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Mark Popofsky

Mark S. Popofsky, a veteran of the landmark Microsoft trial, heads Ropes & Gray’s antitrust practice. A first-chair trial lawyer, Mark litigates antitrust, intellectual property and other complex business litigation matters. Mark’s litigation practice includes jury trials, class actions (including cartel cases), arbitrations and appeals throughout the federal and states courts.

Mark regularly counsels Fortune 500 companies on the full-range of antitrust matters across numerous industries, including high technology, telecommunications, medical device, pharmaceuticals, aerospace, manufacturing, health care and consumer products. With deep and recognized experience in the intersection of intellectual property and antitrust, Mark advises leading Internet, semiconductor, hardware, software and telecommunications clients on business practices, competitor collaborations and distribution arrangements. He also represents parties in civil and criminal antitrust investigations and transactions before the U.S. Department of Justice and the Federal Trade Commission.

Mark served in the late 1990s as Senior Counsel to Assistant Attorney General Joel Klein in the U.S. Department of Justice’s Antitrust Division, where he played a key role in United States v. Microsoft Corp. Mark previously served in the Division’s Appellate Section, where he argued the landmark victory in United States v. Nippon Paper – which established the extraterritorial application of U.S. antitrust law in cartel cases – and as a Special Assistant U.S. Attorney in Alexandria, Virginia (the “Rocket Docket”), where he tried numerous jury cases to verdict. Following government service, Mark in 1999 was named the youngest partner in the history of a renowned international law firm and served as Chair of its Technology and Competition Group.

CPI Content by Mark Popofsky

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