Stephen Medlock

Mayer Brown

Contact Details

Mayer Brown


Steve Medlock is an experienced antitrust litigator who brings dedication, intensity, and commercial commonsense to his representations of Fortune 500 clients, whether navigating through complex multidistrict class actions or successfully defending clients in grand jury investigations. Clients place their trust in Steve to develop unique and complex antitrust arguments for both defendants and plaintiffs. Steve’s unique mix of plaintiff and defense-side experience allows him to see the issues that exclusive defense-sided practitioners miss in a full range of antitrust matters, including corporate counseling, internal investigations, civil non-merger and criminal cartel investigations, and litigation. In these areas, Steve is known for providing practical advice that business executives can digest. Steve has secured victories for clients in major antitrust class actions and B2B antitrust cases alleging monopolization and attempted monopolization at critical stages, including winning dismissal prior to discovery and prevailing at summer judgment. His depositions and briefs have been quoted in the The New York TimesThe Washington Post, and The Atlantic.

Steve is a recognized as a part of the next generation of leadership in the antitrust bar. He currently serves as a Vice Chair on the Exemptions and Immunities Committee of the American Bar Association’s Section of Antitrust Law. He is also the co-editor of the third edition ABA’s Noerr-Pennington Handbook.

Behind the scenes, Steve is a trusted antitrust advisor and advocate in antitrust compliance matters, with a particular focus on clients in the food, beverage, consumer packaged goods, automotive, and high technology industries.

Steve maintains an active high-impact pro bono practice. He was the lead trial counsel on a challenge to political gerrymandering in Maryland and is currently co-lead counsel in a challenge to the U.S. government’s policies concerning asylum seekers that are attempting to enter the U.S. at ports of entry on the U.S.-Mexico border.


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