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Helene Jaffe



Partner & co-head Antitrust Group, Proskauer Rose
New York, N.Y.

Experience & Areas of Interest:

Before coming to Proskauer Rose in January 2012, Helene D. Jaffe was a former global co-head of the Antitrust/Competition practice at Weil, Gotshal & Manges. Ms. Jaffe concentrates on the transactional, counseling and litigation aspects of advertising, marketing and antitrust issues (particularly regarding mergers, acquisitions, and Hart-Scott-Rodino matters). She has been involved in numerous Lanham Act advertising, trademark, and trade dress cases (injunctions as well as judge/jury trials) involving a broad spectrum of consumer products and services, such as over-the-counter drugs, cosmetics, and foods, as well as challenges for these products, among others, at the networks, industry self-regulatory boards, and various international, federal, and state regulatory agencies.

She appears regularly before both the international, federal, and state antitrust enforcement agencies and the federal judiciary representing clients who are either buying or selling companies here or abroad as well as clients whose pricing, promotional, or marketing practices are under investigation. Ms. Jaffe has done extensive work in the healthcare area, in particular, for some of the leading pharmaceutical companies.

Ms. Jaffe is an Adjunct Associate Professor at New York University School of Law, teaching a graduate course in Federal Trade Commission Law, and was on the Council of the ABA’s Antitrust Section. She has served as the chair of the Consumer Protection Committee, vice-chair of the Clayton Act Committee of the Antitrust Section of the ABA, chair of the Committee on Trade Regulation of the New York County Lawyer's Association, and member of the Trade Regulation Committee of the Association of the Bar of the City of New York.


  • Columbia University (J.D., 1976)
  • Barnard College (B.A., 1976)

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