Founding Partner





Support Staff
Eunice Mang

Practice Areas

  Business methods and software
Business strategy

Mr. Hamre is an intellectual property business strategist. With his domestic and international IP knowledge and deep experience, he practices patent, trademark, copyright, and trade secret law and licensing and certain aspects of enforcing of it. He works on creation, prosecution, various types of IP legal opinions, IP due diligence and licensing, some enforcement, and counseling clients with respect to IP portfolio management and IP business strategies.


Concordia College, Moorhead, MN
   B.A., Physics and Mathematics majors, cum laude
University of Nebraska, Lincoln, NE
   M.S., Physics
Drake University Law School, Des Moines, IA
   J.D., Law Review

Bar Admissions

Minnesota State Bar
Iowa State Bar (inactive)
U.S. Patent and Trademark Office
U.S. District Court
U.S. Court of Appeals


On leaving the U.S. Army as a First Lieutenant, Mr. Hamre was a project engineer for several years for the U.S. Navy where his group notably designed and built 3 different models of high-capability, water-filled submarines in support of U.S. Navy SEAL missions. After changing careers from R & D to Intellectual Property law, Mr. Hamre completed a distinguished, 25 year career at the IP law firm of Merchant & Gould where he was Chair of the International Practice Group. He is a founding partner of HSML.

Mr. Hamre has written and prosecuted hundreds of patent applications for clients ranging from individuals and start-up companies to large, multi-national companies, both domestic and foreign. Mr. Hamre has had a substantial trademark practice. He has long been a counselor and business strategist. Many patents and trademarks which he has worked on have been litigated, licensed, sold for substantial amounts, and/or supported significant businesses. One easy example of a patent prosecuted by Mr. Hamre and later litigated is U.S. Patent 4,624,060 invented and owned by an individual, Susan M. Maxwell. The patent was infringed by many companies in the shoe industry, it was litigated, and judgments were entered and collected in amounts approaching $20 million. There are other stories which can be told.

Mr. Hamre has visited many IP law firms and clients in many foreign countries, including Japan, Korea, other parts of Asia, Germany, France, UK, Italy, Spain, Sweden, Netherlands, Belgium, other parts of Europe, and Canada. Mr. Hamre has used his extensive and varied background to consult and work on many domestic and international IP/business projects.


Mr. Hamre has infrequently given presentations at conferences, and has frequently given presentations on a variety of IP topics to law firms and clients around the world.

Professional Affiliations

American Intellectual Property Law Association
American Bar Association
Association Internationale pour la Protection de la Propriete Industrielle
Intellectual Property Owner’s Association
International Trademark Law Association
Licensing Executives Society (USA & Canada), Inc.
Minnesota Intellectual Property Law Association
Minnesota State Bar Association
Observer at Asia Patent Attorney Association
Marques, Association of European Trademark Owners