John M. Majoras Jones Day


John Majoras is a partner and co-lead of Jones Day’s Business & Tort Litigation Practice, he is based in their Washington office. He has more than 20 years of experience in general commercial litigation, with a particular focus on antitrust matters. He also has handled business disputes concerning product liability, hostile corporate takeovers, copyright, tax, contract, and entertainment law. He recently has defended significant civil antitrust cartel challenges, including multidistrict class actions, in the pharmaceutical, credit card, paper, packaged ice, marine hose, and waste hauling industries. In addition to his trial practice, John advises clients on antitrust and FDA regulatory issues, particularly in patent and pharmaceutical matters, and coordinates Jones Day’s competition law litigation practice worldwide. John’s experience includes appearing before state and federal courts, representing clients in governmental investigations, and coordinating defense of worldwide litigation involving competition law issues. As an example, he acted as lead counsel for sanofi-aventis, S.A., one of the principal defendants in worldwide investigations and litigation concerning synthetic vitamins. This wide-ranging representation included responding to investigations by the U.S. Justice Department and enforcement agencies in Europe, Canada, Australia, Mexico, and Brazil. John also led the defense of more than 200 state and federal cases and represented sanofi-aventis before the U.S. Supreme Court in the Empagran case. John is a member of the Antitrust and Litigation Sections of the American Bar Association and is a frequent speaker at national and international antitrust and litigation conferences. He is active in pro bono matters related to unfair housing practices and is involved in attorney recruiting and trial skills training at Jones Day.

2023 Awards


Nominee, 2019 Antitrust Writing Awards: Business, Concerted Practices

Winner, 2016 Antitrust Writing Awards: Business, Private Enforcement

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