Mark Ryan

Mark Ryan is head of Mayer Brown’s global antitrust and competition group. He recently rejoined Mayer Brown after serving as the first-ever Director of Litigation for the Justice Department’s Antitrust Division. In that position, Mark was responsible for overseeing and strengthening the division’s litigation enforcement efforts. He participated in litigation on behalf of the United States, including acting as lead trial lawyer in the e-books price-fixing litigation in the Southern District of New York and as a member of the trial team that successfully sued a major credit card issuer in the Eastern District of New York over anti-steering rules contained in merchant agreements.