Eugene Gierczak

Eugene Gierczak

Counsel / Patent & Trademark Agent

Eugene Gierczak
Contact Information

Eugene Gierczak

Counsel / Patent & Trademark Agent

T 416.865.2968

F 416.865.6636



LL.B., Osgoode Hall Law School, York University
B.Sc., Chem. Eng., Queen’s University
Bar Admission

Ontario, 1979
About Gardiner Roberts LLP

For over 100 years, Gardiner Roberts has combined the benefits of a full-service law firm with the dexterity of a mid-sized one. Our focused, cross-disciplinary, one-team approach and commitment to understand your business joins our relevant expertise, immediacy and dedication to providing client-centric, hands-on service. 100% Canadian and fully independent, we offer a level of overall efficiency and cost-effectiveness that larger firms can't touch. Resisting "cookie-cutter" law, Gardiner Roberts has built its name - one rewarding client relationship at a time.

Executive Summary

Eugene Gierczak provides advice on all aspects of intellectual property law including litigation, corporate transactions, and patent, copyright, and trademark applications.

In addition to being a lawyer, Eugene is a registered professional engineer for the province of Ontario, as well as a registered patent and trademark agent for Canada and the U.S. He has extensive experience in drafting original patent applications covering a wide range of technologies including the chemical, mechanical, electrical, metallurgical, artificial intelligence, and computer fields. He assists his clients with patent issuance in Canada, the U.S. and worldwide.

Eugene has a long history in the preparation and prosecution of patent, trademark, copyright, and design applications, as well as trademark opposition and expungement proceedings, in Canada, Brazil, the United States, and Europe.

He represents clients’ interests in technology transfers, joint ventures, licenses, computer hardware and software transactions, and other intellectual property and information technology issues relating to corporate transactions. His skills extend to developing intellectual property strategies including IP audits to define and protect his clients’ intellectual assets.

Eugene is an experienced litigator before the Canadian courts in cases dealing with infringement, validity, search and seizure, and injunction applications concerning patents, trademarks, designs, copyright, intellectual property, and confidential information. He incorporates alternate dispute resolution strategies to bring litigation issues in line with clients’ business goals.

Eugene has written numerous papers and is a frequent speaker on intellectual property issues including “Licensing of Patents,” “Technology Transfers,” and “Intellectual Property Integration with Business Plans” before the legal profession in Canada, the United States, Brazil, and Europe. He was called upon annually to speak on “Joint Ventures and Strategic Alliances in the Context of IP Issues” before the Canadian Institute of Lawyers.

His legal strategy involves understanding a client’s business and adding value by defining and protecting intellectual assets using a business-minded approach consistent with the client’s goals.


  • Intellectual Property
  • Registered Patent & Trademark Agent in Canada and the U.S.
  • Information Technology, Intellectual Property Litigation

My Blog
  • Award for Excellence, Patents and Trademarks lawyer, Canadian-Polish Chamber of Commerce, 2015


Professional Involvement
  • Member, Law Society of Ontario Member
  • Member, The Canadian Bar Association
  • Member, INTA (Intellectual Trade Mark Association)
  • Past Member, Association of Professional Engineers of Ontario, Disciplinary Hearing Committee
  • Member of Canada Poland Chamber of Commerce
  • Past Director of Greater Toronto Marketing Alliance (GTMA)