About Lesley
Lesley Caswell is a partner whose practice centers on patent clearance and validity opinions along with patent litigation, particularly impeachment actions and disputes under the PM(NOC) Regulations. Her work focuses on chemistry and pharmaceutical sciences, and she has significant experience counseling pharmaceutical companies on intellectual property and regulatory issues. She has worked on notable IP cases involving Teva, Sanofi-Aventis and Novopharm. She is a registered Canadian patent agent and belongs to both the American Bar Association and the Intellectual Property Institute of Canada. She earned her law degree from the University of Victoria in 1999 and holds an honours science degree in chemistry from the University of British Columbia.
Practice areas
Education & credentials
- Law school
- University of Victoria
- Undergraduate
- Honours Bachelor of Science (Chemistry), University of British Columbia, 1992
Listing compiled from public sources in July 2026. Confirm Lesley Caswell’s licence and standing in the Law Society of Ontario directory ↗