Senior Associate - Patent Agent

James Duffy is a lawyer and patent agent in Lavery's intellectual property group. James holds a degree in Honours Chemistry from McGill, where he graduated with "First Class Honours" and on the Dean's list. James is also a graduate of McGill's Faculty of Law.

James' main areas of practice are IP litigation and patent prosecution. As a litigator, James has acted in several complex IP litigation files, including multijurisdictional files for clients in various industries, such as pharmaceuticals, electronics, and entertainment. He has represented clients in litigation files involving patents, trademarks, industrial designs, and copyrights, both before Québec Courts and the Federal Court.

As a patent agent involved in patent prosecution (including the drafting of patent applications), James' main areas of practice are chemistry, materials, energy management and conservation, mechanical engineering, and metallurgy. He is also involved in preparing legal advice and opinions regarding patents.

Education

• LL.B., Common Law, McGill University, 2014
• B.C.L., Civil Law, McGill University, 2014
• B.Sc., Honours Chemistry, McGill University, 2011

• Best Lawyers - Ones to Watch 2026

• Entrepreneurs and Intellectual Property: Avoid These Thirteen Mistakes to Protect Yourself (Part 1 of 3)

  By James Duffy |April 2021

• Product Advertising in the Time of COVID-19: Health Canada and the Competition Bureau are on the Lookout for Misleading Claims

  By James Duffy |March 2021

• COVID-19 Products: Health Canada and Competition Bureau Watch Out for Misleading Claims

  By James Duffy |February 2021

• A picture is worth a thousand woes!
• Exemptions to infringement for research under Canadian law
• Beware If You Compare: Data Protection May Stop Approval Of A New Drug Submission
• The United States-Mexico-Canada Agreement (USMCA): What this means for Canadian IP law
• An introduction to Trade Secrets: What they are and why they matter to your business
• Ho-Ho Holiday Themed Patents
• Product advertising in the time of COVID-19: Health Canada and the Competition Bureau are on the lookout for misleading claims
• Entrepreneurs and Intellectual Property: Avoid These Thirteen Mistakes to Protect Yourself (Part 1 of 3)
• Entrepreneurs and Intellectual Property: Avoid These Thirteen Mistakes to Protect Yourself (Part 2 of 3)
• Entrepreneurs and Intellectual Property: Avoid these 13 mistakes to protect yourself (Part 3 of 3)
• Celebrating youth innovation!
• Canadian Patents: Federal Court confirms that the PM(NOC) Regulations provide a patent enforcement mechanism only in relation to products that are in fact available to Canadians
• Game-changers: Several sports-related patents that raised the bar (or at least raised our eyebrows)