About

Provided by Sheppard, Mullin, Richter & Hampton LLP

Sheppard delivers practical advocacy in complex antitrust and competition matters worldwide, from cartel investigations to antitrust litigation to merger reviews. With former DOJ, FTC and DG Comp officials, global reach and proven trial success, we deliver strategic antitrust solutions for complex matters.

Recognized as a top practice for antitrust with standout strengths in cartel matters, civil litigation and class action defense and merger control, we are known for offering clear and pragmatic advice.

We help companies and executives contain business risk by anticipating government tactics, moving quickly to identify early resolution opportunities and advancing business priorities. When litigation is necessary, our team’s record of court victories sets us apart.

Our lawyers guide mergers and acquisitions through DOJ and FTC reviews, manage Hart-Scott-Rodino (HSR) filings and coordinate multi-jurisdictional matters for leading clients in technology, healthcare, life sciences, energy, financial services, aerospace and defense, media and consumer products. We play central roles in groundbreaking cases involving big tech, digital platforms, AI, data-driven pricing and healthcare antitrust challenges.

Chambers Review

Provided by Chambers

Antitrust - California

4
Band 4

What the Team is Known For

Sheppard, Mullin, Richter & Hampton LLP is recognized for its handling of antitrust class actions, federal investigations and merger clearance issues. The firm has a strong cartel practice, as well as notable experience representing companies in the healthcare sector. The firm offers further expertise advising companies on unfair competition matters related to technology licensing. Sheppard Mullin draws from its experience on a global platform, especially in Europe and Asia. The team demonstrates additional expertise in advising on IP-related antitrust issues.

Notable practitioners

Leo Caseria is a key contact.

Members

Provided by Sheppard, Mullin, Richter & Hampton LLP

Ann O'Brien

Head of Department

Jared Nagley

Leo Caseria

Head of Department

Clients

Provided by Sheppard, Mullin, Richter & Hampton LLP

Blue Shield of California

CalPortland Company

Cyient

Duke University

Hartford HealthCare

Prospect Medical Holdings

VillageMD

Industries

Provided by Sheppard, Mullin, Richter & Hampton LLP

Aerospace

Automobiles and Parts

Construction Materials

Energy

Food and Drink Producers

Healthcare

Multifamily

Technology