David Henn


540 Broadway
Albany, NY 12207
Tel: 518-449-0044
Fax: 518-449-0047

Bar Admissions

  • United States Patent & Trademark Office
  • State of New York


  • State University of New York at Buffalo Law School, J.D.
  • Syracuse University, B.S. in Aerospace Engineering

David E. Henn


David Henn’s practice includes patent application preparation and prosecution, opinion work, and client portfolio counseling. Dave brings strong technical experience to clients in the areas of power handling equipment/software, gas turbines, electrophotography, MEMS/semiconductor technology and packaging, internet applications, optical metrology, electrohydraulic automatic transmission control systems, photolithography, space vehicle fuel control valves, water purifiers, laser gun sights, and laser pulse weapons. Dave represents clients ranging from independent inventors to large corporate entities and gained experience from government service, private practice, academia, and in-house practice.

Dave has over 25 years of experience in the intellectual property field, starting at the United States Patent and Trademark Office in Washington D.C. where he was a U.S. Patent Examiner. He joined Hoffman Warnick in 2010 and scaled back to part time work in 2013 when he became General Patent Counsel of Key Systems, Inc.  Through the years, Dave has prepared hundreds of patent applications and dozens of opinions.

Professional Memberships

  • Rochester Intellectual Property Law Association (RIPLA)