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Overview
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Experience
Introduction
Karl represents clients in a wide range of complex litigation in federal and state appellate courts nationwide.
Karl Worsham is an experienced appellate advocate and legal strategist. He has litigated the most important cases for his clients at every level—from state trial court to the Supreme Court of the United States.
Karl has handled appeals involving federal jurisdiction, international trade, real estate contracts, state and municipal government authority, insurance recovery, environmental and water law, and tort law. At the trial level, he provides invaluable strategic guidance from the moment the pleadings are filed through post-trial briefing. One of the focuses of that strategic role is briefing and arguing critical motions—including emergency motions—and preserving legal issues for appeal.
Maintaining an active pro bono practice, Karl has represented clients in appellate matters involving habeas corpus, immigration, constitutional rights, and family law in federal and state courts.
Prior to joining Ashurst Perkins Coie, Karl clerked on the U.S. Court of Appeals for the Sixth and Tenth Circuits and the U.S. Court of Federal Claims.
Education & credentials
- Harvard Law School, J.D., cum laude, Managing Editor, Harvard Environmental Law Review; Executive Editor, Harvard Journal of Law & Public Policy, 2017
- Brigham Young University, B.A., Philosophy, Article Author and Editing Team Leader, BYU Prelaw Review, 2013
- Salt Lake Community College, A.S., General Studies, 2010
- Arizona
- District of Columbia
- Utah
- Supreme Court of the United States
- U.S. Court of Appeals for the Third Circuit
- U.S. Court of Appeals for the Fifth Circuit
- U.S. Court of Appeals for the Sixth Circuit
- U.S. Court of Appeals for the Seventh Circuit
- U.S. Court of Appeals for the Eighth Circuit
- U.S. Court of Appeals for the Ninth Circuit
- U.S. Court of Appeals for the Tenth Circuit
- U.S. Court of Appeals for the Eleventh Circuit
- U.S. Court of Appeals for the District of Columbia Circuit
- U.S. Court of Appeals for the Federal Circuit
- U.S. Court of Federal Claims
- U.S. District Court for the District of Arizona
- U.S. District Court for the District of Utah
- Hon. Joan L. LarsenU.S. Court of Appeals for the Sixth Circuit
- Hon. Carolyn B. McHughU.S. Court of Appeals for the Tenth Circuit
- Hon. Charles F. LettowU.S. Court of Federal Claims
Professional recognition
Recognized by Best Lawyers: Ones to Watch for Appellate Practice Law; Commercial Litigation Law, 2022-2026
Named an Appellate “Rising Star” by Super Lawyers, 2023-2025
State of Arizona v. Marner
Counsel for amicus curiae in the Arizona Supreme Court in support of a criminal defendant who sought to disqualify the Tucson Section of the Arizona Attorney General’s Office due to an appearance of impropriety arising from the actual misconduct of a prosecutor. The Arizona Supreme Court unanimously agreed with amicus curiae’s position, holding that trial courts have broad discretion to vicariously disqualify a prosecutor’s office based on an appearance of impropriety. The court also held that, under the facts in this case, the trial court did not abuse its discretion in disqualifying the Tucson Section of the Arizona Attorney General’s Office because the prosecutor’s actual misconduct may have tainted the proceedings. __ Ariz. __, __ P.3d __, 2021 WL 2197962 (2021).
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