Ross Demain advises clients in complex antitrust matters, including government investigations; mergers and acquisitions, joint ventures, and other transactions; litigation; compliance; and trade association activities.
He has represented clients in civil and criminal investigations before the Department of Justice, Federal Trade Commission, and state antitrust enforcers, and as both plaintiffs and defendants in private antitrust litigation. Mr. Demain also regularly helps clients assess and comply with their obligations under the HSR Act.

Mr. Demain has significant experience helping clients achieve positive outcomes across a variety of industries and sectors, including technology, electronics, cable, broadcast, industrial products, energy and natural resources, defense, pharmaceuticals, medical devices, sports, and financial services.

Recent litigation victories in which Mr. Demain has been involved include obtaining dismissal of an antitrust claim in a precedent-setting case at the International Trade Commission that confirmed that the antitrust injury requirement applies to claims brought under Section 337 (ITC 2018); achieving one of the first dismissals of a corporate defendant on jurisdictional grounds in the sprawling In re Automotive Parts Antitrust Litigation, 2013 U.S. Dist. LEXIS 80337 (E.D. Mich. 2013); attaining dismissal of a purported class action antitrust suit brought by retired NFL players alleging a conspiracy to restrain a market for the sale of their images and likenesses, Washington v. National Football League, 2012 U.S. Dist. LEXIS 89401 (D. Minn. 2012); and obtaining an early dismissal of novel resale price maintenance claims brought in federal court under New York's Donnelly Act. Worldhomecenter.com, Inc. v. KWC America, Inc., 2011 U.S. Dist. LEXIS 104496 (S.D.N.Y. 2011).