Susannah Torpey
Susannah Torpey
Partner and Co-Chair, Technology Antitrust Group
Winston & Strawn
As Co-Chair of Winston’s Technology Antitrust Group and a Litigation Partner, Susannah Torpey litigates cutting-edge issues at the evolving intersection of antitrust, IP, and technology. Susannah has more than 15 years of experience representing leading companies and competitors in the preparation, trial, and appeal of complex antitrust cases. She regularly represents plaintiffs, as well as defendants, and has represented clients in both civil and criminal matters, including in international criminal antitrust investigations.

Susannah regularly represents major U.S. and multinational corporations in high-profile, multidistrict, and class action litigation and government investigations involving a wide array of federal and state antitrust issues, including monopolization, monopoly leveraging, price fixing, wage fixing, no-poach agreements, group boycotts, exclusive dealing, tying, price discrimination, unfair competition, anticompetitive product redesign, interoperability degradation, and mixed issues of antitrust and intellectual property law relating to Fair, Reasonable, and Non-Discriminatory (FRAND) obligations, standard-setting, patent licensing, patent misuse, and fraud on the PTO. Susannah also routinely counsels international and U.S. businesses regarding the minimization of antitrust risk, pricing strategies, antitrust compliance, and business issues relating to the use of tech and IP, many of which are key to a company’s global strategy.

Susannah has represented and counseled clients in a variety of industries, including the: high-tech; artificial intelligence; internet; web app; IoT; ecommerce and data platform; wireless connectivity (2G-5G); semiconductors and next-gen memory products; computer products; open source software, VoIP; fintech, electronic trading, patent aggregation and licensing, pharmaceutical; biotech; chemical processing; crude oil; steel products and fabrication; food products and distribution; publishing; professional sports; international trade; consulting; and financial services industries.

During law school, Susannah served as a Judicial Intern to the Honorable Judge Delissa A. Ridgway of the U.S. Court of International Trade. She also served as a Legal Intern in the Criminal Division of the DOJ.

Susannah was recently listed as a “Key Lawyer” in The Legal 500 U.S. 2021 for Civil Litigation/Class Actions: Defense. She was recognized in the 2020 edition of Benchmark Litigation as a “New York Litigation Star” and “National Practice Area Star” in Antitrust. She was selected to the 2021, 2020, 2019, and 2018 New York Super Lawyers list. She is also consistently recognized in the list of “Top Women Attorneys in the New York Metro Area” published by New York Times Magazine. In 2020, Susannah was part of the group awarded “Law Firm of the Year” for its Antitrust/Competition practice by U.S. News & World Report – Best Law Firms and “Antitrust Firm of the Year” by Benchmark Litigation. In 2019, Susannah was part of the group recognized as Tier 1 National “Best Law Firm” by U.S. News – Best Lawyers. In 2018, Susannah was part of the group named as “Antitrust Firm of the Year” by Benchmark Litigation as well as “Trial Group of the Year” by Law360. In 2016, she was awarded “Best Business General Antitrust Article” for her article entitled, “Human Resources: The Next Antitrust Frontier” from the 2016 Antitrust Writing Awards. In 2015, she was part of the group recognized as the “Cartel Defense Group of the Year.” In 2014, the denial of class certification she worked on was recognized as one of the “Top Defense Verdicts” of the year.

Susannah is a member of the Firm’s hiring and associate evaluation committees. She is also an active member of the American Bar Association Section of Antitrust Law, and the New York State Bar Association Antitrust Law Section, and the New York City Bar Association Antitrust and Trade Regulation Committee. She also formerly served on the Board of Trustees for the Children’s All Day School.

Ms. Torpey earned her JD at New York University School of Law, and her undergrad degree at Colgate University.