Dr. Leah Theriault

Assistant Professor

Phone Number: 
+1 807-346-7804
Office Location: 
Office Hours: 
Mon 10:30 am - 12:30 pm
Academic Qualifications: 

SJD, University of Toronto, Faculty of Law
LLM, UC Berkeley School of Law
JD, University of Toronto, Faculty of Law
BSc, University of Toronto (Chemistry)

Previous Teaching/Work: 

Prior to joining the Bora Laskin Faculty of Law, Dr. Theriault was the Associate Director of the Centre for Innovation Law and Policy at the University of Toronto Faculty of Law, and the Executive Director of Digital Media at the Crossroads.

While completing her doctorate, Dr. Theriault was a visiting lecturer at Washington University in St. Louis, where she taught copyright, Internet law, and advanced intellectual property courses; she has also taught at the University of New Brunswick Faculty of Law (property, community planning, leaseholds) and the Université de Sherbrooke (contracts and property).

Research Interests: 

Dr. Theriault’s research focuses on the role of the concept of possession in structuring legal and social relations. This includes all facets of its structural significance in real property law, e.g., the development of servitude law, and the historical evolution of the common law forms of action; as well as its relevance to modern intangible property regimes, such as the first sale doctrine in copyright law. Her doctoral thesis, A User Innovation Theory of the Numerus Clausus, which examined the role of possession in fostering both high-tech and low-tech innovation, was jointly awarded the Alan Marks Medal for best graduate thesis.

Forthcoming: Property Law, Cases & Materials, Jim Phillips & Leah Theriault, Spring 2021, LexisNexis Canada.


She is a member of the Bar of Ontario; the International Association on Planning, Law and Property Rights; and the Osgoode Society for Canadian Legal History.

Current committee work: Chair, Diversity and Inclusiveness Committee

Past committee work: Library and Technology Committee, Natural Resources and Environmental Law Committee


Fall Courses, 2019-2020:
Business Organizations
Real Estate

Winter Courses, 2019-2020:
Property A
Property B
Real Estate

Past courses: Contracts