Antitrust Litigation_2026

USA Trends and Developments

Trends and Developments Contributed by: William Lavery, Joseph Ostoyich, Dodi Allocca and Timothy Lyons Clifford Chance LLP

Clifford Chance LLP brings decades of first-chair antitrust trial experience, having tried bench and jury trials against the Department of Justice, the Federal Trade Commission and private parties. The team has defeated class certification, won dozens of cases on summary judgment and on the pleadings, and excluded opposing experts on Daubert grounds in numerous monopolisation, conspiracy, unfair com - petition and price discrimination cases, including a jury verdict for Caterpillar Inc against conspiracy and

boycott claims. The group boasts significant merger clearance capabilities and has tried several merger challenges under Section 7 of the Clayton Act, and regularly advises Global 1,000 companies on an - titrust compliance and regulatory issues. The team includes lawyers with senior experience in private practice and government enforcement roles. The US practice is an integral part of Clifford Chance’s global antitrust group of more than 200 lawyers across the Americas, Europe, the Middle East and Asia-Pacific.

Authors

William Lavery is the managing partner of Clifford Chance in the Washington, DC office and a member of the firm’s US antitrust litigation group. An accomplished trial lawyer with 20 years of antitrust litigation

Joseph Ostoyich is the head of the US antitrust litigation practice at Clifford Chance in Washington, DC. He has been lead counsel in dozens of “bet-the-company” class action and individual price fixing, monopoli -

experience, Will specialises in high-stakes civil and criminal antitrust matters and government investiga - tions, regularly representing clients before the US Department of Justice, the Federal Trade Commis - sion and federal courts nationwide. Many of the world’s largest companies rely on his strategic guidance in complex “bet-the-company” litigation, investigations and merger challenges. His track record has earned consistent recognition as a leading antitrust practitioner in prominent national rankings. Timothy Lyons is an associate in the antitrust group at Clifford Chance in Washington, DC. He advises clients on all aspects of the US antitrust and com - petition laws, including regulatory review of mergers and acquisitions, investigations, litigation and dis - pute resolution, and business compliance, and has regularly represented clients before the US Depart - ment of Justice and the Federal Trade Commission.

sation, merger challenges and other antitrust matters, and his trial prowess has earned him recognition for “excellence among American litiga - tion and trial counsel”. Joe is a Fellow of the invita - tion-only Litigation Counsel of America, a trial lawyer honour society limited to 3,500 lawyers (<0.5%) nationwide. He has repeatedly received high rank - ings from Chambers and Partners and other publi - cations. Dodi Allocca is an associate in the antitrust group at Clifford Chance in Washington, DC. Her prac - tice focuses on advising clients on all aspects of antitrust law, including civil enforcement matters in federal court, and investigations and proceed - ings before federal agencies. She has experience in defending corporations in complex cases against allegations of price fixing, market and customer allocation, group boycott, monopolisation, and other anti-competitive activity. She also maintains an active pro bono practice representing individuals in Section 1983 excessive force claims in federal court.

236 A NTITRUST LI T IGATI O N 2026

CHAMBERS.COM

Powered by