Guillaume is developing a broad litigation practice.
He acts on various complex litigation matters, many of which have public law implications. He has also been involved in class actions.
Aside from acting on litigation matters, Guillaume is frequently called upon to advise clients on the legislative and regulatory framework governing their business.
Association québécoise des pharmaciens propriétaires
Acting for the Association québécoise des pharmaciens propriétaires as an intervener in a litigation with the Régie de l'assurance maladie du Québec on the constitutionality of section 22.6 of the Health Insurance Act.
Formula E Operations Ltd.
Acting for Formula E Operations Ltd. (FEO) in connection with its claims arising from the City of Montréal's decision to cancel the Montréal ePrix. This includes asserting FEO's claims against the City of Montréal and in the bankruptcy proceedings of Montréal C'est Électrique, a non-profit corporation set up by the City for the purposes of acting as promoter of the Montréal ePrix.
Acted for the plaintiffs in a class action involving all Québec parents who were required to pay fees for the purchase of school books or other didactic material even though these fees should have been assumed by the school boards.
Acting for O'Leary Funds, one of the largest unitholders of Boralex Power Income Fund (BPT), in connection with its opposition to the takeover bid made by Boralex Inc. for the outstanding units of BPT. O'Leary is challenging the legality of the takeover bid and is seeking an increased consideration for its units taken up in connection with the takeover bid.
New Beacons of Administrative Law: Top Court Reviews the Approach to Judicial Review of Administrative Decisions
Jan. 14, 2020 - The Supreme Court of Canada (SCC) recently rendered its much-awaited decisions in Canada (Minister of Citizenship and Immigration) v Vavilov and companion appeals. Upon granting leave to appeal, the SCC had announced that these appeals would “provide an opportunity to consider the nature...
Québec Superior Court Enforces Right to Collective Bargaining of State Employees
Oct. 08, 2019 - The Québec Superior Court (QSC) recently struck down as unconstitutional back-to-work legislation (Bill 1271) aimed at the Québec government’s advocates and notaries. The decision, released on September 18, 2019, builds on the recent case law of the Supreme Court of Canada which declared that the...
Québec Court of Appeal Says Current Civil Jurisdiction of the Court of Québec Is Unconstitutional
Sept. 17, 2019 - A seven-member panel of the Québec Court of Appeal (QCA) recently rendered an important decision regarding the civil and administrative jurisdiction of the Court of Québec (CQ), a provincial court. The decision follows a reference submitted to the QCA by the Québec government in the wake of a legal...
“Les honoraires en demande en matière d’actions collectives : comment éviter de jouer à l’apprenti-sorcier en vue de moduler le comportement des avocats”, co-author
May 03, 2019 - Recent Developments in Québec, Canada and the United States, Vol. 455 (National Conference on Class Actions)
Read this article (in French).