David A. Ruston

Partner, Group Head of Patents (Canada), Canadian Patent Agent at Marks & Clerk

Intellectual PropertyIntellectual Property
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About David

David Ruston leads the Canadian patent practice at Marks & Clerk, specializing in mechanical and electrical engineering patents with more than three decades of experience.

Practice areas

Intellectual Property

Listing compiled from public sources in August 2026. Confirm David A. Ruston’s licence and standing in the Law Society of Ontario directory ↗