Catherine Simonsen is an antitrust enforcement attorney with over a decade of experience litigating complex antitrust cases on the plaintiff and defense sides in federal and California state courts. Most recently, Catherine served in the Office of Policy Planning and as the Assistant Regional Director for the Western Competition Group at the Federal Trade Commission. Catherine joined the FTC from the Antitrust Section of the California Department of Justice, where she served as a Deputy Attorney General on the State’s California v. Amazon matter. Prior to her time with the California DOJ, Catherine was a partner at White & Case in the firm’s litigation practice. Before entering private practice, Catherine served as a law clerk to the Honorable J. Jerome Farris of the U.S. Court of Appeals for the Ninth Circuit and the Honorable John C. Coughenour of the U.S. District Court for the Western District of Washington. Catherine holds a J.D. from Yale Law School and a B.A. from Stanford University.