Brian P. Quinn


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A member of the firm’s Antitrust and Competition Practice Group, Brian Quinn represents clients in a broad range of commercial and criminal matters, and focuses on complex antitrust litigation and regulatory defense. Brian’s experience spans a broad spectrum of industries, including digital currency, telecommunications, home appliances, consumer electronics, building materials, financial services, defense contracting, consumer goods, healthcare, and transportation services. He has particular expertise at the intersection of antitrust and intellectual property law, and has counseled multiple clients on licensing and FRAND issues in the standard-essential patent context.

Brian has represented clients in federal district and appellate courts, and in the United States Supreme Court. He has served as the principal drafter of numerous dispositive motions in federal district court, authored merits briefs and motions in the U.S. Courts of Appeals, and first-chaired the depositions of fact and expert witnesses in high-stakes litigation. Most recently, Brian argued a set of Daubert motions and took the direct and rebuttal examinations of an expert economist in a two-week bench trial in federal district court.

Previously, Brian was a key member of the team that won summary judgment for Samsung after eight years of litigation in multi-district and class action proceedings, defeating antitrust conspiracy claims seeking more than $1 billion in actual damages and $3 billion in trebled damages. American Lawyer selected that victory as a finalist for its “Global Litigation/Dispute Resolution of the Year” award in 2018.

Brian maintains an active pro bono practice. He has litigated habeas corpus cases on behalf of pro bono clients in federal district courts, the US Courts of Appeals for the Fourth and Eleventh Circuits, and in the United States Supreme Court.

Prior to joining O’Melveny, Brian served in the White House and at the Office of the US Trade Representative.


Bar Admissions

  • District of Columbia
  • Virginia

Court Admissions

  • US District Courts for the Eastern and Western Districts of Virginia
  • District of Columbia Court of Appeals
  • US Courts of Appeals for the Fourth, Seventh, Ninth, and Eleventh Circuits
  • Supreme Court of Virginia


  • Stanford University, J.D.: Senior Online Editor, Stanford Law Review
  • Stanford University, B.A., American History

Professional Activities


  • “The Hold-Up Tug-of-War—Paradigm Shifts in the Application of Antitrust to Industry Standards,” Competition (December 11, 2018)


  • ABA Section of Antitrust Law