Jeffrey S. Gundersen



Jeff Gundersen is focused on helping businesses of all sizes achieve their goals by capitalizing on innovation. For more than two decades, clients have come to Jeff for intellectual property counsel. Moreover, he is highly experienced at building and running teams charged with supporting all client legal needs, whether litigation, business, or intellectual property focused. He is well positioned to provide practical legal counsel with an understanding that any request for legal counsel is tied to an underlying business challenge or opportunity.

As a registered patent lawyer, Jeff helps clients with their patent procurement, enforcement, and counseling needs, including infringement matters, licensing, and transactions. Further, Jeff is experienced in the preparation and negotiation of intellectual property agreements, preparation of patent opinions, and performing transactional due diligence. Importantly, he also counsels multinational companies regarding global intellectual property strategies.

With longstanding clients in a wide range of fields, Jeff’s breadth of experience permits him to help clients succeed in addressing their business challenges regardless of field. Jeff represents clients focused on smart buildings, medical devices, robotics, transportation solutions including electric and autonomous vehicles, artificial intelligence, engines and outdoor power equipment, marine technologies, clean energy including nuclear power, water technologies, and energy storage.

Jeff worked as a nuclear engineer for an energy company for several years before attending law school and joining Foley. Jeff is presently chair of the firm’s Intellectual Property Department.


  • Marquette University Law School (J.D., summa cum laude, 2000)
  • University of Wisconsin-Madison (Dual M.S. Degrees, 1993)
    • Medical physics
    • Nuclear engineering and engineering physics
  • University of Wisconsin-Madison (B.S., 1992)
    • Nuclear engineering
    • Distinguished scholar (top 10 percent of his college of engineering class)
    • Member, Tau Beta Pi National Engineering Honor Society


  • Selected by his peers for inclusion in The Best Lawyers in America© in the field of Patent Law (2017-2024)
  • Recognized in IAM Patent 1000 – The World’s Leading Patent Practitioners in the field of patent prosecution (2020-2021)
  • Recognized by Chambers USA: America’s Leading Lawyers for Business in intellectual property in Wisconsin (2010-2023)


  • Wisconsin
  • U.S. Patent and Trademark Office