James Duffy

James Duffy


Lavery de Billy, L.L.P.

Recognized since 2025

Montréal, Quebec

Practice Areas

Intellectual Property Law

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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.

Location
  • Suite 4000
    1, Place Ville Marie
    Montréal, QC H3B 4M4
    Canada

Lavery de Billy, L.L.P.
Headquarters: Montréal, Quebec

66 The Best Lawyers in Canada awards

22 Best Lawyers: Ones to Watch in Canada awards

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Recognized in Best Lawyers: Ones to Watch in Canada 2025 for work in:
  • Intellectual Property Law

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