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San Francisco, CA 94111


Anna-Rose Mathieson


Anna-Rose Mathieson is a counsel in O’Melveny’s San Francisco office and a member of the Appellate Practice. She has written numerous briefs for the U.S. Supreme Court, lower federal courts, and state courts on subjects including federal jurisdiction, securities law, criminal law, antitrust, and products liability. In addition to her appellate work, she has done extensive trial-level litigation, including participation in three trials taken to verdict, and has managed complex international discovery.

Prior to joining O’Melveny, Anna-Rose was an associate at Williams & Connolly LLP in Washington, DC. She also taught criminal law at the University of Michigan Law School, and clerked for Justice Ruth Bader Ginsburg and Judge Michael Boudin.

Illustrative Professional Experience

  • Drafted Supreme Court merits briefs, petitions for certiorari, briefs in opposition to certiorari, and amicus briefs on topics including the scope of work-product protection, state land rights, access to DNA evidence, federal jurisdiction, class action certification, securities law, government contractor immunity, and the Fourth Amendment.
  • Drafted appellate briefs on topics including the Alien Tort Statute, the Class Action Fairness Act, California’s SLAPP statute, antitrust, products liability, attorney’s fees and costs, federal removal jurisdiction, head-of-state immunity, the scope of California’s hearsay statute, and copyright law.
  • Worked on multiple criminal trials and motions hearings, including:
    • Five-week trial of a hedge fund manager on charges of securities fraud and insider trading.
    • Three-week trial of an executive on charges of conspiracy to defraud the government.
    • Second-chaired a four-day criminal trial, cross-examining key witnesses and arguing motions in limine and jury instructions.
  • Drafted petitions for interlocutory appeal under 28 U.S.C. 1292(b) in several federal circuits.
  • Coordinated massive international discovery, document collection, and review in a civil RICO case against a major foreign company, and oversaw complex national discovery in a variety of other civil cases.

Professional Activities

Admitted to Practice, US Supreme Court, US Courts of Appeals for the Ninth and Eleventh Circuits, US District Courts for the Central and Northern Districts of California
Law Clerk, Justice Ruth Bader Ginsburg, Supreme Court of the United States, 2005-2006; Chief Judge Michael Boudin, US Court of Appeals for the First Circuit, 2003-2004
Lecturer, Criminal Law, University of Michigan Law School, 2008
Temple Bar Scholar, London, England, 2004

University of Michigan Law School, J.D., summa cum laude, 2003: Bates Scholar (law school’s highest honor); Grady Prize (graduated first in class); Darrow Scholar; Order of the Coif; Honigman Award; Dykema Scholar; Waigle Prize; Cunningham Prize; Class of 1908 Prize; Article Editor and Symposium Coordinator, Michigan Law Review

Bard College, B.A., Philosophy: Lockwood Prize (college’s highest honor); Levy Foundation EEC Scholar

California; District of Columbia