A member of the firm’s Intellectual Property practice group, Zach Howenstine focuses on complex intellectual property matters in federal and state trial and appellate courts throughout the United States. His practice encompasses many areas of complex civil litigation including patents, trademarks, trade secrets, antitrust issues, and contract matters involving technologies in the mechanical, electrical, and chemical arts. Zach also defends individuals and companies in civil actions and proceedings instituted by the U.S. government, including False Claims Act litigation and investigatory and enforcement actions involving the Securities and Exchange Commission.

Zach has litigated cases in federal and state courts around the country, including federal jury trials in the Northern District of California and Eastern District of Texas, and appeals to the Federal Circuit and Eighth Circuit Courts of Appeals.

*Admission to practice law in New York is pending.


  • University of Missouri School of Law  (J.D., 2009)
    • Order of the Coif
  • Macalester College  (B.A., cum laude, 2002)
    • German Studies


  • Missouri
  • U.S. Court of Appeals, Federal Circuit
  • U.S. Court of Appeals, Eighth Circuit
  • U.S. District Court, Eastern District of Missouri
  • U.S. District Court, Eastern District of Texas
  • U.S. District Court, District of Colorado
  • U.S. District Court, Eastern District of Tennessee
  • U.S. District Court, Eastern District of Arkansas


Prior to joining the firm, Zach was a law clerk for U.S. District Judge E. Richard Webber.