Ariane-Sophie Blais

Lawyer, Partner - Quebec City

Québec Bar 2011
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Ariane-Sophie is a partner at the Québec City offices of Langlois Lawyers. She is part of the litigation group and her practice focuses mainly on civil and commercial litigation, specializing in class actions, shareholder disputes, extraordinary recourses and professional liability. She engages in complex and wide-ranging litigation in a variety of fields. Ariane-Sophie’s practice centres on health law, environmental law, consumer law and construction law.

Ariane-Sophie advises businesses on issues linked to governance and reputational risk. She pleads regularly before Québec’s main civil and administrative judicial bodies, whether at first instance or on appeal. Providing counsel to her clients on issues linked to professional or commercial interests, Ariane-Sophie promotes an approach based on pragmatism, aimed at reaching creative and effective outcomes.


National program (common law), University of Ottawa, 2008

Licence in civil law, University of Ottawa, 2007

Degree in linguistics, Laval University, 2003

Representative Work

  • Victory for Langlois in an environmental class action

    Langlois Lawyers successfully represented their client, Compagnie d’Arrimage de Québec (“CAQ”), a Quebec City company specializing in handling solid bulk cargo, in a class action regarding neighbourhood disturbances related to dust. A group of Limoilou residents was suing the CAQ and the Québec Port Authority for more than $350 million in compensatory and punitive damages, as well as a permanent injunction to change their operations.

Dispute between shareholders of a major construction company in Trois-Rivières
In connection with oppression-remedy proceedings brought by a minority shareholder, defended the interests of the majority shareholders.    

Represented Compagnie d’Arrimage de Québec in two environmental class actions
Defended against two class actions brought by citizens of the Quebec City borough of Limoilou against port authority Administration portuaire de Québec and Compagnie d’Arrimage de Québec (Quebec Stevedoring Company Ltd.).




Professional Associations

Since 2012 – Chair of the Board, Rouge et Or Rugby Club

Since 2012 – Member of the Association des femmes d’assurance de Québec

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