Established in June 2025 by previous arbitration head at Milbank, Viren Mascarenhas, Mascarenhas Law PLLC is a boutique disputes practice handling investor–state and international commercial arbitration, alongside arbitration-related litigation in U.S. courts.

Led by Alexandre de Gramont, the team at Womble Bond Dickinson (US) LLP fields a growing practice, with particular strength in energy, natural resources, manufacturing, construction and life sciences disputes.

Widely considered one of the leading US international arbitration practices, Debevoise & Plimpton LLP is widely recognized for handling ultra-high-value international arbitrations, with extensive experience in investor–state and public international law disputes, including matters engaging treaty protections, sanctions and state regulatory conduct. The team is particularly noted for its advocacy in energy, natural resources and financial services arbitrations, leveraging a fully integrated New York, Europe and Asia practice to run multi-jurisdictional proceedings. The group is jointly headed out of the New York office by Catherine Amirfar and Mark W. Friedman. Seasoned arbitrator, Amirfar leverages deep experience across treaty-based disputes, complex international commercial arbitrations, and related international litigation. Friedman is a leading international arbitration practitioner with extensive experience across investment treaty and complex international commercial arbitrations, notably handling disputes involving mining, natural resources and extractive industries. Ina Popova is sought out by clients in the energy, mining and tech, media and telecoms sectors. Dietmar Prager is highly active across ICC, ICSID, LCIA, AAA and ICDR proceedings. Natalie Reid is a key port of call for multinational corporations, international and non-governmental organizations through proceedings in US courts and international fora. Laura Sinisterra is a key player in international investment and commercial arbitration. Julianne Marley is another key member of the team.

Housing a market-leading international arbitration practice, Freshfields showcases stellar expertise across investor–state arbitration, including extensive experience under ICSID and other treaty-based regimes, and related award annulment and enforcement proceedings before national courts. The practice combines investment treaty and high-end international commercial arbitration, and is especially noted for disputes arising in energy, natural resources, infrastructure and construction, as well as for its deep regional expertise across Latin America, Africa, Europe and Asia, acting for both sovereign states and multinational entities. Steering the group is New York-based Elliot Friedman who maintains a renowned arbitration reputation, elevated by his role as lead counsel for ConocoPhilips in its US $8.5 billion-plus ICSID award against Venezuela. Also in the New York office, Noiana Marigo draws on longstanding experience in complex international arbitrations across the Americas, involving a wide range of sectors, and Thomas W. Walsh steers his workload towards arbitrations arising out of the life sciences, tech and extractive sectors. In Washington, DC Nigel Blackaby KC stands out for his role in ad hoc and institutional arbitrations. Also in Washington, DC Caroline Richard is a go-to for investor-state arbitrations, frequently involving the mining, natural resources and infrastructure sectors.

Confirming its status as a ‘market leading international arbitration team with a very strong bench’, King & Spalding consistently handles the enforcement and annulment of arbitral awards and parallel court proceedings before U.S. and foreign courts. The group showcases longstanding strength in disputes arising from energy, natural resources, construction and infrastructure projects, and has expanded its litigation capability into M&A, private equity and other high-stakes commercial disputes, with deep experience handling sovereign and state-adjacent matters across Latin America and other emerging markets. Leading the team is Houston-based Wade Coriell, a seasoned arbitration practitioner with a prominent energy disputes practice, and Atlanta’s Elizabeth Silbert, who exhibits stellar arbitration expertise, routinely leading on cases exceeding US $1 billion in dispute. Also based in Houston is Craig Miles who is a key player in ICSID awards. New York’s Samaa Haridi, Miami-based Harry Burnett and Washington, DC-based Matthew McGill and Aloysius Llamzon are all key arbitration figures within the group.

Leveraging the bench strength of its international network of offices White & Case LLP has cultivated a leading arbitration practice in the US, excelling in the enforcement and annulment of arbitral awards and judgments, and complex parallel proceedings before national courts worldwide. The team is particularly noted for disputes arising from investor-state arbitration, energy and natural resources, construction and infrastructure, financial services and technology, with deep experience handling sovereign and state-related litigation across Latin America, Eastern Europe, Africa, the Middle East and Asia. Abby Cohen Smutny is based in Washington, DC and retains a renowned arbitration reputation globally, with a track record in significant investor-state arbitration victories across a myriad of industries, from financial services, mining and oil & gas to power, pharmaceuticals, construction and telecommunications. Also in Washington, DC, Carolyn Lamm showcases expertise in investor–state arbitration, with noted experience in ICSID and Additional Facility proceedings. In New York, Damien Nyer expertly undertakes proceedings across ICC, ICSID, ICDR, AAA, SIAC and LCI, as well as in ad hoc proceedings. Also in New York, global co-head of international arbitration Ank Santens is recognized for her involvement in high-value commercial, investment and construction disputes, drawing on experience in arbitrations in all major hubs. Washington, DC-based Hansel Pham and Miami’s Silvia Marchili are other key arbitration practitioners within the group.

Fielding a leading international arbitration practice with a pronounced focus on investor–state disputes, Arnold & Porter is skilled in acting for sovereign states in treaty-based arbitrations under ICSID, UNCITRAL and other major rules. Anchored by a strong U.S. West Coast platform, The team is also noted for its dual role as counsel and arbitrators in both investment and commercial arbitrations, with notable expertise in technology, life sciences and Asia-related disputes, as well as in arbitration-related litigation and institutional engagement. Heading the team in San Francisco is Maria Chedid, a renowned arbitrator leveraging experience across all major arbitral institutions, involving diverse practice areas and an expansive geographical breadth. Washington DC-based Paolo Di Rosa is a skilled arbitrator across high-profile investor-state disputes. Also in Washington  DC, Sally Pei focuses on high-value investment treaty arbitration for sovereign states. In New York, Mélida Hodgson, harnesses great experience at the intersection of arbitration with investor-state disputes, showcasing noted talent representing regions in Latin America.

International arbitration boutique Chaffetz Lindsey LLP boasts particular strength in investment treaty arbitration and complex international commercial disputes, including insurance-related and arbitration-related court proceedings. The practice is also noted for its work in enforcement actions and expert advisory mandates, as well as for its growing focus on renewables and energy-related arbitrations. James Hosking is widely recognized for his Latin America-focused ISDS work, alongside a broad cross-border practice spanning Europe, MENA and Asia-Pacific, and for handling disputes at the intersection of energy, infrastructure, telecommunications and technology. Drawing on longstanding arbitration experience, bilingual Yasmine Lahlou excels in Latin America-related disputes, including Brazil-focused matters, and proceedings conducted under the rules of the major arbitral institutions. Adept in arbitration-related litigation is Andreas Frischknecht, who brings market-leading expertise in the enforcement and challenge of arbitral awards before US courts. Caline Mouawad is particularly noted for disputes in the energy, mining, consumer goods and telecommunications sectors, including matters conducted in both English and French. Seasoned arbitration practitioner Aníbal Sabater high-value steers his workload to international commercial and investment treaty arbitration, particularly disputes arising from energy, infrastructure, construction and mining projects, including post-M&A and project-related arbitrations. David Lindsey is a key port of call for complex international commercial and investment treaty arbitration.

With a unique reputation for representing Ukraine’s Ministry of Foreign Affairs in multiple international disputes arising from the invasion of Ukraine, Covington & Burling LLP is well practiced in handling state-to-state, investment treaty and complex commercial disputes. Counting sovereign states, state-owned entities, multinational corporates and policyholders within its broad client roster, the team exhibits deep experience in advising on politically sensitive mandates, across Eastern Europe, Latin America, the Middle East and in multi-billion-dollar insurance and enforcement proceedings. Washington, DC-based practice head Miguel López Forastier draws on civil and common law training, as well as bilingual capabilities, to represent clients across the oil and gas, mining, pharma and financial services industries. Also in Washington DC, Marney Cheek is highly active before major arbitral tribunals and courts, including AAA, ICSID, PCA, and SIAC. In New York Dave Pinsky is an expert in cases rooted in Russia and Eastern Europe, with recent work including winning a $5bn award for Ukraine’s state owned oil and gas company, Naftofaz in an investment arbitration against Russia. Also based in New York is Nicole Duclos whose broad skill set spans construction, energy, mining, post-M&A, joint ventures and shareholder disputes. In the Washington DC office, Allan Moore is a go-to for Energy disputes and Nikhil Gore is equipped to cover disputes spanning Asia, Europe, the Middle East and North America.

 

Curtis, Mallet-Prevost, Colt & Mosle LLP is particularly distinguished for its representation of sovereign states, state-owned entities and sovereign wealth funds in investor–state arbitrations, including disputes involving taxation, sanctions and criminal-law–adjacent measures. The group showcases skills across all major arbitral rules and key industry sectors, from oil and gas and mining to finance, telecoms, infrastructure and healthcare. Leading the team in New York is George Kahale III who retains a prominent position in high-profile international arbitrations, highlighted by his role in the ExxonnMobil v. Venezuela in which the firm secured the largest annulment in ICSID history. Washington DC-based Claudia Frutos-Peterson stands out for her investor-state and commercial arbitration experience, often representing a myriad of sovereign states. Justin Jacinto is well-equipped to act in arbitrations for other states, state-owned companies, sovereign wealth funds and private companies. While in New York, Simon Batifort is especially noted for his work in Africa, Middle East and Central Asia-related ISDS matters, and Hermann Ferre focuses on construction arbitrations.

Housing an experienced investor state and commercial arbitration practice, the team at Foley Hoag LLP is well-equipped to represent states and private entities in award enforcement and set aside matters before the US and French courts. Its client base spans sectors from energy and mining to technology, transportation and consumer industries. In Washington, DC, co-head Constantinos Salonidis leverages deep experience representing states in ICSID and UNCITRAL proceedings, currently representing Armenia in all international legal cases arising from conflicts with Azerbaijan.  In the same office, Tafadzwa Pasipanodya is active within a myriad of international courts and tribunals, and Christina Beharry is a go-to for high-value investment claims. In New York, co-head Christina Hioureas is sought out by states, private and state-owned entities for her deep knowledge of public international law, and is particularly noted for her role in advising during UN-facing proceedings. In the same office, Daniel Schimmel routinely serves as chair and emergency arbitrator in high-value, complex disputes.

Housing a fully integrated international arbitration practice, Gibson, Dunn & Crutcher LLP offers end-to-end capability across international commercial and investor–state arbitration, alongside arbitration-related litigation and award enforcement. Leading the group is Rahim Moloo who maintains a strong position in the market for multi-jurisdictional disputes involving energy, mining, infrastructure and telecommunications assets, as well as in annulment and enforcement proceedings arising from large ICSID and UNCITRAL awards. Adept investor-state and geopolitically sensitive international arbitrations is Washington DC’s Patrick Pearsall. Lindsey Schmidt’s broad expertise covers mining, telecoms, insurance and financial services disputes, alongside proficiency in complex, multi-jurisdictional enforcement of arbitral awards. Charline Yim frequently assists clients in disputes arising under numerous major arbitration rules including ICSID, UNCITRAL, AAA, ICDR, ICC, SCC and SIAC, as well as in ad hoc proceedings. Washington DC-based Ankita Ritwik is another key member of the team. All members are situated in New York unless stated otherwise.

 

With strong coverage across America, Europe and Asia, Quinn Emanuel Urquhart & Sullivan, LLP fields a leading international arbitration practice focused exclusively on high takes dispute resolution, spanning commercial and investment treaty arbitrations. Leading the US and Latin America practice is seasoned trial lawyer and arbitration advocate, David Orta who combines expertise across a range of sectors, with experience in cases spanning a wide range of jurisdictions to handle the full spectrum of complex international arbitrations. In New York, Michael Young KC is recognized for his ICC knowledge, routinely acting in disputes arising from energy, construction and infrastructure projects. Daniel Salinas-Serrano has established experience acting for sovereign states, investors and commercial parties in ICSID proceedings, including first-of-their-kind treaty arbitrations for Central American states. Dawn Yamane Hewett deals with a variety of energy, infrastructure, construction and mining arbitrations, with niche expertise in Spanish-only and bilingual cases. Lucas Loviscek is geared to support on high-stakes cross-border disputes across ICSID, UNCITRAL, ICC, LCIA and ICDR rules. Julianne Jaquith is lauded for her role in Latin America–related matters, with sector strength in energy, oil and gas, mining, telecommunications and post-M&A disputes. All lawyers are based in Washington DC unless stated otherwise.

Skadden, Arps, Slate, Meagher & Flom LLP has a leading international litigation and arbitration practice focused on bet-the-company, multi-jurisdictional disputes, including complex international commercial and investor–state matters. The team is reputed for disputes involving cross-border M&A, joint ventures, shareholder and supply agreements, competition, taxation, technology and trade secrets, as well as for handling parallel court proceedings, interim relief applications and global enforcement actions. Co-head Julie Bédard draws on commercial and civil law expertise to act in a wide range of complex disputes and investigations. Co-head John Gardiner is a key mediator, arbitrator and litigator, with frequent appearances before US federal and state courts. Adept in tech, energy and IP-related arbitrations, Gregory Litt is renowned for high-stakes international commercial arbitration. All lawyers mentioned are based in New York. Jennifer Permesly has a niche in energy, mining and infrastructure matters. Timothy Nelson is another key member of the group.

With an impressive global reach in state and sovereign representation, alongside multinational corporates,Three Crowns LLP is desirable in high-stakes international arbitration, spanning investment treaty, international commercial and public international law disputes. The team has a strong track record of handling sensitive matters for the Kingdom of Bahrain, the Republic of Chile, the Sultanate of Oman, and the Republic of Finland. Luke Sobota is an authority in complex international dispute resolution, recognized for his role in multi-billion-dollar claims pertaining to expropriation, fair and equitable treatment, and denial of justice. Liz Snodgrass draws on deep experience in commercial and investment and treaty arbitrations to handle arbitrations in the aerospace, financial, mining, oil and gas sectors. Scott Vesel is well versed across a myriad of international investment and commercial arbitrations, sitting as a go-to for clients in oil and gas, construction and energy sectors. Simon Consedine is a key contact for clients in the construction and private equity space. Nicola Peart is another key member of the team. The team is based in Washington DC.

With pronounced experience in Latin America–related arbitrations and state-side ISDS, Cleary Gottlieb Steen & Hamilton houses a full service investment treaty and commercial arbitration group, frequently representing sovereign states and multinational corporates. Spearheading the group is Ari MacKinnon, who excels in energy and natural resources matters, Spanish-language proceedings, and for advising on procedural issues in Latin American arbitration. Jeffrey Rosenthal is a key player in arbitration-related court proceedings and enforcement, including post-award strategy and parallel litigation before US courts. Carmine Boccuzzi places strong emphasis on disputes involving foreign sovereign states and state-owned entities. Katie Gonzalez is a key member of the team. All lawyers mentioned are in New York.

Clifford Chance has a strong reputation for handling high-value investor–state and complex international commercial arbitrations, with particular depth in Latin America–related matters. The practice is especially active in energy, infrastructure, oil and gas, mining, construction and post-M&A disputes, and is increasingly visible in large-scale ICSID and AAA proceedings, including emerging areas such as cryptocurrency-related arbitrations. Co-head Robert Houck steers the group in commercial disputes, including class actions and cross-border investigations, with particular skills in matters arising under U.S. securities, commodities and antitrust regimes. Washington DC-based co-head José García Cueto has broad experience across commercial and investor-state arbitrations, with an established focus on construction, energy, oil & gas and infrastructure sectors. Also based in Washington DC Steve Nickelsburg has developed a wide practice covering complex civil arbitration matters and litigation, internal investigations, and government enforcement matters. Notably adept in post-M&A disputes, Anthony Candido has a strong pedigree in disputes arising from alleged contractual breaches, fiduciary duty claims and corporate misconduct. Jeff Butler has a track record in arbitration matters before federal and state courts, often involving non-US clients.

Herbert Smith Freehills Kramer‘s arbitration practice is distinguished by high-value investor–state and international commercial arbitrations with a strong Latin America and energy focus, combining multilingual, dual-qualified teams with deep experience in complex LNG, energy transition, sovereign and enforcement-related disputes. Christian Leathley is a leading international arbitration specialist whose practice centres on Latin America, public international law and sovereign matters, regularly acting as advocate in ICC, ICSID, LCIA, ICDR/AAA and UNCITRAL proceedings across the US and the region. Amal Bouchenaki is a dual-qualified US and French arbitration specialist focusing on investor–state and complex commercial disputes, with particular strength in public international law and business and human rights issues. With particular expertise in energy and TMT matters, Marco De Sousa is sought out by investors and states across Europe, the Middle East, Asia and Africa. All lawyers mentioned are in New York.

 

With a strong footprint across Latin America and other emerging markets, Hughes Hubbard & Reed LLP is noted for its growing focus on arbitration-related litigation, including enforcement and set-aside proceedings before US and foreign courts, as well as for advising on emerging issues such as climate-related arbitration. Spearheading the group is Washington DC-based Gaela Gehring Flores, who steers his workload to state-side defense, energy and infrastructure disputes, and arbitration-related enforcement and appellate litigation. John Townsend brings longstanding experience across all major arbitration rules. In New York Daniel Weiner is a key player in international and domestic arbitration and IP disputes, showcasing niche expertise in art and pharma-related disputes. All members listed are in Washington DC unless stated otherwise.

Balancing high-end international commercial arbitration and investment treaty arbitration, Norton Rose Fulbright boasts particular strengths in ICSID and UNCITRAL proceedings involving public international law issues. Based in Houston is seasoned counsel and arbitrator Kevin O’Gorman, who leads a firm-wide arbitration practice across international commercial and investor state arbitration, showcasing notable skills in energy, project, sovereign and ready-based disputes. Also in Houston is Denton Nichols, who is known for her role in multilingual proceedings and disputes involving Latin America-related issues. Heading up the Washington, DC Arbitration practice is Matthew Kirtland, who showcases experience under all major arbitral rules including ICC, LCIA, ICDR, ICSID and UNCITRAL. In San Francisco, Katie Connolly is a prominent member of the team.

Leveraging its multilingual US-based platform, Reed Smith LLP places a strong focus on Latin America-related matters, particularly within the energy and natural resources, life sciences, shipping and commodities, including trade and insurance-related arbitrations. Jointly spearheading the group is Miami-based Francisco Rodriguez, highly reputed his role in investor-state disputes, and José Astigarraga, who brings longstanding expertise representing US, Latin American and European companies in high-value disputes. In New York, Juliya Arbisman maintains her reputation within the mining and natural resources area, while building on her practice focused on emerging markets, particularly within African jurisdictions.

Vinson & Elkins LLP is particularly impressive for its international arbitration and disputes practice in the energy, infrastructure and construction, and technology sectors, acting across international commercial arbitration, investor–state disputes and related court litigation. In Houston, James Loftis‘s expertise straddles international commercial and investor-state arbitrations, encompassing boundary and maritime disputes, cross-border technology disputes, sovereign debt matters and national security–related reviews. With particular strength in Latin America–related disputes, including matters arising from oil and gas and large-scale infrastructure projects, New York’s Camilo Cardozo covers an array of international commercial and investor–state arbitration. Seasoned commercial litigator Peter Danysh places notable emphasis on disputes arising from complex, multi-jurisdictional construction, engineering, energy and infrastructure projects. Jose Sanchez has well-rounded experience in bet-the-company disputes and proceedings involving urgent interim and injunctive relief.

BakerHostetler is a go-to practice for complex, high-value international arbitration, particularly state-side investor-state disputes and international commercial arbitrations, operating across energy and infrastructure projects, securities and class-style arbitrations, technology and digital assets. Global international arbitration head Sashe Dimitroff steers the group from Houston, showcasing stellar expertise across energy and natural resources disputes, as well as complex contractual, fraud and cryptocurrency-related arbitrations. In Washington DC Analía González is a key adviser in complex investor-state arbitration, and has a particular interest in Latin America–related disputes, acting for both sovereign states and investors. Also in Washington, DC, seasoned litigator Paul Levine is best known for handling international arbitrations and disputes, bringing strong trial experience. Dividing his time between New York and Washington DC, Carlos Ramos-Mrosovsky is a key port of call for sovereign governments and multinational companies in energy, mining and infrastructure disputes. Based in Orange County and New York Marco Molina is adept in handling the full range of international arbitration work for clients in the energy, construction and shipping sector. New York’s Gonzalo Zeballos is geared to support on disputes involving asset recovery and enforcement.

Baker Botts L.L.P. is regularly turned to for complex international commercial and investment treaty disputes across multiple seats and arbitral rules, with US-based partners conducting hearings themselves. The firm is particularly strong in energy, mining, technology, aerospace and infrastructure disputes. Steering the group is New York-based Andrew Behrman who has a strong reputation in proceedings conducted under ICC and AAA/ICDR rules. Adept in investor-state arbitrations is Washington DC-based Jennifer Haworth McCandless, who is recommended for in state-involved international commercial arbitration and WTO disputes, with sector strength across energy, mining, oil and gas, infrastructure, real estate and financial services. In Houston, TX Michael Goldberg has developed a strong high-stakes commercial disputes practice spanning energy, construction, finance, insurance, intellectual property and corporate transactions. In New York, Edward Schorr has a high level of experience acting in high-stakes cross-border disputes before US courts and foreign tribunals.

Combining strengths in arbitration and award enforcement, DLA Piper LLP (US) leverages a deep US-based bench operating within a fully integrated global arbitration platform, to handle a range of commercial and investment arbitrations across the energy, natural resources and life sciences sectors. Jointly heading the group is Kate Brown de Vejar, who boasts a well-established client base of private corporations, sovereign states and state-owned entities, placing notable emphasis on high-value proceedings under leading institutional and ad hoc rules, including ICC and treaty-based frameworks such as NAFTA. Alongside Brown de Veja, is co-head Michael Ostrove, a reputed figure in the arbitration space, who has a strong track record in public international law disputes and French and English language proceedings. Kiera Gans exhibits skills as both arbitrator and counsel in complex international commercial and investor-state disputes. James Berger and Charlene Sun are well positioned to handle the enforcement of arbitral awards and foreign judgments. All team members are based in New York.

Eversheds Sutherland’s US-led international arbitration practice showcases exceptional strength in state representation, spanning investor–state arbitration, ICJ proceedings and complex public international law disputes, with a proven reputation as go-to counsel for enforcing arbitral awards and foreign judgments against sovereigns and state-owned entities. In Washington DC co-head William O’Brien is noted for capabilities in high-stakes international arbitration, with a deep background in award enforcement, annulment and New York Convention litigation. Frequently acting as first-chair counsel in high-value cross-border matters, Washington DC-based co-head John Lomas draws on deep experience before major arbitral institutions, US and international courts. In New York, Levon Golendukhin has strong sector expertise across mining, energy, infrastructure and transportation.

 

Latham & Watkins is a reference in the market for international commercial and investment treaty arbitrations, and is regularly turned to for assistance with Latin America-related disputes cases across energy, oil and gas, infrastructure, life sciences, IP and M&A-driven arbitration. With strong credentials in high-stakes international arbitration, team head John V.H. Pierce is equipped to handle commercial and investment treaty disputes, spanning ad hoc proceedings, tribunal advocacy, as well as sitting as arbitrator. Santiago Bejarano‘s client base comprises multinational corporates, states and state-owned entities across a range of arbitral forums.

Linklaters LLP is recommended for its broad practice, counting a broad range of industries in its client roster, showcasing experience under all major arbitral institutions and ad hoc proceedings, as well as representing clients across The Americas, Europe, APAC and EMEA region. Global co-head Joseph Profaizer has built a robust practice spanning public international law, cross-border litigation and high-stakes investor-state disputes. With a Latin America focus, Christian Albanesi stands out for deep institutional expertise from the ICC International Court of Arbitration and his track record in major sovereign-facing cases, including securing a record USD 302 million award against Peru. Adam Lurie‘s arbitration work focuses on ICC proceedings tied to major commercial disputes, emergency arbitrations and court-linked injunctive relief,

Mayer Brown handles commercial and public international law disputes, with particular strength in energy, technology, chemicals, and food and beverage matters, acting across NAFTA/USMCA, HKIAC and other major arbitral frameworks. Michael Lennon, Jr. retains a longstanding reputation in this field, distinguished by extensive trial-to-award experience, enforcement and annulment work, dual role as counsel and arbitrator, and complementary expertise in IP-related disputes. David Weiss has in-depth knowledge of investor-state and international commercial arbitration, with a particular focus on energy, mining and oil and gas disputes in Latin America. With a wide client roster, Jennifer Huang is well known for frequent appearances under ICC, LCIA, ICDR and UNCITRAL rules. John Conlon is skilled in commercial arbitrations involving complex financial, construction, real estate and IP.

Combining arbitration strategy with parallel trade, WTO and enforcement proceedings in bet-the-company matters, Sidley Austin LLP is a go-to for sovereign states, state-owned entities, multinational corporations, and global investors. Jointly steering the practice is New York-based Tai-Heng Cheng, known for her role in high-stakes investor–state and complex international commercial arbitrations, particularly geopolitically sensitive disputes and, Washington DC-based Gregory Williams who brings stellar experience in multi-forum, multi-jurisdictional disputes involving sovereign immunity, enforcement, and parallel proceedings where billions of dollars are at stake. In New York, Simon Navarro is highly active before US and international courts, handling disputes across the US, Latin America, Europe and Asia. In Washington, DC, Jim Mendenhall is well versed in investment treaty arbitration, with a particular focus on disputes arising under free trade agreements and bilateral investment treaties. New York-based Martin Jackson is a go-to for disputes involving international business and financial transactions. San Francisco’s Scott Nonaka stands out for his experience in Asia-related matters.

Showcasing skills across complex commercial and investment-treaty arbitrations, the group at Squire Patton Boggs maintain a standout high-stakes energy and insurance-backed disputes practice, particularly covering LNG and oil & gas arbitrations. In Cleveland, co-head George Von Mehren draws on deep experience exclusively representing clients in high-value international arbitration. Dividing his time between New York and Washington DC is Stephen Anway, who is well versed in handling cross-border disputes across a gamut of commercial and investment arbitrations. In New York Ali Gursel places a particular focus on sovereign and state-agency representation,  Luka Mišetić is active in sovereign defenses before ICSID and other international tribunals, and John Branson is recommended for handling complex cross-border matters involving foreign governments. Miami-based Raúl Mañón brings dual civil and common law expertise, covering award enforcement and ECT-related matters. New York-based Carlos Guzmán Plascencia is another prominent member of the group.

WilmerHale is competent across complex international commercial and investor-state arbitrations, with particular strength in energy, financial services, telecoms and M&A-related disputes, including IP-heavy cases in the technology and life sciences sectors. The team handles cases involving non-US law and various seats worldwide, acting for both investors and states across Europe, Latin America, the Middle East and Asia. Leading the team in Washington DC is Rachael Kent, who boasts deep experience acting as lead advocate in UNCITRAL, SIAC and LCIA proceedings and also sitting as arbitrator in commercial cases. Danielle Morris is a key name to note for investor–state arbitration and public international law, advising both states and investors. John Trenor draws on longstanding experience in the field, notably handling disputes at the intersection of economic and financial issues.

Renowned for its energy and infrastructure disputes, including Energy Charter Treaty matters, the international arbitration group at Winston Taylor also handles a growing body of Latin America-focused commercial and investor-state arbitrations. In New York, practice head Michael Stepek is very experienced across a variety of arbitration forums through Europe, the Middle East, Asia and the Americas. Also based in New York, Marcelo Blackburn  excels in cross-border disputes, leveraging experience in arbitrations under CC, AAA-ICDR, and LCIA rules, routinely involving oil and gas, infrastructure, and financial services. Houston-based Imad Khan exhibits noted skills in sovereign and state-owned entity disputes, ICSID proceedings, and award and judgment enforcement. Dividing his time between New York, Miami and Washington DC, Gustavo Membiela  is a key port of call for disputes involving Latin American and Spanish parties, often acting for corporates, financial institutions, developers and investors. In Chicago, Ricardo Ugarte leverages his multilingual capacity capable in commercial and investment treaty arbitrations and uses his multilingual capacities to operate across a range of international arbitration matters. Houston’s Laurens Wilkes is a one-stop-shop for arbitrations involving infrastructure, fiduciary duty and product liability disputes.

With a fully integrated global team and a strong US core, A&O Shearman handles large-scale investor-state and complex commercial arbitrations, recognized for sovereign defense, high-value ICSID work and sophisticated cross-border enforcement strategy, particularly in construction, energy, financial services and tech. Leading the group is Christopher Ryan, based in Washington DC, who maintains a strong track record across arbitrations, from construction and natural resources arbitrations to complex post-M&A and IP-driven commercial disputes.

Recommended for its globally integrated handling of high-stakes commercial and investor-state disputes, Baker McKenzie‘s arbitration group showcases notable skills in emerging markets, cross-border enforcement, and multi-jurisdictional proceedings spanning the CIS, Latin America and China. Steering the group is New York-based Andrew Riccio, who is renowned for his expertise in the energy sector, particularly upstream, midstream and downstream oil & gas, alongside renewables-related construction disputes, with additional experience advising financial services and travel industry clients. In Houston, Brendan Cook has a strong reputation for energy and oil & gas disputes. New York-based David Zaslowsky brings expertise across Section 1782 discovery, foreign sovereign immunity issues, and technically complex disputes. In Dallas, Nicholas Kennedy steers his practice towards technology and software-related arbitrations, trade secrets and contractual performance claims. In Chicago Michael Duffy is a key player in private equity disputes, oil and gas claims, and franchise-related arbitrations and Michael McCutcheon is a go-to for construction disputes, technology and energy-related arbitrations. Other key members of the team who handle complex international arbitrations are New York’s Laura Zimmerman and Houston-based, David Baay and Jack Massey.

 

Housing a growing international arbitration practice, Cooley LLP exhibits skills in technology, cryptocurrency and life sciences disputes, acting for blue-chip innovators on high-value ICC, ICDR, ICSID and UNCITRAL matters. In New York, Marc Suskin has a client roster of leading technology and digital economy clients, with particular strength in commercial and investment treaty arbitration, mass arbitration, and award enforcement. Also in New York is Rachel Thorn, who is noted for advising blue-chip and sovereign-adjacent clients in high-stakes international arbitrations. In Los Angeles, Teresa Michaud handles arbitrations for technology-sector clients, advising on platform liability, software, e-commerce and gaming businesses.

Housing a full-service arbitration team, Crowell & Moring LLP is particularly noted for construction and infrastructure disputes, sovereign-facing matters and arbitration-related enforcement and ancillary litigation. Leading the group is highly-experienced Meagan Bachman who has a niche in FIDIC-based disputes, delay and quantum issues, and technically complex breach and negligence claims arising from major projects. Robert Hager is well-versed in representing clients in large-scale infrastructure projects. Ian A. Laird steers his practice towards investment arbitrations, notably those involving NAFTA, CAFTA-DR and the Energy Charter Treaty. Michael Guiffre has a broad workload, involving a spectrum of industries, from construction and aviation to IP. John Murino is another key name in the group.

With a particularly active arbitration practice covering complex commercial and investment treaty disputes, Dentons is recommended for banking, energy, construction and sovereign-related matters, acting for private corporates, state-owned entities and sovereigns. Leveraging a longstanding ICSID and institutional arbitration practice, practice head John Hay sits as counsel and arbitrator, handling disputes for sovereigns and foreign investors. Diora Ziyaeva stands out for her multilingual advocacy, and experience across all major arbitral institutions, steers her practice towards public international law, natural resources and mining-related disputes.

Greenberg Traurig is strengthened by its end-to-end arbitration capability, acting across all major institutions and regularly handling complex FSIA, anti-suit injunction and cross-border enforcement matters for corporates and sovereigns. Daniel Pulecio-Boek is geared to support on investment treaty and international commercial arbitration, acting for sovereigns, corporates and individuals under ICC, ICDR and UNCITRAL rules. Claudia Hartleben is a go-to for clients in the oil and gas, real estate and renewable energy sectors. Tomás Solís is a public international law specialist, and Aurore Nicaud steers her practice towards construction and energy disputes.

Leveraging the bench of its team across major US and Latin American hubs, Holland & Knight’s experience spans ad hoc and arbitrations for subject matters including international trade, energy, finance and M&A. Jointly spearheading the group in Miami is Adolfo Jiménez, a key Latin-America disputes lawyer, who covers sovereign-facing, mining, energy and distribution disputes, and Katharine Menéndez de La Cuesta de la Cuesta, who conducts proceedings in both English and Spanish, acting on complex energy, finance and mining disputes worldwide. Other key members of the group include Dallas-based Andrew Melsheimer, New York-based Marisa Marinelli and Sean C. Sheely.

 

K&L Gates is geared to support on high-value commercial and investor-state disputes, straddling the construction, energy, infrastructure and mining sectors, positioned to regularly acting on high-value ICC, ICSID and ICDR proceedings. The team frequently represents Fortune 100/500 companies, investors and states on bet-the-company disputes across the Americas, Europe and Asia. Steering the team in New York is Matthew Weldon, who is a seasoned practitioner in ICSID proceedings, sovereign defense and award enforcement in US courts, with key specialisms including ICSID Convention and the Foreign Sovereign Immunities Act. Based in Pittsburgh, Thomas Birsic is a sought out in bet-the-company international commercial arbitrations for Fortune 500 clients across a range of industries. In Boston, Thomas Holt is recognized for handling energy, construction and infrastructure arbitrations.

Bringing skills across international commercial and investor-state arbitrations, McDermott Will & Schulte Will draws on in-depth experience across all major arbitration hubs, while also handling enforcement strategies and post-award proceedings. The team brings unique expertise in assisting with cryptocurrency and digital asset arbitrations. In Washington DC, Lisa Richman brings experience in disputes spanning common and civil law jurisdictions, with her client roster encompassing sovereign governments, companies, investors and corporations. David Kiefer has longstanding experience as an arbitration practitioner, steering his practice towards engineering disputes tied to major energy and infrastructure projects. Ena Cefo is a key member in energy and regulated-sector matters, and Maria Cristina Rosales del Prado as particular depth in sovereign dispute and multi-jurisdictional proceedings.

Seeing strong growth in its life sciences, energy and infrastructure arbitration practice, Orrick, Herrington & Sutcliffe fields a team of lawyers active across all major arbitration rules. Practice head Hagit Muriel Elul has a proven track record in bet-the-company international commercial arbitration, regularly acting under ICC, ICDR/AAA and SIAC rules.

With a reputation for high-stakes EPC, industrial engineering and insurance-related arbitrations, Pillsbury Winthrop Shaw Pittman LLP is also well-equipped to handle a broad array of investor-state arbitration and complex commercial disputes, notably in construction, infrastructure and energy, regularly acting for states, investors and market-leading oil and gas clients. Houston-based Richard Deutsch regularly acts as lead counsel and arbitrator under ICC, SIAC, ICSID and UNCITRAL. In Washington DC Michael Jaffe draws on longstanding experience in both international arbitration forums and domestic court proceedings. New York’s Robert Sills is noted for acting in landmark arbitrarily cases and complex joint venture and private equity disputes. Other key members of the team are Washington DC-based Stephan Becker and New York’s June Yeum.

Steptoe LLP operates across energy, infrastructure, banking and sovereign-related disputes, regularly acting for Fortune 100 companies, state-owned enterprises and sovereign states. The practice stands out for its ICSID-heavy caseload and award enforcement work. Leading the team from Washington DC is Steven Davidson, who deals with judgment and award enforcement, sovereign-facing disputes and multi-forum proceedings, and is especially noted for representing Fortune 500 companies in politically sensitive and enforcement-heavy arbitrations. Also in Washington DC is Michael Baratz, a reference for proceedings under ICSID, ICC, AAA and FINRA rules, combining arbitral advocacy with post-award recovery and enforcement strategy worldwide. In New York, Chris Paparella has strong credentials in financial services-related arbitrations and in Los Angeles, Thomas Watson focuses on bet-the-company disputes involving energy, finance and cross-border commercial matters.

Troutman Pepper Locke LLP is noteworthy in high-stakes international commercial arbitration, with key strengths in final-hearing advocacy and cross-examination, regularly appearing under HKIAC, ICDR and other major institutional rules. Typical mandates for the team include construction and infrastructure disputes, IP-driven arbitrations, and insurance and reinsurance matters. The group is jointly steered in Philadelphia by Jeremy Heep, who stands out for antitrust-sensitive and competition-adjacent disputes, across Asia, Europe and offshore jurisdictions for manufacturing, pharmaceutical and industrial clients, and Matthew H. Adler specializes in international and US commercial arbitrations spanning IP, insurance, real estate and finance-related disputes. Other key members are Pittsburgh’s Albert Bates and Washington DC-based Bill O’Neill.

Withers LLP is noted for its wide geographic focus, spanning the Middle East, Africa, Latin America and Asia, covering international commercial and investor–state arbitrations arising from energy, mining and metals, infrastructure and renewables disputes. Heading up the team is New York-based Floriane Lavaud who is a reference in the market for treaty and contract interpretation, state-to-state and sovereign-facing proceedings, placing a notable emphasis on the Middle East. Also in New York, Christopher LaVigne works at the intersection of finance, technology and regulation, with a particular focus on digital assets and crypto-related disputes. San Francisco’s Conte Cicala has a strong niche in maritime, shipping, transportation and trade-related disputes. Kimberly Pallen is a key port of call for brokerage firms, funds and multinational corporates in high-stakes commercial and securities arbitration.