Sheppard, Mullin, Richter & Hampton LLP is well-positioned to represent domestic and multinational clients in antitrust investigations and prosecutions by the FTC and DOJ. The team has played a pivotal role in recent monopoly investigations involving big tech companies and in facilitating significant M&A transactions for its clients. Co-chair Leo Caserio’s litigation expertise has been instrumental in securing favorable outcomes in complex conspiracy trials. Fellow co-chair Ann O’Brien brings extensive experience in antitrust and white-collar crime investigations, including representing clients in federal criminal jury trials. Both attorneys are based in Washington DC.
Legal 500 Editorial commentary
Key clients
- National Pipe & Plastics
- Progressive Insurance
- Essex Property Trust
- Hartford HealthCare Corporation
- Export Packers Company
- Cyient
- The Reynolds and Reynolds Company
- JRK Residential Group
- CalPortland Company
Work highlights
Representing National Pipe & Plastics in a consolidated civil antitrust class action in the Northern District of Illinois.
Representing Progressive Insurance in the defense of antitrust litigation.
Representing Essex in a class action alleging that its use of software provided by Yardi violates antitrust law.
Practice head
Leo Caseria
Ann O'Brien
Other key lawyers
Helen Eckert
Joy Siu
Lindsey Collins
Jake Walker