Widely considered one of the leading US-based international litigation practices, Cleary Gottlieb Steen & Hamilton LLP is a key contender for complex, high-profile cases worldwide. With impressive strength spanning tortious interference, breach of fiduciary duty, and negligence, members of the team are adept at representing domestic and multinational financial institutions, as well as international organisations and trade associations across all industries. The team also has extensive experience in the anti-terrorism space. Team head Carmine Boccuzzi is based in New York, and frequently defends major investment banks and corporations, as well as disputes including foreign states. Boccuzzi has recently led on securing victories for Bosch in the high-profile Volkswagen emissions claims. In the same office, Jared Gerber and Roger Cooper both have expertise in securities litigation, while Jeffrey Rosenthal acts on a wide range of disputes spanning joint venture disputes, financial valuation, and bilateral investment treaty matters. Lina Bensman acts on ‘bet-the-company’ disputes and class actions, focusing on complex civil litigation across states and internationally.

The ‘formidable and superior legal team’ at Debevoise & Plimpton LLP consists of a ‘host of bright, intelligent and independently remarkable practitioners who possess a depth of knowledge and experience’, with a practice split into white collar and regulatory defence, commercial litigation, international arbitration, and intellectual property. The firm represents clients spanning multinational corporations, sovereigns, and high-net-worth individuals. Based in New York, practice head Andrew Ceresney has experience representing public companies, financial institutions, and leading asset management firms in both federal and state courts. Also leading the team that is ‘very responsive, tactical, and leaves no stone unturned’ is Jyotin Hamid, with extensive experience handling complex commercial litigation matters, particularly when related to employment disputes. Catherine Amirfar, based in New York, has a practice centered on public international law, and has experience appearing before the International Court of Justice, while Mark Friedman, also in New York, is highly skilled in the international arbitration space. New York based William Taft is noted for his commercial and corporate governance litigation expertise, while in Washington DC, David O’Neil is key to the team.

Gibson, Dunn & Crutcher LLP represents leading clients in high-profile arbitrations across the US and internationally, frequently acting for global corporations and sovereign governments. Complex arbitrations in the environment, technology, and intellectual property are all strengths of the practice, with members of the team notably representing clients in leading cases. Recently, members of the practice represented Chevron Corporation in a successful RICO and fraud suit, successfully barring enforcement of a $9 billion judgment. Leading the practice are Perlette Michèle Jura and William E. Thomson in Los Angeles, and Andrea Smith in Texas. All have extensive complementary experience in international litigation, with Jura also boasting ESG knowledge. Also of note is Jacob Spencer in Washington DC, who yields experience advising clients in the tech, food, and transportation industries. In New York, Delyan Dimitrov is a key name, with a focus on foreign judgment and arbitral award enforcement.

Quinn Emanuel Urquhart & Sullivan, LLP ‘stands out for its unparalleled excellence in international arbitration’, with vast expertise spanning sovereign litigation, global asset recovery, international arbitration related litigation, and bankruptcy and restructuring. The team also has a dedicated Latin America practice, with proficiency in both Spanish and Portuguese. New York-based Dennis Hranitzky is an ‘amazing strategic thinker’, with a focus on multinational litigation, including asset recovery matters and cross-border insolvency matters. William A. Burck also leads the team, acting out of the Washington DC office, with expansive white-collar experience. Los Angeles based Kristin Tahler focuses on international white collar crime defence and internal investigations, as well as complex government investigations, while DC based Gabriel Soledad is adept at handling regulatory matters, and frequently represents both plaintiffs and defendants. David Orta is ‘formidable in a hearing or trial’, and based in the Miami office of the firm.

The practice at White & Case LLP is ‘truly exceptional’, and consists of ‘outstanding partners and associates’, with expertise handling complex commercial litigation, both in the US and internationally. The team represents leading tech companies in high-value litigation, and is particularly skilled at enforcing and defending awards judgments. Representing governments is another strength of the practice, demonstrating its ability to act on complex, cross-border issues. Based in Miami, Jim Robinson leads the team along with New York-based Glenn Kurtz and Dave Hille. In Washington, Tara Lee is a key part of the ‘extremely creative and very independent team’, while Christopher Curran routinely leads on matters involving foreign sovereigns and corporations. Claire DeLelle is skilled at representing foreign financial institutions in US courts and has expertise in the oil and gas sector, notably representing a national oil company in complex litigations. In Los Angeles, Rachel Jari Feldman is an ‘outstanding lawyer’ and represents corporations in the technology and social media sectors, while Julian Lamm has ‘outstanding communication skills and broad legal knowledge’.

Arnold & Porter’s litigation team is recognized for its ability to handle high-stakes and complex matters for both national and prominent multinational corporations, with deep experience across state, federal, and international courts. A key area of focus within the practice is investor-state disputes, complemented by its expertise in navigating intricate cases under the ATA, TVPA, AT, and FSIA. The team represents a diverse client base, including banks, energy companies, foreign sovereigns, and major medical firms like Pfizer and AstraZeneca, and is particularly noted for its robust anti-corruption capabilities, with experience in the Foreign Corrupt Practices Act and UK Bribery Act. Led by Washington DC-based Kenneth Chernof, who co-chairs the complex litigation practice alongside James Herschlein in New York, the team also boasts seasoned professionals such as Marcus Asner, who focuses on investigations. The team also includes experienced arbitrators Paolo Di Rosa in DC and Maria Chedid in San Francisco, who are regularly sought after for their representation of sovereign states and private sector clients in both domestic and international disputes. Monty Taylor left the practice in June 2024.

Baker McKenzie LLP‘s international litigation practice regularly represents clients in complex commercial disputes, particularly class actions and multi-party litigation, in matters spanning jurisdictions. Enforcing US judgments abroad and foreign judgments in the US is another strength of the practice. San Francisco-based Mark Goodman co-chairs the commercial litigation practice, with experience in state and federal courts, for domestic and international clients. In Washington DC, Jennifer Semko‘s practice focuses on internal investigations, with expertise in cross-border judicial processes. Operating out of the Dallas office, Michelle Hartman has over two decades advising on complex multidistrict and class litigation, as well as leading in workplace and internal investigations. Dallas-based Mark Taylor focuses on defending class actions, and multi-district litigation, while William Roppolo in Miami acts on matters with alleged antitrust, fraud, and money laundering violations. In Houston, David Baay  has extensive knowledge of greenwashing and PFAS litigation. The practice has expanded significantly in the last year, with David Baay, Jack Massey, Kelsey Machado, and Ian Shelton joining the practice in January 2024. Teresa Michaud and Jessica Averitt left the practice in February and March 2024 respectively.

Freshfields’s international litigation practice is well-versed at handling complex cross-border issues, ranging from parallel court proceedings to regulatory investigations. Members of the team are knowledgeable of investigations carried out by the DOJ, SEC, FCA, and other regulators, whilst equally skilled at succeeding in litigation in jurisdictions worldwide.  Displaying the team’s cross-border prowess, the team recently represented Sumitomo Pharma in relation to a securities lawsuit in Bermuda. The team works closely with others in the firm, including the white-collar investigations, arbitration, securities, and antitrust practices. Based in New York, Adam Siegel and Gayle Klein lead the team. Tim Harkness handles transnational and cross-border disputes, particularly those involving allegations of fraud, and post M&A disputes. Also of note are Kimberly Zelnick, David Livshiz, and in Washington, Jennifer Loeb. The team continues to grow, with the arrival of Matthew Haggans from the US Attorney’s Office in May 2024, and Austin Evers from the Department of Justice in November 2024.

King & Spalding LLP boasts an impressive international litigation practice, with particular experience handling disputes involving multiple jurisidictions and parallel proceedings. Blue chip multinationals across a range of industry sectors rely on the expertise of the team, including clients in the energy, banking, healthcare, and pharmaceutical sectors. The team works closely with the commended international arbitration, trade, and white-collar practices of the firm. Based in Houston, Reggie Smith has extensive expertise in the energy sector, acting on complex disputes in the oil and gas and renewable energy sectors. In the same office,Wade Coriell leads the team, while in Atlanta, Andy Bayman and Elizabeth Silbert act as heads of the team. In New York, Richard Marooney is skilled at handling cross-border commercial litigation, M&A litigation, and securities litigation. Also on the East Coast, Randy Mastro represents clients in complex civil cases, securities litigation, and white-collar criminal matters, with vast knowledge of the federal and state appellate courts. Olivia Radin advises global companies on internal investigations, regulatory investigations, and global risks. Radin represents clients in the technology, financial services, and consumer industries.

The international arbitration practice at Latham & Watkins LLP routinely handles complex arbitrations across a number of practice areas, with experience in antitrust, employment, insolvency, and securities litigation work. Leading tech and pharma companies, as well as banks rely on the expertise of the practice, notably including Sinovac Biotech and Telefónica S.A. Orange County-based Michele Johnson leads the team, with knowledge of securities class actions, shareholder derivative litigation, and post M&A litigation. In Chicago, Sean Berkowitz and Mary Rose Alexander  are key names. Raghav Bajaj joined the Austin office from Haynes and Boone, L.L.P.  in August 2024.

Dechert LLP’s international litigation practice is renowned for its exceptional capabilities in handling complex, cross-border disputes, representing a broad spectrum of clients including multinationals, sovereign states, investment funds, and financial institutions. Demonstrating its global reach and expertise, the team recently represented two investment funds involved in the sovereign restructuring of Venezuela. The practice is led by Joni Jacobsen in New York and Michael H. McGinley in Philadelphia, both of whom bring extensive experience in handling cross-border litigation.  Additionally, Mauricio España, based in New York, specializes in white-collar and securities litigation, leveraging his bilingual skills to represent Latin American companies and individuals. In Washington, Christina Sarchio’s focus on class actions and white-collar defense, and has vast experience in the consumer products and financial sectors. Steven Engel further bolsters the practice with expertise in a diverse range of civil litigation, including administrative law, constitutional law, and securities cases.

Diaz Reus International Law Firm’s international litigation practice is recognized for its expertise in managing complex proceedings across multiple jurisdictions, particularly those involving parties from the US and Latin America. The team is well-regarded for representing high-net-worth individuals in commercial disputes, with a particular focus on intellectual property and financial fraud matters. Michael Diaz Jr. and Gary Davidson lead the practice, bringing extensive experience in handling disputes arising from Latin America. The team is further strengthened by the expertise of Marta Colomar-Garcia, Brant Hadaway, and Evan Stroman. Colomar-Garcia is qualified in Florida, New York, the District of Colombia, and Spain, and uses this expertise to represent foreign companies and governments in complex litigation matters, while Hadaway focuses on regulatory compliance matters for foreign and domestic clients. All lawyers are based in Miami. Ishmael Green joined the practice from Lewis Bribois Bisgaard & Smith in July 2024.

DLA Piper LLP (US)‘s team is commended for taking a ‘pragmatic and creative be approach to very difficult and complex projects’. The firm is particularly skilled at handling cross-border enforcement as well as asset recovery. The team notably recently achieved a high value victory for Rusoro Mining Limited linked to the enforcement of a $1.5 billion award against Venezuela. The team also has expertise in the energy sector, acting on complex Energy Charter Treaty enforcement matters. Ilana Hope Eisenstein chairs the practice, based in Philadelphia, while in New York, James Berger and Loren Brown lead the practice. Berger focuses on the enforcement of arbitral awards and foreign judgments, and routinely advises on insurance and asset recovery issues to leading litigation funders and insurers. Also in New York, Charlene Sun and Joseph Wan are noted.

The international litigation department at Foley Hoag LLP is renowned for its public international law expertise, frequently representing States in disputes before major international courts and tribunals. In addition to sovereign state representation, members of the practice are skilled at handling climate change litigation. New York-based Christina Hioureas is skilled in this area, having co-led the representation of Sierra Leone and Mozambique in high-profile climate- related matters. Hioureas leads the team with Constantinos Salonidis, who is based in the firm’s Washington office. Salonidis has extensive experience in both litigation and arbitration, specializing in representing sovereign States in complex matters. In Boston, Andrew Loewenstein is a key name, with intricate knowledge of the Foreign Sovereign Immunities Act, while DC-based Lawrence Martin represents sovereigns before international dispute fora, including the International Court of Justice and International Tribunal for the Law of the Sea.

Grant & Eisenhofer P.A. has vast experience in international securities litigation, often representing large groups of institutional investors in high-profile cases. The firm frequently serves as global counsel for plaintiffs in complex legal matters and provides international securities monitoring for its clients. Members of the team notably represent investors in the high-profile Volkswagen emission case. Co-founder Jay Eisenhofer leads the team with his expertise in securities and corporate governance litigation, along with Olav Haazen and Guus Warringa. Haazen specializes in cross-border securities fraud and antitrust litigation, with Caitlyn Moyna also particularly knowledegable of securities fraud class actions, as well as shareholder derivative actions and merger litigation. Also key to the practice are Jonathan Davenport and Alice Cho Lee, with extensive securities litigation expertise.

Linklaters LLP boasts a leading litigation practice, acting for a number of multinationals and foreign governments on complex cross-border lawsuits and investigations. Demonstrating the breadth of its experience, the team recently represented a leading financial services in a number of high-profile lawsuits related to allegations of price-fixing. The team acts for a number of leading banks and financial institutions. Leading the practice is Washington based Adam Lurie, who focuses on complex civil litigation, white-collar defense, and crisis management work. Lurie has a wealth of experience, having acted in all three branches of US government. In the same office, Doug Davison represents clients in regulatory enforcement and compliance matters, while Richard Smith focuses on complex litigation, with experience in grand jury investigations as well as anti-corruption work. In New York, Douglas Tween and James Warnot are noted.

The cross-border disputes group at Meister Seelig & Fein PLLC is recognized for its representation of high-net-worth individuals, companies, and sovereign nations in a wide range of complex cases. The practice is experienced at working with foreign law firms in matters involving section 1782 applications, and acts on high-stakes commercial disputes spanning Europe, Asia, the Middle East, and United States. Alexander Pencu leads the practice, with a leading product liability practice, and frequently representing European manufacturing clients, while Christopher J. Major is skilled at handling insolvency litigation cases, including large Chapter 11 proceedings and fraudulent transfer litigation. Kathryn Matthews also leads the team, skilled at handling cryptocurrency litigation and cross-jurisdictional discovery. Michael Sloan represents clients in proceedings involving federal, state, and local governments, while Rick Jancasz specializes in banking litigation. Marina Tarasova, Eva Sullivan, and Leah Henry are noted.

Sidley Austin LLP boasts a ‘multidisciplinary team that focuses on solving clients needs’, handling a number of high-profile, complex disputes, that include numerous jurisdictions. Members of the team work for leading US and foreign corporations, appearing in federal and state courts in the US. Based in Washington, Mark Guerrera and Gregory Williams lead the team. Guerrera has extensive experience representing financial institutions in high-value litigations, often concerning novel points of law, and is adept at handling matters including leading private equity funds. Williams similarly has knowledge of intricate litigation, acting frequently on litigations with parallel proceedings and concerning international public policy. Yvette Ostolaza in Dallas and Carter Phillips are key to the practice. The team continues to grow, with the arrivals of Gregory Williams and Aryeh Lev Kaplan from McDermott Will & Emery LLP in July 2024.

Steptoe LLP‘s international litigation practice represents sovereign states, leading multinationals, and high-net-worth individuals, in complex disputes spanning multiple jurisdictions. The team is often involved in groundbreaking cases, including representing ExxonMobil in an intricate dispute against Cuban state-owned entities. Based in Washington DC, Steven Davidson leads the practice, with expertise representing Fortune 500 corporations and leading companies, particularly in cases including complex enforcement issues. Also in DC, Michael Baratz represents clients in federal and state courts at all stages of litigation, while in New York, Michael Miller’s practice focuses on white-collar investigations and prosecutions. Nate Kritzer litigates investment disputes covering securities and shareholder litigation, as well as real estate and trade secrets litigation. The capabilities of the practice expanded significantly in 2024, following SKV joining the firm to form a dedicated practice in Houston. This notably included the addition of Hector Chavez, Craig Smyser, and Eugene Zilberman .

Williams & Connolly LLP‘s international disputes team represents a number of companies and states in high-profile disputes, with expertise spanning the intellectual property, construction, energy, and telecommunications sectors.  Members of the team work very closely with arbitration specialists in the firm, acting frequently on litigation linked to headline-grabbing ICSID arbitrations. Washington-based Jonathan Landy is an experienced litigator, with extensive experience representing financial service institutions and multinationals. Landy also regularly represents labour unions in government investigations and complex civil litigation. Christopher Manning has a focus on financial services and securities litigation, and often represents government contractors, while Benjamin Graham has complementary arbitration expertise.

Winston & Strawn LLP‘s litigation practice is commended for its ‘combination of expertise, creativity, and dedication’, and is skilled at handling a wide array of high-profile litigations, with expertise in international cartel matters, complex transportation matters, and government investigations. The team’s ‘diversity and deep expertise in sports law sets them apart’, with practice head Jeffrey Kessler particularly skilled in this area. Kessler is also well versed at handling antitrust and intellectual property matters, and is based in New York along with Marcelo Blackburn, a class action and investigation specialist. Operating out of Chicago, Dan Webb also leads the team along with Washington based Abbe David Lowell, who specialises in white collar crime. In DC, Christopher Man is a key name, while in Houston, Imad Khan is of note.