Jonathon Maddern represents clients in a range of disputes, including in the areas of contract and intellectual property. Jonathon also has an active pro bono practice that includes immigration and adoption matters.

Jonathon earned his J.D. from the University of California, Berkeley School of Law, where he served as senior articles editor of the Berkeley Technology Law Journal. While in law school, Jonathon served as a judicial intern for the Hon. Brian E. Hill of Santa Barbara County Superior Court.

Prior to law school, Jonathon served as an imagery intelligence analyst and remotely piloted aircraft sensor operator in the U.S. Air Force. He was selected as the 432nd Wing Henry “Red” Erwin Enlisted Aviator of the Year and earned the John L. Levitow Award while attending Airman Leadership School.


  • Converse Inc. v. Skechers U.S.A., Inc. (ITC, E.D.N.Y). Represented Skechers in a trademark infringement lawsuit on remand at the ITC. Skechers’ Twinkle Toes, BOBS, and Hydee Hytop sneakers were found not to infringe Converse’s claimed trademark. In addition, as a result of the litigation, Converse was forced to significantly narrow the originally asserted scope of its claimed trademark in order to preserve its validity.


  • "Standard Chartered Does It Again: More Misconduct, More Fines," Revue Internationale de la Compliance et de l'Ethique des Affaires (June 3, 2019)

Professional Activities

  • Pathfinder, Leadership Council on Legal Diversity (2023)


University of California, Berkeley School of Law (J.D. 2018); Senior articles editor, Berkeley Technology Law Journal

College of William & Mary (B.A., Government, 2015), summa cum laude; Pi Sigma Alpha Honor Society; Veterans Society of William & Mary


  • California
  • U.S. District Court for the Central and Northern Districts of California
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