Stacey Anne Mahoney’s practice includes all aspects of antitrust law. In her antitrust litigation practice, she represents clients as plaintiffs and defendants in federal and state courts throughout the US, in cases involving restraints of trade, monopolization, tying, exclusive dealing, price discrimination, false advertising, unfair competition, and related business torts. In her merger practice, Stacey develops and implements domestic and international merger advocacy strategies, including trial as needed. Stacey’s counseling practice includes advising on distribution and pricing issues, as well as joint ventures and other competitor collaborations.
Stacey regularly represents clients before the DOJ, FTC and states’ attorneys general in civil and criminal antitrust matters, as well as regarding consumer protection and privacy issues. She develops and implements antitrust compliance programs for domestic and international clients. She has worked extensively in pharmaceuticals and healthcare, payment systems, financial services, advertising and marketing, retail, and publishing.
Stacey is consistently ranked among the top antitrust lawyers in New York by Chambers USA and Super Lawyers, The Legal 500, and Global Competition Review. Chambers USA recognizes her “excellent antitrust litigation practice” and describes her as “very smart and very responsive,” “very perceptive and very knowledgeable,” offering a “highly pragmatic approach to matters.” Super Lawyers, which included her as one of the Top 50 Women Lawyers in New York in 2017, reports that she is a “fearless and innovative litigator, able to adjust to any type of antitrust case,” “with an outstanding ability to think strategically” with “the knowledge and litigation skills to match the most senior antitrust litigators.”
Stacey regularly writes and speaks on antitrust issues in the US and abroad. She is a Fellow of the Litigation Counsel of America, and has been the Chair of the Antitrust and Trade Regulation Committee of the New York City Bar Association since 2015.
Stacey clerked for Judge K. Michael Moore, now Chief Judge, in the U.S. District Court for the Southern District of Florida from 1994 to 1996.