Firms To Watch: Appellate: courts of appeals / Appellate: supreme courts (states and federal)

Appellate: courts of appeals / Appellate: supreme courts (states and federal) in United States

Akin

The Washington DC-based team at Akin handles appellate litigation across federal and state courts, with particular strength in IP, administrative law, and American Indian law. Experienced practice head Pratik Shah has argued in every federal circuit and eighteen cases before the US Supreme Court, including a challenge to state-level restrictions on gender-affirming medical treatments for minors. Alongside James Tysse, he recently secured a rare grant of certiorari before judgment to challenge federal trade tariffs on behalf of family-owned businesses. Tysse also specializes in administrative law and regulatory challenges for commercial and trade-related clients. Julius Chen is another key name, focusing on appellate matters involving financial restructuring and constitutional law.

Responsables de la pratique:

Pratik Shah


Autres avocats clés:

James Tysse; Julius Chen


Principaux clients

Learning Resources, Inc.


Horseracing Integrity and Safety Authority


AT&T Corporation


U.S. Chamber of Commerce


Veterans Guardian VA Claims Consulting, LLC


Space Exploration Technologies Corp. (SpaceX)


Nottawaseppi Huron Band of Potawatomi Indians


Eastman Kodak Company


MCR Oil Tools, LLC


Embarq, LLC


D.C. Office of Disciplinary Counsel


Sempra Infrastructure Partners


Univar Solutions USA, Inc.


Elliott Management Corporation


The Bert Bell/Pete Rozelle NFL Player Retirement Plan


Vistra Corporation and Dynegy Marketing and Trade LLC


Armistice Capital


ACLU of Tennessee


Principaux dossiers


  • Represented Learning Resources and hand2mind in a historic US Supreme Court challenge to executive tariffs, securing a rare grant of certiorari before judgment. The case addresses the constitutional limits of presidential authority to unilaterally impose trade duties under the International Emergency Economic Powers Act.
  • Represented the Horseracing Integrity and Safety Authority in defending the constitutionality of its regulatory framework across multiple circuits, securing favorable rulings from the Sixth and Eighth Circuits that upheld the Authority’s rulemaking and enforcement structure under FTC oversight.
  • Represented AT&T in a Fifth Circuit victory vacating a $57m FCC forfeiture order, with the court ruling that the agency’s in-house adjudication of civil penalties violates the Seventh Amendment right to a jury trial.

Arnold & Porter

The Washington DC-based team at Arnold & Porter litigates appellate matters across various federal circuits and the US Supreme Court, where the firm maintains an 8-0 record since 2023. Practice head John Elwood led the team that secured a Supreme Court victory ensuring military reservists in federal roles maintain their full pay when called to service. He works alongside Allon Kedem, who handles complex jurisdictional and life sciences disputes, and voting rights specialist Elisabeth Theodore. In May 2025, Merrick Garland rejoined the firm after serving as US Attorney General and Chief Judge of the DC Circuit.

Responsables de la pratique:

John Elwood


Autres avocats clés:

Merrick Garland; Allon Kedem; Elisabeth Theodore


Principaux clients

Global Health Council, the Small Business Association of International Companies and six major government contractors and grantees


Epoch Everlasting Play


Appellant, S.A.A.


99 Afghan nationals


Lundbeck


Nucor Corp.


Robert Kleckley, a Florida state prisoner


Hyundai Motor Company


Stanford University


Eisai


Immigrant Defenders Law Center (“ImmDef”)


Lummus Technology


Bayer and Merck


Pharmaceutical Research & Manufacturers of America (PhRMA)


Mozhgan Asghari, an Iranian national


Nick Feliciano, a Coast Guard reserve officer


Principaux dossiers


  • Represented the National Infusion Center Association and PhRMA in a Fifth Circuit victory that reversed the dismissal of their constitutional challenge to the Inflation Reduction Act’s Drug Price Negotiation Program, establishing that such claims can be brought directly in federal court without first exhausting administrative remedies.
  • Represented federal employees and military reservists in a US Supreme Court victory in Feliciano v. Department of Transportation, which ensured that service members do not suffer a loss in pay when called to active duty.
  • Represented the Palestine Liberation Organization and the Palestinian Authority in a unanimous US Supreme Court victory that reversed a lower court ruling regarding federal jurisdiction under the Promoting Security and Justice for Victims of Terrorism Act.

Baker Botts L.L.P.

Baker Botts L.L.P. maintains a strong presence in the Texas Supreme Court, where the team conducted seven oral arguments during the recent term. The Houston-based group also handles a significant volume of federal appellate work, with co-head Aaron Streett leading the team to two unanimous U.S. Supreme Court victories in 2025, including a Clean Air Act venue challenge and a matter involving foreign sovereign immunity. Fellow co-head Macey Reasoner Stokes is a veteran advocate for energy and oil and gas clients in high-stakes appeals. J. Mark Little, Christopher Tutunjian, and Anthony Lucisano, who is described as ‘wise beyond his years’, are all key contacts at the firm.

Responsables de la pratique:

Macey Reasoner Stokes; Aaron Streett


Autres avocats clés:

J. Mark Little; Anthony Lucisano; Christopher Tutunjian


Les références

‘Our field is an emerging, novel technology creating new constitutional questions and Baker Botts rose to the challenge, crafting a strong legal argument after quickly grasping the complexity of the technology.’

‘We worked with Aaron Streett, who was extremely effective, knowledgeable, and strategically insightful in securing a successful outcome to a finely balanced case.’

‘Baker Botts has great legal talent and an innovative approach to preparing arguments. It has great knowledge of our industry and is always well prepared with excellent communication.’

Principaux clients

Age Verification Providers Association


Alta Power LLC


Ammons Law Firm


AT&T


Avista Corporation


Burlington Resources Oil & Gas Company LP


Business Coalition for Clean Air


Calpine Corporation


Cascade Natural Gas Company


CenterPoint Energy, Inc.


Chevron Corporation


City of Alice


COG Operating, LLC


Computer Sciences Corporation


ConocoPhillips Company


Credit Suisse AG / Credit Suisse Securities (USA) LLC


Devas Multimedia Private Limited


DISH Network


DM Arbor Court, Limited


Dril-Quip, Inc.


Eagle Materials, Inc.


Engie North America, Inc.


Exxon Mobil Corporation


FINRA


GMG Health Systems Associates, P.A.


Groff, Gerald E.


Guadalupe-Blanco River Authority


Halliburton Energy Services, Inc.


Hecate Energy LLC


Hittle, Ronald


Idaho Power Company


ITC Holdings Inc.


ITC Midwest LLC


James Robert Jones & Alan Watson


Janvey, Ralph S. / Official Stanford Investors Committee


JSW Steel (USA) Inc.


Kenneth Hahn


Keurig Dr Pepper


Kevin Burke & Jeffrey Schwartz Burke


Kinder Morgan Petcoke


Kinder Morgan Texas Pipeline LLC


Landry’s, Inc.


Lockheed Martin Corporation


Magnolia Oil & Gas Operating LLC


McDermott International, Ltd.


Montana-Dakota Utilities Co.


MP Gulf of Mexico, LLC


N. Russell Scott and Kathryn G. Mullen


National Associate of Home Builders


National Multifamily Housing Council


Netflix, Inc.


Northwest Natural Gas Company


Oklahoma Gas & Electric Company


Phillips 66


Port Arthur LNG, LLC


Puget Sound Energy, Inc.


Qualcomm


Rainbow Energy Center, LLC


Repsol Oil & Gas, LLC


Ribbon Communications, Inc.


Robert E. Ammons & The Ammons Law Firm


RSM Production Corporation


Sempra Energy


Shell


Sunnova Energy Corporation


Swiftly Systems, Inc.


Tenaris Bay City, Inc.


Texas Chemistry Council


Texas Oil & Gas Association


TRT Holdings, Inc.; Omni Hotels


U.S. Chamber of Commerce


United Employee Benefit Fund


Visionworks of America, Inc.


Vitol Americas Corp.


Werner Enterprises, Inc.


Western Farmers Electric Cooperative


WGL Holdings Inc.


Xcel Energy


Principaux dossiers


  • Represented DM Arbor Court, Limited in a Fifth Circuit victory finding that the City of Houston committed a regulatory taking by denying repair permits for an apartment complex.
  • Represented the Official Liquidator of Devas Multimedia in a unanimous US Supreme Court victory overturning a Ninth Circuit decision and enforcing a $1.3 billion arbitral award against a company owned by the Indian government.
  • Represented several Oklahoma-based energy and manufacturing companies in an 8-0 US Supreme Court victory clarifying Clean Air Act venue rules and confirming the Tenth Circuit as the proper forum for challenges to state implementation plans.

Cravath, Swaine & Moore LLP

The New York-based team at Cravath, Swaine & Moore LLP regularly handles appellate work for matters in which it conducted the trial court litigation, while also being frequently sought out to ‘right the ship’ on high-stakes appeals originally handled by other firms. This dual capability is particularly evident in the IP arena, where the firm is often hired to lead appeals in complex patent infringement, trade secret, and breach of contract disputes. In July 2025, the group secured a major victory in the Ninth Circuit for Epic Games, where a unanimous panel upheld a jury verdict and a nationwide permanent injunction in a significant antitrust dispute. Litigators Wes Earnhardt, Antony Ryan, and Lauren Moskowitz are all key contacts in the practice.

Autres avocats clés:

Wes Earnhardt; Antony Ryan; Lauren Moskowitz


Principaux clients

Abiomed Inc.


Adstra, LLC


Alarm.com Inc.


American Express Company


Crown Castle International Corp.


Dfinity Foundation


Epic Games, Inc.


Eurazeo SE


Ingevity Corporation


Medytox Inc.


Morgan Stanley


Root, Inc.


The Walt Disney Company


Principaux dossiers


  • Secured an appellate victory for Epic Games in the Ninth Circuit, which affirmed a trial win against Google and a three-year nationwide permanent injunction.
  • Secured an appellate victory for Alarm.com affirming a prior trial win in ITC patent infringement litigation concerning demand management functionality for electric operating reserves.
  • Represented Ingevity in a Federal Circuit appeal involving a patent infringement suit against BASF and related antitrust counterclaims concerning emission control systems for fuel canisters.

Dechert

The team of ‘polished litigators’ at Dechert maintains a broad appellate footprint with a presence across all 13 federal circuits, frequently handling disputes involving administrative law, securities, and bankruptcy. Practice co-head Michael McGinley, who splits his time between Philadelphia and Washington DC, argued three cases before the U.S. Supreme Court within a four-month period in early 2025. Co-head Steven Engel, based in Washington DC, focuses on agency regulations and constitutional challenges, often advising on government and congressional investigations. Another key member is Eric Brunstad Jr, based in New Haven, who brings invaluable experience having argued 11 cases before the U.S. Supreme Court.

Responsables de la pratique:

Steven Engel; Michael McGinley


Autres avocats clés:

Eric Brunstad Jr


Les références

‘Dechert has extremely knowledgeable and polished litigators with excellent communication skills and attention to the client. The team is always responsive and available in a timely manner to review and explain the next steps.’

‘Eric Brunstad Jr is very experienced in appellate jurisdiction and has argued many cases at the US Supreme Court and various Court of Appeals levels. He has an experienced and efficient team.’

‘Eric Brunstad Jr is a brilliant lawyer who is personable and able to communicate with clients and judges in a clear, articulate fashion.’

Principaux clients

BLOM Bank S.a.L.


Zillow Group, Inc.


St. Isidore of Seville Catholic Virtual School


Ad Hoc Group of PREPA Bondholders


MOL Hungarian Oil and Gas PLC


Fox Corporation


Citadel Equity Fund Ltd.


Saint-Gobain Performance Plastics Corporation


Erie Indemnity Co.


Transform Holdco LLC


Humana, Inc.


Cammeby’s Realty Corp.


Police Benevolent Association of the City of New York (the “PBA”)


Occidental Chemical Corp.


Principaux dossiers


  • Represented BLOM Bank in a unanimous Supreme Court victory affirming that plaintiffs are prohibited from refiling a lawsuit seeking to hold the bank liable for aiding and abetting.

Gibson, Dunn & Crutcher LLP

Gibson, Dunn & Crutcher LLP maintains a preeminent presence before the US Supreme Court, where it demonstrated exceptional activity over the past year by presenting five oral arguments. The firm’s national reach is anchored by a trio of practice chairs: Thomas Dupree Jr. in Washington DC, Allyson Ho in Dallas, and Julian W. Poon in Los Angeles. Dupree Jr. specializes in unraveling complex federal regulations and commonly represents the entire rail industry, as he regularly appears for the Association of American Railroads. In Dallas, Ho oversees the firm’s significant presence in the Fifth Circuit and recently appeared before the US Supreme Court in December 2025 to address a significant circuit split regarding First Amendment claims. Poon leads the California-based appellate efforts and is a specialist in neutralizing high-exposure trial outcomes, recently evidenced by a challenge to a $243m judgment against Tesla involving its autopilot features. The wider team includes Los Angeles-based veteran strategist Theodore Boutrous, who recently led the appellate defense for Nestlé in a complex supply chain matter. In Washington DC, the group is further bolstered by Thomas G. Hungar, who secured a unanimous US Supreme Court victory reinforcing corporate separateness in trademark disputes, and Miguel A. Estrada, who recently prevailed in the DC Circuit by defeating a state-owned energy company’s sovereign immunity claim in a high-stakes international expropriation dispute. Notably, the US Supreme Court afforded Dallas associate Stephen Hammer the rare honor of a direct appointment to argue an immigration case.

Responsables de la pratique:

Thomas Dupree Jr.; Allyson Ho; Julian W. Poon


Autres avocats clés:

Theodore Boutrous; Miguel A. Estrada; Thomas G. Hungar; Brad Hubbard; Stephen Hammer


Principaux clients

Allstate


Association of American Railroads


Balfour Beatty


DraftKings, Inc.


FINRA


Florida East Coast Railway


Health Management Systems


Helmerich & Payne International Drilling Co. (H&P)


Hillsdale College


Kaiser Permanente


Luminant Generation Company LLC


Media Matters for America


National Football League (NFL)


NCTA – The Internet & Television Association


Nestlé USA Inc.


Office of the Governor of Texas


PwC


Rust-Oleum


Sempra Energy


Slack Technologies


Tesla, Inc.


Union Pacific Railroad Co.


Webcor Construction, L.P.


AIG


AT&T


Bayer


Berkshire Hathaway


Chevron Corporation


Chief Justice of California


Churchill Downs


Columbia Capital Equity Partners IV


Court-appointed amicus


Deep South Today d/b/a Mississippi Today


Dewberry Capital Corporation


Gabriel Olivier


John W. Mabee


Mike and Tara Cabral


Shipt, Inc.


Southern Methodist University


Texas Business Law Foundation


Principaux dossiers


  • Secured a groundbreaking Eighth Circuit decision for NCTA – The Internet & Television Association, vacating the FTC’s “Click-to-Cancel” Rule. The ruling preserved the recurring subscription model for American businesses.
  • Obtained a unanimous Supreme Court victory for Dewberry Group in a pivotal Lanham Act case.
  • Obtained a unanimous Supreme Court victory for Devas shareholders, preserving federal jurisdiction over foreign states in arbitration disputes. The ruling confirmed that personal jurisdiction under the FSIA exists whenever an immunity exception applies and service is proper, without requiring a separate « minimum contacts » analysis.

Haynes and Boone, L.L.P.

Haynes and Boone, L.L.P. is noted for its ability to litigate at the highest level of the judiciary, frequently squaring off against top-tier national firms in complex bankruptcy, securities, and copyright appeals. Practice co-head Daniel Geyser, who operates from Dallas and Denver, has argued 17 cases before the U.S. Supreme Court, which puts him among the top ten lawyers in private practice for total arguments. Geyser, who is also lauded for being ‘wonderful to work with’, recently secured a significant Supreme Court victory for the Suquamish Tribe, defeating a petition for certiorari to preserve a landmark ruling on tribal jurisdiction and sovereignty. Based in Dallas, fellow practice head Ben Mesches leads on significant Texas-based disputes, including the ongoing challenge to a $800m wrongful verdict stemming from a crane collapse.

Responsables de la pratique:

Daniel Geyser; Ben Mesches


Les références

‘Haynes and Boone provides excellent legal services.’

‘Daniel Geyser is the best.’

‘Daniel Geyser, the chair of the firm’s U.S. Supreme Court practice, is wonderful to work with. He allows co-counsel to be as active as they would like in the work leading up to the Supreme Court argument. He made it a fun and memorable experience for us.’

Principaux clients

Archer and White Sales, Inc. / McKool Smith, P.C.


Alfred H. Siegel, Trustee of the Circuit City Stores, Inc. Liquidating Trust


Suquamish Tribe


Edwards Lifesciences Corporation


Curo Health Services, Inc.


Grande Communications Networks, LLC/Astound Broadband


4DD Holdings, LLC and T4 Data Group, LLC


Principaux dossiers


  • Represented 4DD Holdings, LLC and T4 Data Group, LLC in a $1 billion Federal Circuit appeal challenging the government’s unauthorized copying of private software.
  • Represented the liquidating trustee of Circuit City Stores in securing a Supreme Court ruling that struck down an Act of Congress under the Bankruptcy Clause.
  • Defended the Suquamish Tribe in a tribal law dispute by successfully opposing a Supreme Court review of a jurisdictional ruling, thereby protecting the rights of tribal courts.

Jones Day

Jones Day‘s issues and appeals practice is lauded for its ‘amazing depth, talent, and practicality’, maintaining a formidable bench that includes over 45 former US Supreme Court clerks. The firm is a powerhouse in the US Supreme Court, frequently representing major corporations in high-stakes regulatory and multi-billion-dollar liability disputes. New York-based practice head Traci Lovitt is a ‘best-in-class’ advocate who regularly leads strategy on complex trial-level motions and appeals for major energy and financial clients. Former US Solicitor General Noel Francisco, based in Washington DC, recently secured a unanimous US Supreme Court victory for a major firearms manufacturer and is currently leading the high-profile appeal for a former US Senator regarding federal bribery charges. In Detroit, Amanda Rice is an accomplished oral advocate who recently represented an incarcerated litigant in a successful US Supreme Court challenge regarding notice of appeal standards. Washington DC partner Ryan Watson secured a significant US Supreme Court victory for tobacco retailers, clarifying their right to challenge agency marketing denial orders. The Detroit team was strengthened by the January 2026 partner promotion of David Suska, while the Washington DC team saw several departures to the US Department of Justice in early 2025, with the loss of Yaakov Roth, Hashim Mooppan, and Brett Shumate.

Responsables de la pratique:

Traci Lovitt


Autres avocats clés:

Noel Francisco; Amanda Rice; Ryan Watson; David Suska


Les références

‘The team offers amazing depth, talent, and practicality, and has a best-in-class practice with Traci Lovitt. I trust them on my most high-profile matters.’


Principaux clients

Antero Resources Corporation


Bestwall LLC and TikTok Inc.


ByteDance


Citadel Securities LLC


General Electric


Google LLC


Kaiser Gypsum and Hanson Permanente


KalshiEX LLC


Hilton Worldwide Holdings Inc.


Qualcomm Incorporated


R.J. Reynolds


Sanchez Energy Corporation Ad Hoc Group of Senior Secured Noteholders and DIP Lenders


Senator Bob Menendez


Union Oil Company of California


United Airlines


University of Michigan


Daikin Industries, Ltd.


Donte Parrish


Eli Lilly and Company


Flowers Foods


Guardian Flight LLC


Huntington National Bank


National Republican Senatorial Committee


PG Sittenfeld


R.J. Reynolds Vapor Company


Roman Catholic Diocese of Albany


Sherwin-Williams Company, The


Smith & Wesson


Principaux dossiers


  • Persuaded the Eleventh Circuit to invalidate an order issued by the Securities and Exchange Commission for Citadel Securities LLC.
  • Secured a unanimous Supreme Court victory for Smith & Wesson, reversing a First Circuit decision. The ruling blocked the Mexican government from pursuing a lawsuit against the American firearms industry for allegedly aiding and abetting cartel violence.
  • Secured a United States Supreme Court victory for retailers and R.J. Reynolds Vapor Company in a case concerning the ability of retailers to challenge FDA marketing denial orders for tobacco products.

King & Spalding

King & Spalding litigates high-stakes appeals before various federal circuits and the US Supreme Court. While its primary hub is Washington DC, the firm maintains a significant California presence and a prominent Florida team that has won more than 30 appellate cases in the state over the past decade. Jeffrey Bucholtz  co-leads the practice and is recognized for his life sciences expertise, recently representing Zyla Life Sciences in a successful Fifth Circuit reversal. He shares leadership with administrative law expert Ashley Parrish , who is steering multi-circuit challenges to federal drug pricing regulations. Key regional contacts include Kelly Perigoe in Los Angeles and Miami-based Val Leppert . Matthew McGill joined in July 2025 from Gibson, Dunn & Crutcher LLP, having recently argued Supreme Court merits cases concerning procedural finality in arbitration and foreign sovereign immunity.

Responsables de la pratique:

Jeffrey Bucholtz; Ashley Parrish


Autres avocats clés:

Paul Mezzina; Matthew McGill; Kelly Perigoe; Amy Upshaw; Val Leppert


Les références

‘Ashley Parrish provides a combination of client service and engagement with ideas that shape and drive exceptional advocacy.’

Principaux clients

Novo Nordisk


American Clinical Laboratory Association


AbbVie


Chamber of Commerce of the United States


Progressive Insurance


Boehringer Ingelheim


Silicon Ranch Corporation


R.J. Reynolds


NSO Group Technologies Limited


Terumo


Principaux dossiers


  • Represented Novo Nordisk and Boehringer Ingelheim in ongoing constitutional challenges across the Second and Third Circuits against the Inflation Reduction Act’s drug price control provisions.
  • Represented Progressive Insurance in a series of appeals across the country, successfully defeating class certification and reversing district court orders that had certified nationwide class actions.
  • Represented Boehringer Ingelheim in a Delaware Supreme Court victory reversing a lower court decision that would have allowed expert testimony from nearly 75,000 plaintiffs alleging the heartburn medication Zantac caused cancer. The court’s July 2025 ruling reaffirmed rigorous gatekeeping standards for expert evidence in mass tort litigation.

Kirkland & Ellis LLP

The team at Kirkland & Ellis LLP boasts extensive experience briefing and arguing in the federal courts of appeals, state appellate courts, and the Supreme Court of the United States. Team members draw on experience gained in US Supreme Court and Court of Appeals clerkships, and has subject area expertise spanning antitrust, bankruptcy, copyright, criminal, education, and ERISA amongst others. John O’Quinn, based in Washington DC, is active across intellectual property disputes and commercial litigation, and leverages experience in the US Department of Justice as Deputy Associate Attorney General when supporting clients. Working across DC and Dallas, George Hicks is recognized for his Supreme Court work, and Jason Wilcox, in DC, is another key name in the IP space. Jay Lefkowitz, in New York, regularly works with high-profile clients in sensitive matters.

Autres avocats clés:

John O’Quinn; George Hicks; Jason Wilcox; Jay Lefkowitz; Kasdin Mitchell


Principaux clients

American Jereh International Corporation


Association for Accessible Medicines


The Boeing Company


BP Exploration & Production Incorporated;


BP America Production Company


Brilliant National Services, Inc.


Caterpillar, Inc.


Comet Technologies USA Inc.


General Motors


Gilead Sciences, Inc.


Hecla Mining Company


iRobot Corporation


Johnson & Johnson


Consumer Inc. and Kenvue, Inc.


Lenovo Inc. et al.


Motorola Solutions, Inc.


Omnitracs, LLC


Samsung Electronics Co. Ltd.


Sun Pharmaceuticals and Ranbaxy Pharmaceuticals


Teva Pharmaceuticals North America


Principaux dossiers


Latham & Watkins

Latham & Watkins maintains a top-tier appellate practice distinguished by its ‘analytical depth, strategic discipline, and seamless integration with trial teams’. The group regularly secures pivotal victories across the fields of administrative law, religious freedom, tax law, and disability rights. Based in Washington DC, practice head Roman Martinez recently secured a unanimous US Supreme Court victory regarding disability rights and was appointed by the Court to argue as amicus curiae in a high-profile First Amendment election law challenge. Gregory Garre is a veteran advocate who recently argued his 50th case before the US Supreme Court, securing a landmark First Amendment victory that affirmed the constitutionality of nonsectarian requirements for public charter schools. Melissa Arbus Sherry is noted for her ability to ‘distill complex statutory questions into simple, persuasive argument’ and recently secured a significant Ninth Circuit victory in a first-of-its-kind algorithmic pricing case involving the hospitality industry. Splitting his time between New York and London, Samir Deger-Sen handles significant immigration and jurisdiction matters, recently challenging the lack of judicial review for visa revocations before the US Supreme Court. Washington DC-based Michael Bern is praised for his ‘intellectual rigor’ and ‘precision in written advocacy’ across high-stakes constitutional, administrative, and trade secrets disputes.

Responsables de la pratique:

Roman Martinez


Autres avocats clés:

Gregory Garre; Melissa Arbus Sherry; Samir Deger-Sen; Michael Bern


Les références

‘The team’s strengths are very quickly grasping the key strategic choices in framing an appeal and deeply understanding how best to present arguments to the Supreme Court.’

‘Melissa Arbus Sherry stands out for her ability to distill complex statutory questions into simple, persuasive arguments for oral argument purposes.’

‘The firm is valued for its ability to swiftly mobilize specialized experts and deliver decisive, actionable answers that empower commercial teams to make confident strategic decisions.’

Principaux clients

Gentner Drummond


Ava Tharpe


The Methodist Hospitals


Amina Bouarfa


NASCAR


Netflix


Cendyn


Andreessen Horowitz (a16z)


Thomas Keathley


Eargo


L.A Terminals


Urgent.ly (Otonomo)


AIG Financial Products


Home Depot, Inc.


Telefónica


Edwards Lifesciences


Principaux dossiers


  • Represented Oklahoma State Attorney General Gentner Drummond in a US Supreme Court victory in Oklahoma Statewide Charter School Board v. Drummond, which barred the creation of the nation’s first religious charter school.
  • Represented a student in securing a unanimous US Supreme Court victory regarding the denial of reasonable accommodations under the Americans with Disabilities Act and Rehabilitation Act.
  • Secured a landmark appellate victory in the Ninth Circuit for Cendyn. The matter represented the first appellate decision in a recent surge of algorithmic pricing litigation aimed at the real estate, hospitality, and healthcare industries.

Lehotsky Keller Cohn LLP

Lehotsky Keller Cohn LLP is a litigation boutique that handles constitutional disputes and regulatory appeals against government bodies. The firm offers ‘Supreme Court–level advocacy with the efficiency and focus of a boutique’ for technology and energy sector clients. Practice head Scott Keller works across Washington DC and Austin, and has achieved the rare feat of arguing ten or more cases before both the US and Texas Supreme Courts. In Washington DC, Steve Lehotsky and ‘seasoned appellate and complex litigation strategist’ Jonathan Cohn manage administrative challenges, including a recent win for Harvard University involving a $2.2bn funding freeze. Based in Oklahoma City, Mithun Mansinghani recently led a rare 8-0 US Supreme Court victory regarding Clean Air Act implementation. Mary Elizabeth Miller joined in March 2025 from Kirkland & Ellis LLP, while Kyle Hawkins departed in October 2025.

Responsables de la pratique:

Scott Keller


Autres avocats clés:

Steve Lehotsky; Jonathan Cohn; Mithun Mansinghani; Shannon Denmark


Les références

‘Lehotsky Keller Cohn has built a truly national appellate practice that combines Supreme Court–level advocacy with the efficiency and focus of a boutique, delivering results across federal and state appellate courts. What most distinguishes the firm is its outcomes. The boutique model confers meaningful advantages; lawyers all have high-end clerkship pedigrees, yet matters are staffed leanly with senior ownership to avoid the inefficiencies of pyramid staffing while maintaining premium quality.’

‘Jonathan Cohn is a seasoned appellate and complex litigation strategist who is a frequent choice for appellate issues. He is a full-service litigator who can drive strategy from beginning to end.’

‘Shannon Denmark brings formidable appellate experience and judgment to the team.’

Principaux clients

American Gas Association, American Public Gas Association, National Propane Gas Association


Bayer Healthcare LLC


Harvard College


Joseph Miller, Ezra Wengerd, Jonas Smucker, Shady Lane School, Dygert Road School, and Pleasant View School a/k/a Twin Mountain School


JSX and XO


MPLD Husky LLC (Amazon)


National Mining Association


National Rural Electric Cooperative Association


NetChoice, LLC; Computer and Communications Industry Association


Pfizer, Inc.


State Farm Fire & Casualty Co.


State of Mississippi and Mississippi Department of Environmental Quality


State of Oklahoma and Oklahoma Department of Environmental Quality


Texas Supreme Court Justice John Devine


The Mabee Ranch Royalty Partnership, L.P.; 315 MR, Inc.; and 93 JM, Inc.


United States Aircraft Insurance Group (USAIG)


US Chamber of Commerce


Principaux dossiers


  • Won summary judgment for Harvard University in a challenge to the federal government’s $2.2bn funding freeze, with the court vacating the order as an arbitrary and capricious violation of the First Amendment and Title VI.
  • Represented NetChoice LLC and CCIA in a 6-3 US Supreme Court victory recognizing that social media websites have First Amendment rights to engage in content moderation and refuse to disseminate speech.
  • Represented the Attorneys General for the States of Oklahoma and Utah in a unanimous US Supreme Court victory clarifying that the Tenth Circuit is the proper venue for challenges to the EPA’s disapproval of state implementation plans under the Clean Air Act.

Mayer Brown

Mayer Brown handles diverse appellate litigation across federal and state courts, with a notable focus on regulatory and administrative challenges. The firm recently appeared as lead counsel in US Supreme Court proceedings concerning ERISA pleading standards and Medicaid statute enforcement. Leadership is shared by a trio of practice heads: Washington DC-based Nicole Saharsky and Andrew Pincus, and Michael Scodro in Chicago. Regarded for her ‘sophisticated strategic thinking,’ Saharsky has argued 32 cases before the US Supreme Court across subjects including antitrust, environmental law, and IP. While Pincus recently led a constitutional challenge to a presidential order blocking a $14.9bn merger, Scodro utilizes his background as a former Illinois Solicitor General to lead arguments in state and federal supreme courts.

Responsables de la pratique:

Nicole Saharsky; Michael Scodro; Andrew Pincus


Les références

‘Mayer Brown has provided exceptional pro bono SCOTUS assistance for years, and this year that included briefing and arguing a high-profile and high-stakes case. The work on every aspect was outstanding, and we received the same level of resourcing and attention expected for a paying matter.’

‘Nicole Saharsky is unparalleled in her practical and sophisticated strategic thinking and ability to speak compellingly to members of the Court not disposed to find in our favor. She gave us outstanding representation on a challenging issue.’

‘I appreciate Nicole Saharsky’s sensitivity to our institutional concerns and the respect she showed to each of our attorneys working on the matter. I would recommend Mayer Brown without hesitation.’

Principaux clients

TC Energy Corp.


United States Steel Corporation


Island Industries Inc.


Citibank


Celanese International Corp.


Société Générale


CDK Global, LLC


Baker Tilly US, LLP


Cebridge Acquisition


American College of Obstetricians and Gynecologists, the American Medical Association, and other leading medical societies.


American Trucking Associations


Nationstar Mortgage


Cargill Incorporated


Arkema Inc.


Dorilton


Principaux dossiers


  • Represented TC Energy Corp. in a Delaware Supreme Court victory reversing a $199m judgment related to its $13bn acquisition of Columbia Pipeline Group Inc.
  • Represented United States Steel Corporation as lead counsel in a DC Circuit challenge to the presidential order blocking its $14.9bn merger with Nippon Steel Corporation, resulting in a voluntary dismissal after the parties reached an agreement to allow the transaction to proceed.
  • Represented Société Générale in a Second Circuit victory affirming the dismissal of two Helms-Burton Act suits, a decision providing significant protections to financial institutions against claims related to property confiscated by the Cuban government.

McDermott Will & Schulte

The Washington DC-based appellate practice group at McDermott Will & Schulte is widely recognized for its handling of complex regulatory and constitutional challenges within the life sciences, energy, and government sectors. Practice head Paul Hughes, praised for being ‘one of the most creative appellate litigators of our era,’ has argued ten times before the U.S. Supreme Court. The team is frequently sought out for administrative appeals, including a recent DC Circuit matter that successfully vacated a federal agency order. Within the group, Andrew Lyonsberg focuses on agency litigation involving federal oversight, while Sarah Hogarth handles ERISA and healthcare preemption disputes for life sciences entities. Michael Kimberly left the firm to join McDermott Will & Schulte in May 2025.

Responsables de la pratique:

Paul Hughes


Autres avocats clés:

Andrew Lyonsberg; Sarah Hogarth


Les références

‘Paul Hughes listens carefully, cultivates subject matter expertise to refine his arguments, and leads a talented team of brief writers. Andrew Lyonsberg is particularly notable as an example of the team’s breadth of expertise.’

‘The McDermott team stands out for its insight into Supreme Court strategy and how district court filings must be framed to ultimately succeed. It focuses on long-term victory before the Supreme Court rather than merely winning at the district court level.’

‘Paul Hughes is highly strategic at the courts of appeal, where he carefully considers the appellate bench and circuit precedent when framing arguments. He also provides a unique level of detail in court declarations.’

Principaux clients

Advanced Medical Technology Association


Astellas Pharmaceuticals


Aya Healthcare Services, Inc.


BDO USA, LLP


Cigna Health


The Coca-Cola Company


Electric Power Supply Association Blackboard, Inc.


Genentech, Inc.


Houlihan Lokey


Independent Power Producers of New York


Inland Fresh Seafood Corporation


Medical Imaging & Technology Alliance


NRG Power Marketing LLC


National Association of Manufacturers


NCR Voyix


PJM Power Providers


Tenaska Power Services Co.


Terminix


U.S. Chamber of Commerce


Vanda Pharmaceuticals Inc.


Walmart


World Shipping Council


Zocdoc, Inc.


Principaux dossiers


  • Represented a transgender woman in a Fifth Circuit victory following a Supreme Court remand, overturning jurisdictional barriers under the Immigration and Nationality Act and establishing limitations on the BIA’s fact-finding capacity.
  • Advised Vanda Pharmaceuticals in a D.C. Circuit appeal challenging the FDA’s denial of a drug application for jet-lag disorder, securing a reversal and a remand for a full evidentiary hearing.
  • Represented the Independent Power Producers of New York as an intervenor in a D.C. Circuit victory defending FERC’s approval of revised tariffs under state fossil-fuel phaseout legislation.

MoloLamken LLP

Appellate boutique MoloLamken LLP handles high-stakes cases across the regional federal circuits and the US Court of Appeals for the Federal Circuit. The firm’s ‘excellent lawyers’ manage a caseload encompassing IP, energy, telecoms, and administrative law from offices in Washington DC, New York, and Chicago. Based in Washington DC, practice head Jeffrey Lamken has argued 29 cases before the US Supreme Court and is widely recognized for his leadership in patent appeals. Lamken recently led the team in securing a significant Federal Circuit affirmance in a multi-party vaccine patent appeal and successfully overturned a nine-figure infringement verdict in the mobile communications sector. Fellow Washington DC contact Michael Pattillo focuses on administrative law and regulatory challenges, where he has successfully challenged federal agency enforcement actions and overturned substantial financial penalties. Also in Washington DC, Rayiner Hashem has extensively represented Ericsson in high-stakes patent appeals, including proceedings involving cross-border anti-suit injunctions. In Chicago, Eugene Sokoloff provides expertise in high-stakes antitrust litigation, representing companies in Sherman Act claims on appeal.

Responsables de la pratique:

Jeffrey Lamken


Autres avocats clés:

Lucas Walker; Michael Pattillo; Rayiner Hashem; Eugene Sokoloff


 


Les références

‘Very professional and experienced handling of cases.’

‘Jeffrey Lamken has extensive experience and knowledge regarding the workings of the U.S. Supreme Court, and Lucas Walker digs to the bottom of the case.’

‘Excellent lawyers that professionally guide clients through the case.’

Principaux clients

The Regents of the University of California, the University of Vienna, and Emmanuelle Charpentier (“CVC”)


Moderna, Inc.


CH Lighting Technology Co., Ltd.


Elliott Electric Supply, Inc.


Shaoxing Ruising Lighting Co., Ltd.


Zaappaaz, Inc.


HUB International Limited and HUB International Midwest Limited


Amgen Inc.


Express Mobile, Inc.


Natera, Inc.


Bank Markazi


Shradha Agarwal


Nokia Corp.


Versata Software, Inc.


Versata Development Group, Inc.


Trilogy, Inc.


VLSI Technology LLC


Ninth Inning Inc. (d/b/a The Mucky Duck, 1465 3rd Ave.; d/b/a Gael Pub)


Robert Gary Lippincott, Jr.


Jonathan Frantz (on behalf of themselves and classes of residential and commercial subscribers to DirecTV’s “NFL Sunday Ticket” package)


Netlist


Mark A. Gyetvay


Principaux dossiers


  • Obtained a reversal on behalf of Nobel Prize-winning scientists Jennifer Doudna and Emmanuelle Charpentier regarding an adverse PTAB decision. The ruling concerned patent ownership of the CRISPR-Cas9 gene editing system.
  • Represented Nokia in obtaining a Federal Circuit reversal of an $181m patent infringement verdict. The decision vacated the damages award after the court found a lack of substantial evidence to support the jury’s finding of infringement.
  • Represented Moderna in obtaining an appellate affirmance of a judgment that the Spikevax Covid-19 vaccine does not infringe a competitor’s patents.

Morgan, Lewis & Bockius LLP

Morgan, Lewis & Bockius LLP handles a vast range of appeals across numerous federal and state jurisdictions, with a focus on administrative and constitutional law. The team is regularly brought in post-verdict to handle high-value appeals in the energy and tax sectors, including matters involving nuclear projects and regulatory challenges. Splitting his time between Washington DC and Hartford, co-leader Bryan Killian maintains a national practice centered on environmental law and climate change disputes across the federal circuits. Fellow co-chair Michael Kenneally, based in Washington DC, specializes in class action defense and appellate issues arising from securities and employment litigation. William Peterson left the firm to become the Solicitor General of Texas in July 2025.

Responsables de la pratique:

Bryan Killian; Michael Kenneally


Morrison Foerster

Morrison Foerster is recognized for its appellate presence, particularly in handling IP disputes within the Federal and Ninth Circuits. The firm is frequently instructed by life sciences and technology companies to manage patent reversals and non-infringement affirmations. Leadership is shared by a trio of practice heads: Washington DC-based Deanne Maynard and Brian Matsui, and Joseph Palmore, who splits his time between Washington DC and New York. While Maynard has argued 14 cases before the US Supreme Court and Matsui specializes in patent appeals before the Federal Circuit, Palmore represents clients in securities class actions and commercial disputes. San Francisco-based Aileen McGrath handles complex litigation before California state appellate courts and is set to argue a significant employment case before the California Supreme Court on behalf of Home Depot.

Responsables de la pratique:

Deanne Maynard; Joseph Palmore; Brian Matsui


Autres avocats clés:

Aileen McGrath; Seth Lloyd


Les références

‘The appellate team is top-notch, smart, thoughtful, and articulate.’

‘Aileen McGrath and Joseph Palmore are smart, talented, and excellent on their feet in oral arguments.’

Principaux clients

C. R. Bard, Inc.


Celanese International Corporation


Cloudera


F5, Inc.


McKesson Corporation


Nikon Americas, Inc.


Novartis, Inc.


Pillar Biosciences


Teradata, US Inc.


UPS


Walmart


Kaiser Foundation Health Plan, Inc.


Munger, Tolles & Olson

The ‘excellent’ team at Munger, Tolles & Olson is a prominent choice for high-value appeals and intricate constitutional questions, managing a diverse docket that spans bankruptcy, torts, and criminal justice alongside its core commercial advocacy. The appellate practice is spearheaded by a trio of former Assistants to the US Solicitor General, consisting of Washington DC-based Elaine Goldenberg and Ginger Anders, alongside Benjamin Horwich in San Francisco. Goldenberg, who has argued 12 cases before the US Supreme Court, recently co-led with Donald Verrilli to convince the Eighth Circuit to overturn a $1bn judgment against BMO Harris Bank. Verrilli is a veteran of the appellate bar who is described as a ‘true game-changer’ and recently led the successful challenge to an Executive Order issued against Susman Godfrey. Fellow lead Anders has 19 US Supreme Court arguments to her credit and recently defended a $4bn global settlement in principle before the Hawaiian Supreme Court following significant wildfire litigation. Horwich focuses on competition law and federal pre-emption, while Los Angeles-based Jeffrey Wu is ‘terrific with appellate work’ and provides counsel on novel constitutional issues.

Responsables de la pratique:

Elaine Goldenberg; Ginger Anders; Benjamin Horwich


Autres avocats clés:

Donald Verrilli; Rachel Miller-Ziegler; Jeffrey Wu


Les références

‘To a person, every Munger, Tolles & Olson lawyer I work with is excellent. They all work extremely hard, are very smart, and are easy to deal with. The firm’s hiring standards must be very high, because it is not common to work with a firm where every lawyer has a consistently high level of effort and skill.’

‘Jeffrey Wu is terrific with appellate work and litigation in general. He has advised on cutting-edge constitutional law cases, and his masterful writing and skillful advice are large reasons for successful outcomes.’

‘These are the big guns. Donald Verrilli and his team, in particular Elaine Goldenberg, are true game-changers when they join a matter.’

Principaux clients

Google LLC and/or Alphabet


Lyft, Inc.


BNSF Railway Company


Mara Holdings


BMO Harris


Pacific Gas & Electric


CVS


All Wrapped Up Signs and Graphics LLC


Steves and Sons


AT&T


Public Company Accounting Oversight Board


Southern California Edison


San Diego Gas & Electric


National Endowment for Democracy


Hawaiian Electric Industries


Snap


Netflix


Outside Directors of Skechers


General Dynamics


Principaux dossiers


  • Represented Susman Godfrey in a challenge to an Executive Order that penalized the firm for its past advocacy. The litigation addresses the Executive Branch’s revocation of security clearances, restrictions on federal building access, and directives to terminate federal contracts with the firm and its clients.
  • Represented Google as lead appellate counsel in antitrust litigation brought by the U.S. Department of Justice and 49 states concerning Google’s search engine.
  • Represented Hawaiian Electric Industries and its subsidiaries as lead counsel regarding the August 2023 Maui wildfires. Within one year, the firm negotiated a $4bn multi-party global settlement in principle, with Hawaiian Electric paying less than half of the total amount.

O'Melveny

The appellate group at O'Melveny handles merits briefing, oral advocacy, and amicus curiae strategy across every federal circuit and numerous state courts of last resort. The practice is led from Washington DC by Jonathan Hacker, who has appeared before the US Supreme Court multiple times and recently secured a Sixth Circuit reversal for Admiral Insurance Company on a jurisdictional issue regarding PFAS-related claims. New York-based partner Anton Metlitsky is a ‘thoughtful’ and ‘absolutely top-notch’ litigator who recently represented JPMorgan Chase in a Second Circuit victory concerning document control involving foreign subsidiaries. Metlitsky also scored a major Fourth Circuit victory on behalf of Edwin Brown, securing his eligibility for release from prison. Meaghan VerGow is a highly regarded Washington DC practitioner with an emphasis on health care, ERISA, and insurance-related class actions. Jeffrey Fisher departed the firm in February 2026 to join Hecker Fink LLP.

Responsables de la pratique:

Jonathan Hacker


Autres avocats clés:

Anton Metlitsky; Meaghan VerGow


Les références

‘Anton Metlitsky is an absolutely top-notch appellate litigator; he is thoughtful, practical on the approach, and smart on the risks and benefits. I trust him.’

Principaux clients

JP Morgan Chase & Co.


Admiral Insurance Company


Principaux dossiers


  • Represented Admiral Insurance in a landmark victory before the Third Circuit, securing a precedent-setting ruling on a significant jurisdictional issue that had previously divided federal appellate courts nationwide.
     
     
  • Represented JP Morgan Chase & Co. in a June 2025 appellate victory involving cross-border discovery, where the court limited a foreign litigant’s ability to subpoena a US-based parent company for documents held by its foreign subsidiary.
  • Represented Edwin Leo Brown in a landmark Fourth Circuit pro bono victory, securing the reversal of a district court’s denial of his motion to vacate his sentence. The May 2025 decision found that Brown received ineffective assistance of counsel after rejecting a favorable plea deal based on erroneous legal advice regarding his sentencing exposure.

Orrick, Herrington & Sutcliffe

Orrick, Herrington & Sutcliffe’s appellate group is among the largest in the country, focusing on high-stakes tech and energy litigation. The firm handles a significant volume of IP disputes, with New York-based practice head Joshua Rosenkranz leading the appeal of an $800m trade secrets verdict for Phillips 66. Rosenkranz is also representing Cox Communications in a $1bn copyright battle before the US Supreme Court that carries generational implications for internet provider liability. In Washington DC, Mel Bostwick specializes in patent and veterans appeals, notably representing Netflix in a high-profile patent fight against Broadcom and acting for Micron in a $445m patent dispute. Bostwick is also representing veterans before the US Supreme Court in a challenge to government standards for denying benefits. Robert Loeb is trusted by tech, energy, and life sciences clients with multi-billion dollar regulatory and product liability appeals across both federal and state courts. Eric Shumsky represented a coalition including Google and Meta in a victory linked to the Buffalo supermarket shooting. Also in Washington DC, Abigail Colella and Jeremy Peterman are both adept at translating complex technological and administrative law concepts in IP appeals. The New York team was strengthened in July 2025 by the arrival of Anisha Dasgupta, former General Counsel of the Federal Trade Commission.

Responsables de la pratique:

Joshua Rosenkranz


Autres avocats clés:

Eric Shumsky; Robert Loeb; Mel Bostwick; Robbie Manhas; Jeremy Peterman; Abigail Colella; Anisha Dasgupta


Principaux clients

American Express


American Bankers Association


Avon Products


Basin Electric


Cox Communications


Credit Suisse


DISH Network


Gilead Sciences


Guardant


Intuitive Surgical


Harley-Davidson


Johnson & Johnson


L’Oréal


Micron Technology Inc.


Microsoft


Netflix


NextDecade Corporation


Oracle


Pegasystems


Phillips 66


Plexxikon


PwC


Regents of the University of California


The Renco Group, Inc


Smart Apparel


Sonos, Inc.


Synopsys


UBS-affiliate DLJ Mortgage Capital


Union Carbide


Via Transportation


Woodside Energy


Zynga


Paul Hastings LLP

Paul Hastings LLP has established a strong foothold in the Federal Circuit for intellectual property appeals, while also maintaining strength in life sciences and employment law cases. Following a significant influx of partners in late 2024, the practice is now chaired by Ben Snyder, a former Assistant to the Solicitor General of the United States who has argued a number of cases before the Supreme Court of the United States.

Responsables de la pratique:

Ben Snyder


Autres avocats clés:

Kwame Manley; William K. Whitner; Avi Weitzman; Igor Timofeyev; Sean Unger


Principaux clients

General Electric (GE)


Beast Investments LLC


Campbell Burgess


Career Colleges and Schools of Texas


Pacific Gas & Electric (PG&E)


Petróleos de Venezuela, S.A. (PDVSA)


Samsung Electronics Co. Ltd.


Daiichi Sankyo Company, Ltd. and Daiichi Sankyo, Inc.


Principaux dossiers


Paul, Weiss, Rifkind, Wharton & Garrison LLP

The Washington DC-based appellate practice at Paul, Weiss, Rifkind, Wharton & Garrison LLP is distinguished by its management of high-stakes corporate and constitutional disputes of national importance. The group frequently represents large co-defendant groups in major litigation and is led by the ‘phenomenal oral advocate’ Kannon Shanmugam, who has appeared before the US Supreme Court 39 times. Shanmugam, regarded as a ‘fantastic strategist’, recently acted for Meta in a high-profile US Supreme Court securities appeal and achieved a first-of-its-kind Fifth Circuit victory that overturned federal sanctions against an open-source privacy software project. He is supported by ‘standout’ partner Masha Hansford, a former Assistant to the Solicitor General with extensive experience in significant bankruptcy and administrative law appeals. William Marks further strengthens the team’s capabilities in civil and criminal litigation, focusing on antitrust, securities, and class certification, having represented clients in 15 merits cases before the US Supreme Court.

Responsables de la pratique:

Kannon Shanmugam


Autres avocats clés:

Masha Hansford; William Marks


Les références

‘The Paul Weiss appellate team is outstanding, which is exactly what you would expect with Kannon Shanmugam in the lead. Kannon is a world-class appellate lawyer in every possible way; he is an 11 out of 10.’

‘Kannon Shanmugam is top-notch in every possible respect. He is a brilliant writer, phenomenal oral advocate, and fantastic strategist who defines the word « superb. »’

‘Kannon Shanmugam and Masha Hansford are standout partners within the team.’

Principaux clients

Abengoa, S.A. Underwriting Syndicate


Ad Hoc Group of Serta Lenders


AirBnB


Align Technology, Inc.


Atos SE


Avis Budget Group


Audi AG


Carnival Corp.


CNA Financial Corporation


Cypress Technology Co., Ltd


Exxon Mobil Corporation


Google


Meta Platforms, Inc.


The National Football League (NFL)


NextEra Energy, Inc.


Oklahoma Tax Commission


Pfizer Inc.


Revlon


Uber Technologies, Inc


Proskauer Rose LLP

Proskauer Rose LLP manages an expansive appellate docket with a notable geographic reach encompassing the New York and California state courts alongside numerous federal circuits. New York-based Mark Harris co-leads the group and handles a diverse range of disputes involving IP, administrative law, and labor relations. Fellow co-chair John Roberts, operating from Boston, is a distinguished advocate for major sports leagues and financial institutions, while also leading dozens of appeals before the First Circuit concerning the fiscal restructuring of Puerto Rico. The group frequently represents a high-profile roster in the life sciences and asset management sectors across complex bankruptcy, antitrust, and constitutional law appeals.

Responsables de la pratique:

Mark Harris; John Roberts


Principaux clients

IAM National Pension Fund


Financial Oversight and Management Board for Puerto Rico (FOMB)


The Depository Trust & Clearing Corporation


Major League Soccer


Reed Smith LLP and Eletson Holdings


Cerberus Capital Management, L.P.; Blue Owl Liquid Credit Advisors LLC; Ellington CLO Management LLC; Livello Capital Management; Palmer Square Capital Management; and Steele Creek Investment Management


Rex Medical


Toll Brothers, Inc.


Angus Shane Paul Mitchell Trust


Sandoz Inc.


Bloomberg L.P.


Lawyers for Children, The Legal Aid Society, and Legal Aid Bureau of Buffalo, Inc.


Church & Dwight


Principaux dossiers


Quinn Emanuel Urquhart & Sullivan, LLP

The appellate group at Quinn Emanuel Urquhart & Sullivan, LLP operates a nationwide practice with a particular emphasis on patent, constitutional, and high-value commercial litigation. From the Washington DC office, Christopher Michel recently secured a significant Delaware Supreme Court victory that reinstated a $55bn compensation package for Tesla and its directors. Michel works alongside Derek Shaffer, who focuses on commercially significant appeals, including a victory in the Eleventh Circuit regarding a $1bn fraud dispute. Based in Austin, John Bash led the successful effort to have an en banc Sixth Circuit panel vacate class certification for a major automotive manufacturer. The New York team includes Sanford Weisburst, who handles a wide array of patent and procedural appeals, and William Adams, whose expertise extends to bankruptcy-related appellate litigation and products liability.

Responsables de la pratique:

Sanford Weisburst; Derek Shaffer; William Adams; John Bash; Christopher Michel


Les références

‘We were very impressed with the depth and understanding of our appellate issues as compared to the appellate specialist and trial counsel for the opposing party. This was a legal fight to undo a trial judge’s ruling that was fought at a high level by a team of clients and attorneys who are genetically disinclined to lose.’

‘The firm showed a commitment to keep fighting over an arcane, technical issue that landed us in the California Supreme Court using the same skills that we used to defeat the opposing party at the appellate level.’

Principaux clients

General Motors, LLC


Otto Candies, LLC


Vimeo, Inc.


Express Scripts, Inc.


Berkeley Research Group, LLC, Robert J. Duffy, Stephen L. Coulombe and Elliot A. Fuhr


Norwegian Cruise Line Holdings, Ltd.


National Association of Realtors


Attestor Master Value Fund LP, Trinity Investments Limited, Bybrook Capital Master Fund LP, Bybrook Capital Hazelton Master Fund LP, White Hawthorne, LLC, White Hawthorne II, LLC, Bison Bee LLC


Americredit Financial Services, Inc., d/b/a GM Financial


Unification Church International (UCI)


Altara RK Investments Limited, Altara NK Investments Limited, VV NK Ltd., Bahia VV RK Ltd.


Taction Technology, Inc.


Directors of Tesla, Inc. Elon Musk, Robyn Denholm, Antonio Gracias, James Murdoch, Linda Rice, Brad Buss, and Ira Ehrenpreis.


Virginia Public University Rectors James P. Inman, Rachel W. Sheridan, Charles D. Stimson


OpenAI


TRC Operating Company, Inc. and TRC Cypress Group, LLC.


Henri Berger, Jose Beriot, Paul Boudre, Antoine Bouvier, Dolphin Design, SAS, Christian Dupont, MBDA France, SAS, MBDA, Inc., Soitec USA Holding, Inc., Soitec USA, LLC, Soitec, S.A., Thierry Sommelet and Harold Van den Bossche


Hyundai Motor America and Kia America, Inc.


X Corp. (formerly, Twitter, Inc.)


Dfinity USA Research, LLC; Dfinity Stiftung (Dfinity Foundation); Dominic Williams


JD Classics Ltd. (in Administration)


MBK Senior Living LLC, Muir Woods MSL LLC dba Muir Woods Memory Care, and MSL Community Management LLC


Orthofix


Medallia, Inc.


AliveCor


Cisco Systems, Inc.; John Chambers; Fredy Cheung


iRhythm Technologies, Inc.


Principaux dossiers


  • Represented General Motors in a significant en banc Sixth Circuit victory, securing the reversal of class certification in a consumer action involving alleged transmission defects.
  • Represented more than 30 shipping companies, including Otto Candies, in a landmark Eleventh Circuit victory reinstating fraud, RICO, and conspiracy claims against Citigroup. The decision allows the plaintiffs to pursue over $1 billion in damages related to one of the largest frauds in Latin American history.
  • Secured a full Second Circuit victory for Vimeo in a long-running copyright dispute, affirming that the DMCA safe harbor protects service providers from liability for user-uploaded content even when employees have interacted with the videos. The January 2025 ruling rejected the music industry’s attempt to impose proactive monitoring obligations on internet platforms.

Reed Smith LLP

Reed Smith LLP maintains a widespread appellate practice with significant strength in sectors ranging from healthcare and financial services to oil and gas. Based in Los Angeles and Pittsburgh, Kim Watterson chairs the group and is particularly noted for her experience before the Pennsylvania appellate courts on matters involving managed care, class actions, and data privacy. In Houston, Alan York is a key contact with a well-established presence in the Fifth Circuit and Texas state courts. The team is also highly active in the California Supreme Court, where Los Angeles-based Kasey Curtis and San Francisco-based Raymond Cardozo contribute substantial expertise. Beyond these regions, the group frequently handles high-stakes constitutional and jurisdictional appeals in state supreme courts, including Nevada.

Responsables de la pratique:

Kim Watterson


Autres avocats clés:

Alan York; Kasey Curtis; Raymond Cardozo


Principaux dossiers


Ropes & Gray LLP

Ropes & Gray LLP fields a robust appellate team with deep-seated experience in the antitrust, securities, and healthcare sectors. Practice head Douglas Hallward-Driemeier operates from Washington DC and is a seasoned advocate who has argued before every federal circuit and the U.S. Supreme Court. The group is frequently sought out for its handling of complex administrative and constitutional issues, as well as high-stakes bankruptcy and False Claims Act appeals. In New York, Gregg Weiner and Lisa Bebchick are other key contacts who recently spearheaded the successful defense of a securities fraud class action in the Ninth Circuit. The firm also provides counsel to international clients on cross-border jurisdictional matters and sovereign immunity disputes.

Responsables de la pratique:

Douglas Hallward-Driemeier


Autres avocats clés:

Gregg Weiner; Lisa Bebchick


Principaux clients

Apax Partners


Goldman Sachs & Co.


Array Technologies


Deutsche Bank Securities Inc.


Principaux dossiers


  • Represented a syndicate of underwriters in securing a Ninth Circuit victory that affirmed the complete dismissal of a consolidated putative securities fraud class action.
  • Defended an affiliate of Goldman Sachs in three Second Circuit victories, including an award of over $300 million in damages, concerning a dispute over investments in a Central and South American cell phone tower developer.
  • Secured the dismissal of several lawsuits for Apax Partners and other entities related to a former portfolio company’s default on debt valued at over €1 billion, including appellate victories in the Second Circuit and the New York Appellate Division.

Sidley Austin LLP

Sidley Austin LLP maintains a broad national appellate reach, recently clinching victories across every federal appellate circuit and the U.S. Supreme Court. The department is co-headed by Kwaku Akowuah in Washington DC and Tacy Flint in Chicago, who both handle high-stakes commercial and regulatory disputes. Akowuah recently secured a DC Circuit win in a False Claims Act appeal, while Flint led a pro bono team to a unanimous 9-0 Supreme Court victory for combat-wounded veterans. Also in Washington DC, Carter Phillips has argued a record-setting 91 cases before the Supreme Court and continues to lead major litigation, including the current representation of the Kingdom of Spain alongside New York-based Eamon Joyce. Robert Hochman left the firm in May 2025.

Responsables de la pratique:

Kwaku Akowuah; Tacy Flint


Autres avocats clés:

Carter Phillips; Eamon Joyce; Josh Fougere; Jillian Stonecipher


Les références

‘Carter Phillips is one of the top appellate practitioners in the country. He is very conversational with the judges and did an excellent job for us.’

Principaux clients

Kingdom of Spain


Simon A. Soto


Antrix Corp. Ltd.


Seagate Technology LLC


Ecore International


Microsoft


The Barack Obama Foundation


US Cellular


Cantor Fitzgerald


The Royce Funds


Amgen


American Fuel & Petrochemical Manufacturers


Jazz Pharmaceuticals


YPF Sociedad Anonima


Kimberly-Clark Corporation


BlackRock, Inc.


American International Group (AIG)


Cencora


Principaux dossiers


  • Represented CoorsTek in a precedential Federal Circuit victory confirming that a market competitor could not claim a trademark in the color pink to block competition for ceramic hip-implant components.
  • Represented a former Marine and a class of more than 9,000 veterans in a unanimous US Supreme Court victory ruling that veterans with combat-related disabilities are entitled to full retroactive special compensation benefits regardless of application date.
  • Represented a Texas state prisoner in a US Supreme Court appeal challenging a Fifth Circuit ruling that would have required him to file a second or successive habeas petition to contest his state conviction.

Simpson Thacher & Bartlett LLP

Simpson Thacher & Bartlett LLP maintains a versatile appellate practice that frequently represents financial entities and global corporations in significant disputes. Working from New York, Lynn Neuner co-heads the litigation department and recently prevailed in a National Advertising Review Board appeal regarding the substantiation of product claims. Also in New York, fellow co-chair Jonathan Youngwood is an experienced practitioner who has appeared before the majority of federal circuits, including recent matters in the Second and Ninth Circuits. Across the Fifth and Tenth Circuits, the group handles commercial, civil rights, and regulatory appeals, in addition to merger-related litigation for federal banking institutions.

Responsables de la pratique:

Lynn Neuner; Jonathan Youngwood


Principaux clients

Aptive


AXA XL


Banc of California


BOC International


Bayer


Best Buy


Chubb


Deutsche Bank


Federal Insurance Company


Federal Reserve Banks of San Francisco and New York


Hilton


JPMorgan Chase


Pacific Alternative Asset Management Co. and Prisma Capital Partners


Paramount Global


Swiss Re


Travelers


Principaux dossiers


  • Represented BOC International Holdings Limited in a Second Circuit appellate victory affirming the dismissal of a class action regarding crude oil treasure trading.
  • Represented J.P. Morgan Securities, BofA Securities, Wells Fargo Securities, and William Blair & Company in a Ninth Circuit victory affirming the dismissal of a securities class action.
  • Represented the Southern Coalition for Social Justice in securing an appellate victory overturning an unconstitutional North Carolina law criminalizing voting.

Skadden, Arps, Slate, Meagher & Flom LLP

Skadden, Arps, Slate, Meagher & Flom LLP is led from Washington DC by Shay Dvoretzky, who has appeared more than 20 times before the U.S. Supreme Court. The group maintains a comprehensive national reach, having argued before every federal court of appeals and various state appellate courts. The team is frequently engaged for disputes involving complex jurisdictional and statutory questions, particularly within the tax, antitrust, and administrative sectors. Dvoretzky recently represented a group of Holocaust survivors in a U.S. Supreme Court case against the Republic of Hungary concerning the Foreign Sovereign Immunities Act. Parker Rider-Longmaid is another key contact whose experience includes arguing before the Supreme Court and multiple federal circuits, alongside managing nationwide appellate strategy and constitutional pro bono matters.

Responsables de la pratique:

Shay Dvoretzky; Parker Rider-Longmaid


Principaux dossiers


Vinson & Elkins LLP

Vinson & Elkins LLP is noted for its focus on complex energy, environmental, and administrative law appeals. Based in Washington DC, Jeremy Marwell leads the practice and is praised for his aptitude in ‘tough energy litigation appellate issues’, frequently appearing before the DC Circuit. Michael Heidler divides his time between Houston and Austin, handling various state and federal matters as a primary figure in the Texas Supreme Court and the Fifth Circuit. Max Etchemendy rounds out the team in Washington DC, representing clients across a broad spectrum of federal permitting, environmental regulation, and constitutional law matters.

Responsables de la pratique:

Jeremy Marwell


Autres avocats clés:

Michael Heidler; Max Etchemendy


Les références

‘Vinson & Elkins has excellent attorneys who understand our business.’

‘Jeremy Marwell provides great work and good briefs on tough energy litigation appellate issues.’

Principaux clients

Mountain Valley Pipeline, LLC


National Football League


Edison Electric Institute Inc.


Dakota Access, LLC


Enbridge Ingleside Oil Terminal, LLC


Rio Bravo Pipeline Company, LLC


Saguaro Connector Pipeline, LLC


Washington Gas Light Company


TotalEnergies Gas & Power North America Inc.


Rover Pipeline, LLC


Energy Transfer LP


Enbridge, Inc.


ONEOK, Inc.


Weil, Gotshal & Manges LLP

Weil, Gotshal & Manges LLP maintains a broad appellate presence with particular strength in the media, technology, and consumer product sectors. Zack Tripp, who operates across New York and Washington DC, co-chairs the team alongside New York-based Robert Niles-Weed to handle a diverse docket encompassing antitrust, bankruptcy, and the Foreign Sovereign Immunities Act. Tripp focuses on significant e-commerce disputes and appeals involving the Communications Decency Act, while Niles-Weed is frequently engaged for his expertise in securing emergency stays and managing high-stakes distribution litigation. The group’s Washington DC presence is anchored by veteran Mark Perry, who regularly leads on complex IP and copyright appeals for multinational clients. In October 2025, the firm expanded its Boston office with the addition of Adam Gershenson from Cooley LLP.

Responsables de la pratique:

Robert Niles-Weed; Zack Tripp


Autres avocats clés:

Mark Perry; Greg Silbert; Josh Wesneski; Adam Gershenson


Les références

‘Weil, Gotshal & Manges has top-notch legal thinkers and writers. They have no sharp elbows when working with other counsel, both as legal support of a trial team and as appellate counsel picking up a case post-judgment.’

‘The firm has top-notch legal analysis, strategy, and writing capabilities. It collaborates well with trial counsel, whether as legal support while a case is before the trial court or as appellate counsel post-judgment.’

‘Mark Perry is a great legal strategist with deep knowledge of Federal Circuit and Supreme Court issues. Josh Wesneski has a deep understanding of constitutional issues.’

Principaux clients

Altria Group


Paramount Global


Rimini Street


Grubhub


ExxonMobil


TripAdvisor and its directors


Saks Fifth Avenue


CareDx


Edwards Lifesciences


Elanco


Warner Bros. Discovery


The Sears Liquidating Trust


Apple


CBS Studios


LAL Family Corp


AMC Entertainment


Dental Monitoring


Principaux dossiers


  • Delivered a precedential Ninth Circuit victory for Rimini Street in a copyright dispute against Oracle, establishing the legal standard for derivative works under the Copyright Act.
  • Secured a Federal Circuit victory for Altria Group in a patent dispute against R.J. Reynolds, affirming a $95 million damages award and a 5.25% ongoing royalty regarding e-vapor device technology.
  • Won a circuit-splitting appellate victory for Paramount Global in a putative nationwide class action regarding alleged violations of the Video Privacy Protection Act.

Wiley Rein LLP

Based in Washington DC, Wiley Rein LLP is a mainstay in the federal courts of appeals, where it manages a varied docket of regulatory and administrative disputes. The group handles appeals involving government contracts, professional liability, and matters at the intersection of media and technology. Claire Evans and Thomas Johnson Jr co-chair the issues and appeals group. Evans’ recent work involves representing national telecoms providers in regulatory settings and litigating infrastructure appeals aimed at expanding broadband access. Meanwhile, Johnson Jr is leading challenges to FCC digital-discrimination regulations and net neutrality mandates. The practice also benefits from the expertise of Jeremy Broggi, who focuses on complex administrative and constitutional law litigation.

Responsables de la pratique:

Claire Evans; Thomas Johnson Jr


Autres avocats clés:

Jeremy Broggi


Principaux clients

Nucor Corporation


CTIA–The Wireless Association


Nexstar, Inc.


United States Chamber of Commerce


CNA Insurance Companies


The Boeing Company


Allied World Surplus Lines Insurance Company and related Allied World companies


NRSC (National Republican Senatorial Committee)


Verizon Communications


American Institute of Steel Construction


Principaux dossiers


  • Represented Brake Plus NWA and Williams & Lake in an Eighth Circuit appeal challenging the National Highway Traffic Safety Administration’s determination that the installation of certain brake-light products is unlawful under the Administrative Procedure Act.
  • Represented the petitioner in a U.S. Supreme Court certiorari petition in Cunningham v. Baltimore County challenging the application of qualified immunity to a police officer who shot a child.
  • Represented a petitioner as lead counsel in a U.S. Supreme Court petition challenging Georgia’s implied consent law regarding the conditioning of driving privileges on the forfeiture of Fourth Amendment rights.

Williams & Connolly LLP

Williams & Connolly LLP’s Washington DC-based team maintains a formidable appellate practice, having argued eleven merits cases before the US Supreme Court during the past two terms. The firm serves a sophisticated client base across the tech, financial services, and pharma industries, notably acting for Pfizer in high-stakes product liability matters and Anti-Terrorism Act proceedings. While historically renowned for its trial prowess, the firm is now considered ‘equally superb at the appellate level’ for its handling of complex constitutional, regulatory, and business-critical disputes. Lisa Blatt chairs the practice and maintains a historic record of 55 US Supreme Court arguments, the highest number for any female practitioner. Widely regarded as ‘one of the best, if not the best, Supreme Court advocates in the country’, Blatt specializes in pharma law and IP, recently securing four US Supreme Court victories for trademark and copyright holders. Amy Saharia is another prolific member of the team, recently arguing a US Supreme Court case regarding the Mandatory Victim Restitution Act and handling several appeals for Starbucks across the country. Luke McCloud, a former Assistant to the Solicitor General, was recently invited by the US Supreme Court to argue the merits in a closely watched double jeopardy case concerning sentencing for firearms and violent crimes. Sarah Harris  departed the firm in January 2025 to serve as acting US Solicitor General.

Responsables de la pratique:

Lisa Blatt


Autres avocats clés:

Amy Saharia; Luke McCloud


Les références

‘Lisa Blatt is one of the best, if not the best, Supreme Court advocates in the country, and she is equally good in the courts of appeals. Her oral advocacy and brief-writing skills are unequaled.’

‘Amy Saharia has much the same skill set as Lisa Blatt and is well on her way to equalling her stature in the Supreme Court.’

‘For many years, Williams & Connolly prided itself on trial-level litigation, but it is now equally superb at the appellate level.’

Principaux clients

UBS Financial Services, Inc.


Starbucks Corporation


CVS Health


Jack Daniel’s Properties, Inc.


Monterey Bay Aquarium Foundation


Aetna Life Insurance Company


MGA Entertainment


Trireme Energy Holdings Inc.


Perkins Coie


Pfizer, Inc.


United Therapeutics


Merck Sharp & Dohme B.V.


Google LLC


E.M.D. Sales, Inc.


Amicus For Supreme Court, Court-Appointed


Holsey Ellingburg, Jr.


Jeanne Ann Burton, Chapter 7 Trustee for Vista-Pro Automotive


Munson P. Hunter, III


Resolution Copper Mining LLC


Cotter Corporation and Commonwealth Edison Company


Conduent State Healthcare LLC


Principaux dossiers


  • Represented Starbucks Corporation in multiple appeals concerning constitutional and statutory questions arising from NLRB proceedings. The firm secured a victory before the Eighth Circuit, which held the board applied an incorrect standard regarding alleged employee interrogation, and further victories before the Third and Sixth Circuits, which vacated monetary remedies as exceeding the scope of the NLRA.
  • Secured a unanimous U.S. Supreme Court ruling for E.M.D. Sales, Inc. confirming that the preponderance-of-the-evidence standard applies to FLSA exemptions. The decision clarified the burden of proof for employers seeking to demonstrate that employees are exempt from minimum-wage and overtime-pay provisions.
  • Secured a Delaware Supreme Court ruling for Conduent State Healthcare LLC, affirming the trial court’s decision to set aside inconsistent jury verdicts. The decision grants a new trial regarding Conduent’s claim for insurance indemnification following a $235m settlement.

WilmerHale

WilmerHale‘s ‘premier appellate and Supreme Court practice’ is frequently sought out for its ability to handle intricate appeals and regulatory issues. The team provides strategic depth across diverse sectors including antitrust, financial regulation, IP, and constitutional law, often advising other legal teams on their most critical appellate matters. The group is particularly prominent in the Federal Circuit, where it maintains a consistent schedule of arguments in patent and administrative law disputes. Operating from Washington DC, practice co-chair Seth Waxman brings the experience of a former US Solicitor General and has appeared before the US Supreme Court more than 85 times. Fellow practice co-chair Mark Fleming is based in Boston and focuses on patent and constitutional law, recently winning three Federal Circuit cases in one week that vacated $523m in judgments. In Washington DC, practice vice chair Daniel Volchok recently secured an Eighth Circuit victory in a multimillion-dollar mineral rights dispute involving sovereign immunity and challenged the constitutionality of a 20-year FTC cease-and-desist order in the Fifth Circuit. Also in Washington DC, Thomas Saunders handles patent and government contract disputes, while Ari Holtzblatt represents tech and media companies in appeals involving consumer class actions, due process, and antitrust claims. The practice further strengthened its West Coast presence with the October 2025 arrival of former California Solicitor General Michael Mongan in San Francisco.

Responsables de la pratique:

Seth Waxman; Mark Fleming; Daniel Volchok


Autres avocats clés:

Thomas Saunders; Ari Holtzblatt; Michael Mongan


Les références

‘WilmerHale is a premier appellate and Supreme Court practice, without question.’

‘Seth Waxman has been a longstanding counsel to our industry on appellate matters. He is dogged in pursuing our interests, and he deploys his considerable experience as a litigator and his knowledge of the industry to great effect.’

Principaux clients

Richard Glossip


PNC Bank, NA


Growth Energy


Marilyn Mosby


Biogen Inc.


Comcast Cable Communications, LLC


Medtronic plc


ConocoPhillips Company


Intel Corporation


Intuit


Continental Resources


Ryder Ripps


Winston Taylor

Winston Taylor acts for medical technology companies and sports sector clients in its appellate and critical motions practice, where it handles matters involving federal preemption, environmental regulation, and class certification. Recent work for the group includes a Ninth Circuit reversal regarding antitrust claims for professional swimmers and a Supreme Court victory in a federal sentencing case. Based in Chicago, Linda Coberly co-leads the firmwide litigation department and provides counsel on securities fraud and product liability disputes. The appellate and critical motions practice is co-headed by Chicago-based Scott Glauberman, who focuses on class actions and commercial litigation, and Michael Kimberly in Washington DC, whose practice spans tax controversies and constitutional law. Kimberly joined the firm from McDermott Will & Schulte in May 2025.

Responsables de la pratique:

Scott Glauberman; Michael Kimberly; Linda Coberly


Les références

‘Michael Kimberly is simply the best appellate and APA advocate I know. His written and oral advocacy are unparalleled. He makes the most complicated issues seem clear-cut and obvious.’

‘This is a practical, smart, and capable team. Because Winston Strawn tries so many cases, they are used to jumping into matters on short notice.’

‘Linda Coberly is sensational – practical, business-minded, and very collaborative.’

Principaux clients

Abbott Laboratories


Allstate Insurance Company


Corning


Cox Communications


Cresco Labs


Hikma Pharmaceuticals


HP Inc.


Macquarie Infrastructure Corporation


Motorola Mobility


Potomac Edison Company


Advanced Medical Technology Association


Alignment Healthcare


Pharmaceutical Care Management Association


Principaux dossiers


  • Represented the petitioner in a 5-4 Supreme Court victory in Hewitt v. United States, successfully arguing that the First Step Act’s reduced sentencing provisions apply to defendants whose prior sentences were vacated and require resentencing.
  • Won a Ninth Circuit reversal for Thomas Shields and professional swimmers in Thomas Shields v. World Aquatics, allowing antitrust claims against international swimming restrictions to proceed to trial.
  • Represented an individual in a United States Supreme Court case against New Jersey Transit concerning the ability to sue out-of-state public transportation agencies in state court for accidents.