Katherine Hyde

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Katherine is a litigator who works on complex commercial disputes in state and federal courts. She has represented a wide range of clients in cases involving business torts, contractual disputes, fraud claims, and other business litigation, as well as matters in the areas of health care, employment, insurance, and election law.  She has appeared in court to argue motions and civil appeals and has experience with mediation, arbitration, and settlement negotiations. After law school, she clerked for two years at the federal district court in Phoenix.  Before joining Coppersmith Brockelman, Katherine practiced commercial litigation at a national law firm in Phoenix.

Representative Matters

  • Achieved dismissal of claims alleging discrimination and defamation, upheld on appeal
  • Litigation involving hospital peer review
  • Representation of companies and individuals in restrictive covenant and non-solicitation litigation
  • Representation of directors and officers in commercial fraud case
  • Pro bono counsel in immigration appeal before the U.S. Court of Appeals for the Ninth Circuit


  • Hon. Susan R. Bolton, U.S. District Court, 2007 – 2009

Education & Admissions

  • J.D., University of Arizona, 2007; summa cum laude, Order of the Coif, Articles Editor, Arizona Law Review, Perry Rogers Scholar, Child Advocacy Clinic, 2006-2007
  • B.A., History and Literature, Harvard University, 2001; magna cum laude
  • Admitted in Arizona, 2007
  • U.S. District Court, District of Arizona, 2009
  • U.S. Court of Appeals, Ninth Circuit, 2010
  • U.S. Supreme Court, 2022