Sonia Lahr-Pastor advises and represents clients in complex, high-stakes antitrust matters. She has experience representing clients in matters before the Department of Justice and the Federal Trade Commission, including responding to Second Requests and Civil Investigative Demands. She also represents clients as both plaintiffs and defendants in private federal antitrust litigation, including consumer class actions and other complex litigation. Sonia also counsels clients on a variety of antitrust matters.