Susannah Torpey Winston & Strawn


Susannah P. Torpey is Co-Chair of Winston & Strawn’s Technology Antitrust Group and a partner who litigates cutting-edge issues at the 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. Susannah regularly represents major corporations in high-profile, multidistrict, and class action litigation and government investigations involving a wide array of federal and state antitrust issues, including monopolisation, 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 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. She has been repeatedly recognized as a ‘SuperLawyer,’ ‘Top Woman Attorney,’ and as a ‘Star’ in Antitrust and Litigation for obtaining critical wins for her clients, whether at trial on behalf of plaintiffs or by winning complete dismissals on behalf of defendants.

2023 Awards

2022 Awards

2021 Awards


Nominee, 2022 Antitrust Writing Awards: Academic, Mergers

Nominee, 2021 Antitrust Writing Awards: Business, General Antitrust

Winner, 2016 Antitrust Writing Awards: Business, General Antitrust

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