Knobbe/Martens: Intellectual Property Law

Karen Vogel Weil


At a Glance

  • J.D. The George Washington University Law School
  • B.A. History, University of California - Davis

  • State Bar of California
  • Supreme Court of the United States
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of International Trade
  • U.S. District Court - Central District of California
  • U.S. District Court - Northern District of California
  • U.S. District Court - Southern District of California

Professional Profile 

Karen Vogel Weil has experience in all aspects of intellectual property litigation, including representing plaintiffs and defendants in patent, trademark, copyright and trade secret disputes. She has both trial and appellate experience. 

Karen is also experienced in the area of patent damages. Recently, she led the damages portion of a trial for Masimo Corp. which led to a $466 million jury award. This was the largest IP award of 2014. She has spoken extensively on patent litigation issues. 

Karen joined the firm in 1989 and became a partner in 1992.


  • The George Washington University Law School (J.D. 1984), with honors, Member - George Washington Journal of International Law & Economics
  • University of California - Davis (B.A. History 1980), cum laude, Phi Beta Kappa Honorary Society
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