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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 on subjects including federal jurisdiction, securities regulation, criminal law, antitrust, and products liability, with a special focus on litigation in the U.S. Supreme Court, Ninth Circuit, and California appellate courts. She also has extensive trial experience, including participation in three cases tried to verdict, and has taught criminal law at the University of Michigan Law School. Anna-Rose clerked for Justice Ruth Bader Ginsburg and Judge Michael Boudin.

Illustrative Professional Experience

  • United States v. US Airways. Coordinated legal writing and motions practice for US Airways’ lead counsel team that defended the company’s multibillion dollar merger with American Airlines against an antitrust challenge by the U.S. Department of Justice.
  • J.Q. v. T.B. Argued successful appeal for a pro bono client on a significant jurisdictional issue of first impression that will help domestic violence survivors throughout California.
  • Burwell v. Hobby Lobby Stores, Inc. Co-authored amicus brief on behalf of the Guttmacher Institute in the high-profile Supreme Court contraception mandate case; the brief was cited extensively by both on the Solicitor General in his brief on behalf of the United States and in the principal dissent.
  • Tomel v. State of Hawaii. Argued successful Ninth Circuit appeal on jurisdictional issue concerning the appealability of trial court orders before entry of judgment.
  • Larson v. Warner Bros. Entertainment, Inc. Played a key role on the O’Melveny team that obtained a “grand slam” victory for clients Warner Bros. and DC Comics at the Ninth Circuit in the long-running Superman copyright litigation.
  • Bailey v. United States. Co-authored Supreme Court amicus briefs at both the certiorari and merits stage on behalf of the National Association of Criminal Defense Lawyers in a Fourth Amendment case.
  • Tibble v. Edison International. Played a key role on the O’Melveny team that obtained a victory on several high-stakes issues before the Ninth Circuit in an ERISA class action.
  • Worked on multiple criminal trials, appeals, and motions hearings, including winning acquittal on all counts after five-week securities fraud trial in New York federal court, and winning acquittal on all counts in criminal conspiracy case in New Hampshire federal court.
  • Co-authored successful 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, and oversaw complex national discovery in a variety of other high-stakes civil cases.

Professional Activities

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
Co-President, Family Violence Appellate Project’s New Leadership Council
Lecturer, Criminal Law, University of Michigan Law School, 2008
Amicus Administrative Coordinator, National Association of Criminal Defense Lawyers.
Member, E. J.M. Inn of Court
Temple Bar Scholar, London, England, 2004
Admitted to Practice, US Supreme Court; US Courts of Appeals for the Third, Ninth, and Eleventh Circuits; US District Courts for the Central and Northern Districts of California

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