James Duffy

James Duffy

Montréal, QC recognized lawyers icon Recognized in Ones to Watch since 2025
Lavery de Billy LLP

64 Best Lawyers awards

Lavery de Billy LLP logo

Awarded Practice Areas

Intellectual Property Law

Biography

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.

Lavery de Billy LLP

64 Best Lawyers awards

Lavery de Billy LLP logo

Overview

Client Testimonials

Awards & Focus

Recognized in Best Lawyers: Ones to Watch in Canada 2026 for work in:
  • Intellectual Property Law

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