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About Claire Leonard

Claire is a senior associate in our antitrust, competition, and trade practice, based in Washington D.C.  Claire is an experienced antitrust litigator who focuses on complex litigation, criminal investigations, and antitrust counseling.  She handles matters in federal courts across the country, and regularly represents clients before the U.S. Department of Justice and other agencies.

Claire’s work includes defending international corporations in large-scale and high-stakes litigations, including class actions, civil enforcement actions, criminal prosecutions, and merger challenges.  Her experience spans every stage of litigation—from case inception through trial, as well as appeals in federal circuit courts and the U.S. Supreme Court.

Claire regularly counsels clients on competition issues arising at the intersection of antitrust and international trade and intellectual property, including antitrust issues in antidumping proceedings and standard-setting organizations.

Claire also has significant experience representing corporate clients in commercial disputes involving alleged violations of the Racketeer Influenced and Corrupt Organizations Act (RICO), the Lanham Act, and state consumer protection laws. 

Prior to joining Freshfields, Claire worked at another global law firm, focusing her practice on antitrust litigation and other complex commercial litigation.