LAWYER PROFILE
Stephen Medlock

Stephen Medlock

USA 2026

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About

Provided by Vinson & Elkins LLP

Practice Areas

Steve Medlock is an experienced antitrust litigator who brings dedication, intensity, and commercial common sense 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 summary judgment. His depositions and briefs have been quoted in the The New York Times, The Washington Post, The Atlantic, and several other major media outlets.

Steve actively defends his clients in antitrust matters that are among the largest and most complex—including class actions, multidistrict litigation, and government investigations. While other litigators in multi-defendants actions sign briefs and sit in the back of the courtroom, Steve does not babysit cases and push paper. He argues motions, cross-examines keys witnesses, makes opening and closing statements, and defends the testimony of key executives. Because he routinely practices in the highest-profile antitrust cases, Steve also knows how to focus on what really matters in cases with thousands of moving parts, saving his clients time and money.

Steve is a recognized as a part of the next generation of leadership in the antitrust bar. He currently serves as the 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 American Bar Association’s Noerr-Pennington Handbook.

Steve is also a passionate advocate for pro bono clients in several prominent cases. He obtained full plaintiff victories at the summary judgment stage in path-breaking cases challenging partisan gerrymandering and the restriction of asylum rights at U.S. ports of entry. He also obtained systemic policing reform in a community where officers inhibited the ability of African American voters to access early voting locations in advance of the 2020 Presidential election. In 2023, he was received the American Immigration Council’s Immigration Impact Award for his work in Al Otro Lado v. Mayorkas, an asylum-rights litigation campaign.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Antitrust: Litigation Specialists - District of Columbia

Band 5
Band 5

Individual Editorial

Stephen Medlock has a broad antitrust practice defending clients in real estate, health care and financial services sectors. He regularly appears in class actions and agency investigations alleging price-fixing and market allocation.

Strengths

Provided by Chambers

  • Stephen is a really reliable lawyer.

    Antitrust: Litigation SpecialistsChambers Guide to the USA
  • Stephen is an amazing lawyer on complex litigation. He is a walking encyclopedia of antitrust law.

    Antitrust: Litigation SpecialistsChambers Guide to the USA

Ranked Individuals at Vinson & Elkins LLP (174)

California

California: Southern

Colorado

District of Columbia

New York

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