Olivier Therrien

Olivier Therrien is a partner in Gowling WLG's Montréal office, practising primarily in the area of commercial litigation. His practice focuses on complex commercial disputes involving various topics, with a focus on construction disputes, professional liability (engineers, geologists, architects, etc.) and contaminated sites. In addition to traditional litigation services, his clients appreciate his business-oriented approach and legal advice aimed at managing and mitigating litigation risks.

Olivier has been involved in complex litigation matters, including class actions and mass tort litigation. A recent example of Olivier's approach to complex litigation and recent success is discussed here. His practice currently focuses on manufacturer's, professional and builder's liability as well as environmental law, with a particular focus on contaminated sites.

His environmental law practice includes litigation, legal advice, regulatory work and risk management in connection with spill incidents, historical contamination, sale of contaminated sites, decommissioning and remediation obligations, change of use, brownfield redevelopments, as well as related real estate issues.

Olivier also practises in the following fields: general civil liability, consumer protection, franchise and distribution, competition law, trademarks, injunctions, and extraordinary recourses.

Olivier has had extensive experience appearing before most courts and has been involved in long trials.

His clients appreciate his skills as a trial lawyer (cross-examination, traditional and electronic discoveries, investigation, document management, management of expert evidence) as well as his negotiating skills when it comes to resolving litigation outside of court.

Olivier practises in English and French. He also speaks conversational Spanish.