Antitrust lawyers

Mark Popofsky

Partner

Ropes & Gray LLP

Mark Rizik

Winston Taylor

Mark Rosman

Mark is a first-chair trial lawyer at Proskauer, with more than 30 years of experience litigating in both the public and private sectors. Mark is a seasoned litigator, representing companies and individuals in connection with national and international antitrust and criminal matters, including cartel defense, criminal enforcement investigations, and merger and civil non-merger cases. He also has extensive experience handling Foreign Corrupt Practices Act (FCPA) violations, fraud investigations, bribery, obstruction of justice and kickbacks. Mark has served as lead lawyer in many prominent government enforcement actions as well. Mark previously served as Assistant Chief of the Washington Criminal Section in the DOJ’s Antitrust Division, where he oversaw teams of trial attorneys and law enforcement agents who prosecuted numerous cartel cases and related violations. He also served as Special Assistant to the Directors of Enforcement in the Antitrust Division’s Office of Operations, where he assisted Directors and Deputy Assistant Attorneys General in criminal matters and merger and civil non-merger cases. Mark also worked on many cases involving amnesty, recommended indictments, plea agreements, immunity, investigations, and case development. Mark is a prolific speaker and author on antitrust law topics, including cartel investigations and enforcement, as well as criminal and civil litigation and investigations.

Proskauer Rose LLP

Mark Selwyn

Partner

WilmerHale

Mark Weiss

Mark Weiss is a partner in the Firm's North America Antitrust & Competition Practice Group. He is an experienced litigator and counselor with proficiency in antitrust litigation, class-action defense, federal multi-district litigation, and no-poach defense. Mark has vigorously and tirelessly represented clients in a variety of industries including manufacturing, mining, high-tech industries, banking, defense contracting, aerospace, and energy. As an experienced antitrust counsel, Mark has also conducted cartel investigations and internal compliance reviews, and regularly provides antitrust advice on a broad range of non-litigation matters, including sales and distribution advice, antitrust compliance, competitive merger analysis, and merger clearance strategy. Prior to joining Baker McKenzie, Mark worked at another global law firm with a focus on class-action antitrust litigation, including defending a global electronics manufacturer from price-fixing and collusion claims, defending a major global financial institution from antitrust collusion and boycott claims, and defending a large government defense contractor from claims alleging illegal no-poach agreements.

Baker McKenzie

Markus Tichy

Markus studied Political Science and Law at the University of Münster and the Universidad del Rosario in Bogotá, Colombia. Additionally, he completed a three-year course of specialized foreign language training in Spanish law. He then worked as a legal research assistant at a leading German law firm specializing in public procurement law. As part of his legal clerkship at the Higher Regional Court of Düsseldorf, Markus worked at a renowned law firm specialising in construction law in the field of public construction law, at a boutique law firm specializing in environmental and planning law, and at the Federal Ministry of Justice (Department for Public Procurement Law and Antitrust Law). Markus has been admitted to the bar since 2025. His practice focuses on advising national and international companies and public authorities on all aspects of public commercial law.

avocado rechtsanwälte

Martha Wang

Associate

Orrick, Herrington & Sutcliffe LLP

Martino Sforza

Partner

Norton Rose Fulbright

Mary Lehner

Partner

Freshfields

Maryam Hosseini Bonilla

Senior Counsel

AMERELLER

María Cristina Fábrega

Partner

Arias

Masafumi Shikakura

Masafumi Shikakura is a counsel and leads Clifford Chance’s antitrust practice in Tokyo. He specialises in antitrust law and foreign investment regulations and advises domestic and international companies on Japanese anti-monopoly law as well as Japanese regulations on foreign direct investments and sanctions. He handles multi-jurisdictional merger filing analyses and foreign direct investment filing analyses and coordination with local counsel in various jurisdictions for many transactions. Masafumi has also gained extensive experience in M&A transactions, in particular cross-border acquisitions and joint ventures. He has advised clients in power and energy, technology, healthcare and various industrial sectors.

Clifford Chance (Gaikokuho Kyodo Jigyo)

Massimo Merola

Partner Massimo Merola specialises in EU law (with specific focus on state aid, litigation before EU courts, including preliminary rulings, customs law, state-owned undertakings and public procurement), competition law (mergers, antitrust, abuse of dominance) and represents clients before the European Commission, national authorities and European courts. He also provides in- and out-of-court assistance, at national and European level, to governments, public authorities and blue-chip companies operating in a wide range of sectors. He is managing partner of the Brussels office, supervisor of the EU practice and member of the Environmental Sustainability, Infrastructure, Energy & Ecological Transition, , Public International Law & Economic Diplomacy and Restructuring & Insolvency Focus Teams. He is also member of the Golden Power Task Force and the Competition Litigation Task Force.

BonelliErede

Matthew Adler

Partner

Baker Botts L.L.P.

Matthew J. Moore

Matthew Moore, one of the nation’s top patent trial attorneys and former Global Chair of the Intellectual Property Litigation Practice and Technology Industry Group, represents leading companies in existential litigation and other high stakes patent disputes. Recognized as one of the country’s Top 10 Influential Intellectual Property Lawyers, Matthew represents Fortune 100 enterprises and tech-forward companies in their most complex IP litigation matters involving: Patents Trade secrets Antitrust and competition False advertising He combines extensive trial and appellate experience with his sophisticated technical background to distill complex science and law into actionable advice. Matthew has litigated over 200 cases in venues across the US, including the International Trade Commission (ITC). He has also managed many global patent disputes involving cases around the world, including in Germany, the Netherlands, the UK, Brazil, China, and Japan. Matthew guides clients across a broad range of sectors, including semiconductors, electrical circuits, telecommunications, medical devices, software, optics, automotive technologies, materials, and chemicals. Industry publications often report on Matthew's litigation prowess, including The American Lawyer, which highlighted the five wins he achieved in one single day and Matthew's “knack for invalidating patents.” The Recorder profiled Matthew for his “patent hat trick” after winning three cases at the Federal Circuit in just one week for Capital One, Freddie Mac, and Volvo. The American Lawyer further praised his IP/antitrust litigation work, noting that his “interesting and aggressive” trial strategy could “reset the playing field on patent litigation.” Before joining Latham, Matthew played professional lacrosse for the Philadelphia Wings and won three NCAA Lacrosse Championships at Syracuse University. Matthew is admitted to practice before the US Supreme Court; the US Court of Appeals for the Federal Circuit; and the US District Courts for the Eastern District of Texas, the Western District of Wisconsin, and the Eastern District of Michigan.

Latham & Watkins

Matthew Kent

Fortune 100 companies trust Matthew to prosecute and defend global price-fixing cartels and other complex disputes. The counsel he provides allows his clients to minimize risk while achieving their business objectives. Matthew is former co-chair of Alston & Bird’s Antitrust Team, focusing on bet-the-company antitrust litigation and counseling. Matthew and his team have recovered nearly $1 billion in settlements for clients. Matthew prosecutes and defends global price-fixing cartels for Fortune 100 companies and has extensive experience with the competition issues at the forefront of the pharmaceutical industry. He advises clients on antitrust issues related to joint ventures and mergers and acquisitions, including filings under the HSR Act and international premerger notification regimes. Matthew assists clients with substantive merger reviews by the U.S. Department of Justice, the Federal Trade Commission, and foreign competition authorities in a host of industries. He also provides ongoing antitrust counseling to clients that enables clients to minimize antitrust risk while achieving their business objectives.

Alston & Bird LLP

Matthew Reilly

Matt Reilly is a partner in the Washington, D.C., office of Kirkland & Ellis LLP. Matt is one of the preeminent antitrust practitioners in the country. Matt’s practice focuses on a wide range of antitrust matters, including antitrust litigation, complex transactions and antitrust counseling and government investigations. He is regularly relied on by major clients to navigate the approval process for the most complex, high-profile transactions, and to prepare to litigate mergers that face steep resistance from the agencies.

Kirkland & Ellis LLP

Matthew Wheatley

Matthew Wheatley is a partner in the Litigation Practice Group in the Washington, D.C., office of Kirkland & Ellis LLP. His practice focuses on antitrust and competition.

Kirkland & Ellis LLP

Matthias Schrader

Matthias Schrader is a partner and heads Willkie’s Litigation Practice Group in Germany. In addition to domestic and international litigation and arbitration matters, his practice focuses on compliance and regulatory matters across a broad spectrum of industries. As a litigator, Matthias acts as counsel to both claimants and respondents in a wide variety of commercial litigations and arbitrations before various courts and arbitral tribunals under the auspices of the world’s leading arbitral institutions (ICC, LCIA, SIAC, DIS, etc.). He has successfully negotiated out-of-court settlements of complex disputes for a variety of commercial and private clients. Furthermore, he has represented sovereigns in litigations as well as international investment arbitrations. Matthias also acts as arbitrator in high-stakes commercial arbitrations. Matthias regularly advises clients on matters of European and German anti-money-laundering and anti-terrorism-financing regulations, sanctions, financial markets compliance, including allegations of insider trading and market manipulation, antitrust and State-aid law and day-to-day compliance issues. He represents a diverse client base including health care, chemicals, natural resources, energy and mining, consumer goods and retail, high-tech, automotive, real estate and financial institutions. In addition to in-court representation, Matthias has acted for clients towards state prosecutors, regulatory authorities and public consumer associations on matters of proper business conduct and fair competition.

Willkie Farr & Gallagher LLP

Matthias Schrader

Matthias Schrader is a partner and heads Willkie’s Litigation Practice Group in Germany. In addition to domestic and international litigation and arbitration matters, his practice focuses on compliance and regulatory matters across a broad spectrum of industries. As a litigator, Matthias acts as counsel to both claimants and respondents in a wide variety of commercial litigations and arbitrations before various courts and arbitral tribunals under the auspices of the world’s leading arbitral institutions (ICC, LCIA, SIAC, DIS, etc.). He has successfully negotiated out-of-court settlements of complex disputes for a variety of commercial and private clients. Furthermore, he has represented sovereigns in litigations as well as international investment arbitrations. Matthias also acts as arbitrator in high-stakes commercial arbitrations. Matthias regularly advises clients on matters of European and German anti-money-laundering and anti-terrorism-financing regulations, sanctions, financial markets compliance, including allegations of insider trading and market manipulation, antitrust and State-aid law and day-to-day compliance issues. He represents a diverse client base including health care, chemicals, natural resources, energy and mining, consumer goods and retail, high-tech, automotive, real estate and financial institutions. In addition to in-court representation, Matthias has acted for clients towards state prosecutors, regulatory authorities and public consumer associations on matters of proper business conduct and fair competition.

Studio Legale Delfino e Associati Willkie Farr & Gallagher LLP

Małgorzata Szwaj

Partner, Head of Competition (Poland)

Addleshaw Goddard Wisniewski Dzianachowski Schulz i Wspólnicy sp.k.

Meaghan Thomas-Kennedy

Meaghan Thomas-Kennedy advises clients on high-stakes antitrust litigation matters, drawing on her experience both as in-house counsel and representing clients in multiple industries. Meaghan helps clients navigate a range of antitrust matters, including: Government monopolization investigations and litigation Conduct investigations Complex class actions, particularly in relation to information exchange and algorithmic pricing Merger challenges brought by the Department of Justice (DOJ) and Federal Trade Commission (FTC) Existential business disputes Meaghan returns to Latham with a wealth of experience from her previous role at Apple, where she led the strategy for the company’s North American antitrust litigation docket, was responsible for the company’s highest-risk antitrust cases, and provided strategic counsel on a broad range of complex litigation matters. Meaghan draws on her in-house counsel perspective to advise tech clients on the design and launch of new products, to navigate the intersection of intellectual property and competition law, and to craft docket-wide litigation management strategies. Complementing her commercial work, Meaghan serves on the Board of the First District Appellate Project in Oakland, California and is an active member of the American Bar Association Antitrust Section and the California Lawyers Association.

Latham & Watkins

Megan E. Jones

Partner

Hausfeld LLP

Megan Granger

Partner

Weil, Gotshal & Manges LLP