Mark B. Eisen

Mark B. Eisen

Mark B. Eisen

Toronto, Ontario, Canada

Patent Agent. Trademark Agent. Mark has earned these credentials over his three decade (plus) practice protecting mechanical, electrical and IT inventions and trademarks around the world. While this may make him a rock star in our eyes, he is also a legitimate rock star with his charity band, Side 3.

Mark is not merely a recognized and decorated practitioner of intellectual property law; he is also heavily involved in training future IP leaders, having taught patent drafting at the Intellectual Property Institute of Canada's annual Patent Examination Tutorials for more than a decade. Mark has appeared as a witness before the House of Commons Standing Committee on Industry on multiple occasions, addressing problems in the Canadian IP system and recent major changes to Canadian trademark law, and has delivered presentations on IP to Members of Parliament and Senators, examiners at the Canadian Intellectual Property Office and law schools, as well as at conferences in Canada and abroad.

Around the office, Mark is known for his low key demeanor and high powered insights.  Which are two great attributes that go great together.

Areas of Practice

  • Intellectual Property


  • Osgoode Hall Law School, Toronto, Ontario, Canada
    • LL.B. - 1983
  • University of Toronto, Toronto, Ontario, Canada
    • Major: Sciences

Honours and Awards

  • Listed in The Best Lawyers in Canada for Intellectual Property
  • Martindale-Hubbell: BV rated
  • 2015 Acquisition International Legal Awards: Trademark Lawyer of the Year – Canada
  • 2015 Acquisition International Legal Awards: Patent Lawyer of the Year – Canada
  • 2015 Corporate INTL Awards: Patents Lawyer of the Year in Canada
  • 2015 Corporate Livewire Legal Awards: Top Tier in Intellectual Property Law
  • 2014 Acquisition International Legal Awards: Sustained Excellence in Patents
  • 2013 Acquisition International Legal Awards: Patent Agent of the Year - Ontario, Canada
  • 2011 International Law Office "Client Choice" Award : Intellectual Property, Canada

Professional Associations and Memberships

  • Intellectual Property Institute of Canada, Past President


  • English