Jeffrey S. Gundersen



Jeffrey (Jeff) S. Gundersen is a partner and intellectual property lawyer with Foley & Lardner LLP and is chair of the firm’s Intellectual Property Department.

Jeff provides counsel relating to patent acquisition and enforcement, product design, patent infringement matters, licensing and transactions. In addition to the preparation of intellectual property agreements, patent opinions and transactional due diligence opinions, he also counsels multi-national companies regarding global patent prosecution strategies. Jeff worked as a nuclear engineer for an energy company for several years before attending law school.


  • 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 - 2023)
  • 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)
  • Selected for inclusion to the Wisconsin Super Lawyers list (2018)
  • Selected for inclusion to The Legal 500 in the fields of:
    • Patent licensing and transactional (2015, 2017 and 2018)
    • Patent prosecution (2014, 2015 and 2017)
    • Patent portfolio management and licensing (2016)
  • Selected for inclusion to the Wisconsin Super Lawyers – Rising Stars list (2006, 2008, 2009)


  • Wisconsin
  • U.S. Patent and Trademark Office