Thomas Brennan



Thomas Brennan is a registered patent attorney and is of counsel to the firm. His practice focuses on patent acquisition, infringement/validity analysis and litigation support in software, system, computer hardware and semiconductor related intellectual property areas. Tom’s education and his decade of experience as a systems engineer performing computer hardware, software and semiconductor design for military and medical applications has prepared him to handle intellectual property issues efficiently over a broad scope of technologies. Tom is especially talented in assisting in-house counsel in developing patent strategies and in recognizing and harvesting innovative ideas.


  • Minneapolis Metropolitan Area

Bar Admissions

  • Minnesota
  • United States Patent and Trademark Office


  • Mitchel Hamline School of Law (St. Paul, MN 1994, J.D., cum laude)
  • Southern Methodist University (Dallas, TX, 1987, MSEE, Computer Engineering)
  • University of Wisconsin (Madison, WI,1980, BSEE, Computer Engineering)

Past Legal Employment

  • Shumaker Sieffert, PA
    • Senior Counsel, 2014-2022
  • Schwegman, Lundberg, Woessner & Kluth, PA
    • Shareholder, 1993-2014
  • Merchant & Gould, P.C.
    • Patent Agent/Law Clerk, 1990-1993

Past Engineering Employment

  • GE Medical Systems
    • Project Engineer – Computed Axial Tomography (CAT) Scanners, 1988-1990
  • E-Systems
    • Project Engineer – Avionics, 1982-1988
  • Sperry Univac
    • Computer Engineer – Naval Computing Systems, 1980-1982

Professional Associations

  • Minnesota Intellectual Property Law Association
  • Minnesota State Bar Association