Rob Barthelmess

Associate

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Rob Barthelmess is a litigation associate in O’Melveny’s Los Angeles office, where he devotes much of his practice to complex civil litigation, appeals, and white collar defense and corporate investigations. Before returning to O’Melveny in 2019, Rob served as a law clerk to the Honorable Ryan D. Nelson in the United States Court of Appeals for the Ninth Circuit.

Rob graduated cum laude from the Georgetown University Law Center. While in law school, Rob worked as a law clerk at the United States Senate Committee on the Judiciary, Subcommittee on Antitrust, Competition Policy and Consumer Rights, the United States Securities & Exchange Commission’s Division of Enforcement, and the Santa Barbara County District Attorney’s Office.

Admissions

Bar Admissions

  • California

Court Admissions

  • US District Court, Central District of California
  • US Court of Appeals, Ninth Circuit

Education

  • Georgetown University, J.D.: cum laude; Dean’s List; Executive Notes Editor, Journal of National Security Law & Policy
  • University of California at Los Angeles, B.A., Philosophy

Professional Activities

Clerkships

  • Honorable Ryan D. Nelson, United States Court of Appeals for the Ninth Circuit

Internships

  • United States Senate Committee on the Judiciary, Subcommittee on Antitrust, Competition Policy and Consumer Rights
  • United States Securities & Exchange Commission, Division of Enforcement
  • Representing multinational companies and individuals in fraud litigation in California state and federal courts
  • Conducting internal investigations and representing clients in connection with Department of Justice and US Securities & Exchange Commission investigations
  • Representing large corporations on appeal and advising clients on appellate strategy
  • Defending an electric-vehicle and technology company in an Alien Tort Statute action
  • Counseling a national managed care organization in connection with government audits