Mr. Douglas N. Deeth

Country/Region of practice
About me

Doug Deeth was admitted to the Bar of Ontario in 1976. He is a Registered Canadian Patent and Trademark Agent and Registered U.S. Patent and Trademark Agent. Doug is a founding member of Deeth Williams Wall LLP. He practises exclusively in the areas of intellectual property and technology law, concentrating on litigation and licensing matters. Doug has more than thirty years of litigation experience. He appears regularly before the Federal Court of Canada and the courts of the Province of Ontario. His practice combines his extensive litigation experience with an expertise in drafting and negotiating license and product development agreements. He provides timely, practical and pragmatic advice to clients on the clearance, protection and enforcement of all forms of technology and intellectual property rights, and has particular expertise in chemical and pharmaceutical products and processes.

Doug has taught, written and spoken extensively on intellectual property law. He has lectured at McMaster University, the University of Toronto and Osgoode Hall law schools and the McGill courses on Patent and Copyright Law.

Academic Qualifications

​B.A.Sc. (Chem.Eng., Waterloo) LL.B.(Toronto)

Hobbies & Special Interests
Here's a list of Mr. Douglas N. Deeth's interests and hobbies
Hockey / Ice hockey
Wine Tasting / Collecting
Social Media

Experience & Qualifications

Technical Specialisms
  • Biochemistry and pharmacology
  • Chemistry
  • Food technology
  • Materials; polymer science
  • Medical and veterinary methods and products
Professional Experience
  • Design and copyright litigation
  • IP due diligence
  • Licensing and IP-related agreements
  • Patent litigation
  • Trade mark litigation

FICPI Honour

  • President of Honour

Roles in FICPI

  • CET 7 IP Enforcement and Alternate Dispute Resolution

    CET Group 7 focuses on contentious IP issues including but not limited to IP opposition (both pre and post grant), revocation, appeal, infringement action, amicable settlement of disputes including via alternate dispute resolution as well as substantive and procedural aspects related thereto.

    On behalf of FICPI, Group 7 also endeavours to keep a close watch on all crucial national and international developments on IP enforcement landscape including on custom actions, anti-counterfeit issues, reciprocal judgements, professional privilege, transfer of right etc and keep its membership abreast of such developments from time to time. Group 7 also aims to create a go to list of certified arbitrators and/or mediators within FICPI.

  • Member