Antitrust lawyers

Leiv Blad

Leiv Blad focuses on antitrust investigations and litigation, mergers and acquisitions, and class action and multiparty litigation. He represents clients in government investigations and private litigation raising price fixing, monopolization, and intellectual property issues in various industries, including the financial services, high technology, pharmaceutical, and energy industries.

Morgan, Lewis & Bockius LLP

Leo Caseria

Leo Caseria defends companies in complex antitrust litigation. The co-leader of the Antitrust and Competition practice group, he also helps businesses navigate through antitrust and Hart-Scott-Rodino (HSR) issues in mergers and acquisitions. Representing clients nationwide from the Washington, D.C. and Los Angeles offices, Leo has led the defense of antitrust litigation involving alleged conspiracies and monopolization, through motions practice and trial. He has also led and supervised everything from HSR filing through Second Request for merging parties.

Sheppard

Leon Greenfield

Partner

WilmerHale

Leonardo Canabrava

Partner

Madrona Advogados

Leslie Overton

Partner and Chief Workplace Culture & Opportunity Officer

Axinn Veltrop & Harkrider

Lewis R. Clayton

Click here for attorney bio.

Paul, Weiss, Rifkind, Wharton & Garrison LLP

Lexi Michaud

Lexi Michaud's practice focuses on antitrust aspects of public and private M&A and joint ventures. She routinely assists clients with merger clearance under the Hart-Scott-Rodino (HSR) Act, investigations under federal antitrust laws, and antitrust compliance concerns. Lexi collaborates with clients to understand and mitigate antitrust risks and successfully complete transactions in a wide range of industries, including technology and software, healthcare, consumer products, transportation, industrials, financial services, and media.

Fried, Frank, Harris, Shriver & Jacobson LLP

Lillian Grossbard

Lillian S. Grossbard has a broad litigation practice, with a particular focus on antitrust, commercial disputes and other advisory matters.

Cravath, Swaine & Moore LLP

Lindsay Johnson

Partner - Litigation and Investigations

Bryan Cave Leighton Paisner

Lindsey Champlin

Lindsey Champlin, Vice Chair of the firm’s Global Antitrust & Competition Practice, counsels US and international companies on a range of antitrust issues, with a particular focus on securing antitrust clearances for all types of M&A transactions. Lindsey was recently named to Global Competition Review’s 40 Under 40 honor roll. Drawing on her vast cross-border experience, Lindsey assists leading companies on their most significant antitrust matters, such as: Merger matters, including complex HSR filings and Second Request substantial compliance Merger remedy negotiations Merger litigation opposite the DOJ and FTC and merger arbitration Antitrust conduct and consent decree compliance investigations She represents clients doing business in diverse industries, from the energy and automotive sectors to industrial equipment and machinery, retail, advertising, and live entertainment. Lindsey leverages the firms’ global platform to help clients navigate overlapping multijurisdictional antitrust approvals from competition authorities around the world, involving the US Department of Justice (DOJ), the US Federal Trade Commission (FTC), the European Commission, the Canadian Competition Bureau, Mexico’s Comisión Federal de Competencia Económica, and China’s State Administration for Market Regulation. She regularly counsels clients on competitor collaborations, information sharing, and sales and marketing practices. Lindsey also conducts economic analyses of mergers and other complex antitrust issues. Lindsey maintains an active pro bono practice and served on Latham’s Pro Bono Committee. She has represented the Polaris Project, an anti-human trafficking organization; a tenant association in litigation involving housing code violations in Washington, D.C.; elder law clients; children in individualized education program proceedings against DC Public Schools; and guided clients through asylum applications. Lindsey regularly writes and presents on topics related to antitrust law, including for law schools, academic journals, and the American Bar Association. Lindsey serves as a member of the steering committee for GCR Antitrust Law Leaders Forum and as a member of W@Competition, an organization for women competition professionals.

Latham & Watkins

Linton Mann III

Linton Mann III is a Partner in Simpson Thacher’s Litigation Practice. Linton represents clients in a broad range of high-stakes litigation and investigation matters including securities, shareholder derivative disputes, class actions, antitrust and complex commercial disputes. Linton is Co-Chair of the Firm’s Recruiting and United for Justice Committees. Linton is consistently named a “Next Generation Partner” by The Legal 500, where sources say he “stands out from his peers for his securities work.” Recognized among Crain’s “40 Under 40,” Linton has also been named a “Rising Star” by the New York Law Journal, Law360 and Euromoney, and is a repeat honoree on Benchmark Litigation’s “40 & Under List.” He was also recognized among the “Best LGBTQ+ Lawyers Under 40” for 2022 by the National LGBTQ+ Bar Association. Linton is the Chair of the Board of Trustees for Uncommon Charter Schools New York City, which oversees twenty-four public charter schools in Brooklyn, New York. He is also the Chair of the Board of Directors of Manhattan Legal Services, a program of Legal Services NYC, the largest provider of pro bono civil legal services in the country. In 2023, Linton was one of four recipients of the Pro Bono Service Award from the Legal Services Corporation.

Simpson Thacher & Bartlett LLP

Lisa Jose Fales

Venable LLP

Lisa Pirozzolo

Partner

WilmerHale

Lisa Rumin

Lisa P. Rumin focuses her practice on antitrust, regulatory and litigation matters. She assists clients across a variety of industries and has represented numerous clients in the healthcare, pharmaceutical, and biotechnology industries. Lisa advises clients on mergers and acquisitions, including obtaining clearance from the Federal Trade Commission (FTC) and Department of Justice (DOJ), as well as counsels clients on issues regarding antitrust compliance, pricing, and distribution. She also counsels clients on cartel prosecutions and defenses, including government investigations and the initiation and defense of civil class action litigation. Lisa is experienced in areas of e-discovery, document review and production for investigations before the FTC, DOJ and state attorneys general office. In addition to her antitrust and competition work, Lisa maintains an active pro bono practice. She has represented clients in asylum, sexual harassment and employment discrimination matters, as well as assisted Lawyers Without Borders on projects aimed at strengthening legal training and enforcement in various countries. While in law school, Lisa was the notes and comments editor for the Wake Forest Law Review. She served as a judicial intern to the Honorable Calvin E. Murphy in the North Carolina Business Court.

McDermott Will & Schulte

Lisl Dunlop

Partner

Axinn Veltrop & Harkrider

Logan M. Breed

Partner

Hogan Lovells US LLP

Lorena Pavic

Partner of Carey and co-head of the firm’s Antitrust and Regulated Markets Group.

Carey

Lucie Cohen

Partner

Nelson Mullins Riley & Scarborough LLP

Luigi Goglia

Founding Partner - Lead of IP Department

LGV Avvocati Studio Legale

Luka Jesenko

Managing Associate

ODI Law Firm

Luís Miguel Romão

Partner

CMS

Lynn Neuner

A nationally-renowned trial lawyer specializing in securities, shareholder, insurance, complex commercial and false advertising disputes. Representations include: Travelers in a trial victory related to Johnson & Johnson’s massive talc-related bankruptcy proceedings, which involved over $9 billion in proposed trust funding; TD Bank in historic litigation related to Allen Stanford Ponzi scheme; Pfizer in Cerevel securities litigation, Viatris securities litigation, and numerous indemnity disputes; Bayer in a false advertising dispute challenging promotional claims regarding J&J and Janssen Biotech’s prostate cancer drug ERLEADA®; Lloyd’s and RSA in three-week jury trial in connection with a business interruption and property damage claim; Frontdoor in securing a preliminary injunction after a full evidentiary hearing enforcing a nationwide non-compete in expedited proceedings; Olon S.p.A. in breach of contract and fraud dispute against Perfect Day concerning a cross-border manufacturing and investment arrangement; Chubb, Axa XL, and Swiss Re in multi-jurisdiction aviation insurance litigation related to numerous airplanes allegedly grounded in Russia after the invasion of Ukraine; TD Bank in Ponzi scheme cases involving TelexFree in Massachusetts and National Realty Investment Advisors in New Jersey; Helen Frankenthaler Foundation in obtaining precedent-setting dismissal of dispute brought by former director; co-executors of estate of former CEO of Scholastic Inc. in various trust and probate matters; Hovnanian in landmark securities case regarding credit default swaps; Travelers in centi-million-dollar pollution coverage action; Bayer in emergency court proceeding that ended competitor’s advertising campaign in two weeks; Weight Watchers in large securities class action and related derivative suits; Bayer in advertising challenges regarding Claritin, Aleve and Maty’s Healthy Products; Ziegler Family businesses in shareholder disputes; and multiple confidential international and U.S. arbitrations. Devotes significant pro bono counsel to U.S. veterans, including work on historic ruling allowing veterans to bring class actions in Veterans Court and winning a 20-year dispute to secure disability benefits for a veteran following a VA appeal.

Simpson Thacher & Bartlett LLP

MIchael Hoffman

Partner - Litigation and Investigations

Bryan Cave Leighton Paisner

Manabu Eiguchi

Partner

Iwata Godo