
Gibson, Dunn & Crutcher LLP handles a range of antitrust and competition matters, with a focus on litigation, investigations and merger reviews. The team acts in government enforcement actions, class actions, cartel matters and regulatory reviews, and has experience managing large, multi-jurisdictional disputes and sensitive investigations. Its work spans trial and appellate litigation as well as advisory mandates. The practice is co-chaired globally by Rachel Brass in San Francisco and Cynthia Richman and Kristen C. Limarzi in Washington, DC, each of whom has experience in antitrust litigation and regulatory matters, including cases involving technology and heavily regulated industries. Also based in DC, Stephen Weissman, a former deputy director of the FTC’s Bureau of Competition, contributes substantial enforcement expertise. Daniel G. Swanson, who previously co-led the practice, brings trial and appellate experience across US and EU competition law from Los Angeles. Josh Lipton further supports the DC team’s work in investigations, merger control and consumer protection matters.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Client satisfaction: NPS ®
Key clients
- Apple, Inc.
- Matson Navigation Company
- Daimler Truck North America
- T-Mobile
- National Football League (NFL)
- RealPage
- UnitedHealth Group
- HomeServices of America
- PepsiCo, Inc.
- Chevron USA Inc.
- Amgen Inc.
- Baxter International Inc. (Hill-Rom Holdings, Inc.)
Work highlights
Representing Apple when private plaintiffs filed 44 antitrust class actions, which were consolidated into an MDL, after the DOJ and state AG lawsuit against Apple in March 2024.
Defends RealPage in groundbreaking antitrust cases—the first globally to challenge “algorithmic pricing.”
Represents UnitedHealth Group and subsidiaries OptumRx and Emisar Pharma Services in major antitrust and regulatory matters, including defending the FTC’s Section 6(b) market study.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Rachel Brass; Cynthia Richman; Kristen Limarzi
Other key lawyers
Stephen Weissman; Scott Hammond; Joshua Lipton; Kristen Limarzi; Jeremy Robison; Daniel Swanson; Samuel Liversidge; Jay Srinivasan; Christopher Dusseault; Caeli Higney; Ashley Johnson; Gregg Costa; Betty Yang; Liz Ryan; Michael Perry; Eric Stock



