Languages: French, English
Quebec Bar — 2022
Marie-Hélène joined IMK in 2019. After having obtained her civil and common law degrees from McGill University, she clerked for Justice Nicholas Kasirer at the Supreme Court of Canada.
Marie-Hélène also completed a Masters in Law at the University of Oxford (with distinction), as a McCall MacBain scholar. Her dissertation addresses the challenges arising at the intersection of administrative law and artificial intelligence, from a comparative law perspective. The Oxford Faculty of Law awarded her the Ralph Chiles Prize in Comparative Human Rights upon graduation. She was also awarded the Clifford Chance Prize for the best performance in the MJur programme at Oxford.
At IMK, Marie-Hélène is involved in a variety of files and is particularly interested in constitutional, administrative and appellate litigation.
MJur, University of Oxford, 2023 (Distinction)
BCL/LL.B., Université McGill, 2020 (Dean’s Honours List)
Law Clerk to the Honourable Nicholas Kasirer at the Supreme Court of Canada, 2021-2022
Student-Clerk to the Honourable Nicole Duval Hesler at the Court of Appeal of Québec , 2019-2020
Marie-Hélène Lyonnais, “Performing Reasonableness Review in the Digital Age: Challenges and Ways Forward”, Canadian Journal of Administrative Law & Practice, 37-1 (2024)
Marie-Hélène Lyonnais, “La représentation du Québec à la Chambre des communes : le dilemme de demain”, Journal of Parliamentary and Political Law – Special Issue (2019), Carswell, p. 39
