Over the course of her career,  Ms. De Mers has worked on several major transactions and supported entrepreneurs in all facets of their growth. She advises them on their corporate structure, governance, lobbying and strategic issues.

Ms. De Mers has developed a specialization in intellectual property and advises her clients on information technology, trademarks and the licensing and transfer of intellectual property rights.

Publications

• Recent developments in corporate law (2025) – Dissolution and liquidation of a Quebec joint stock company (co-authored with André Vautour)
• Recent developments in corporate law (2019) - Governance of commercial Crown corporations – Role and powers of the board of directors and management of Crown corporations, similarities and differences with private corporations (co-authored with André Vautour and Jean-François Maurice)

Representatives mandates

• Representation of Cultures Gen V Inc. in connection with the acquisition of Les Serres Royales Inc. (finalist for Transaction of the Year: Strategic Acquisition at the 2024 M&A Awards Gala)
• Representation of Premier Parks, LLC in the acquisition of two theme parks, Village Vacances Valcartier and Calypso of Groupe Calypso-Valcartier (finalist for Deal of the Year: Law Firm at the M&A Awards Gala 2023)
• Representation of NorthStar Earth & Space Inc. in a Series C equity and convertible debt funding round by five investors: Cartesian Capital Group, LLC, Investissement Québec, Luxembourg Future Fund, Telesystem Space Inc. and Luxembourg Space Sector Development SCSp (finalist for Deal of the Year: Private Equity at the M&A Awards Gala 2023)
• Representation of a plastic product designer and manufacturer in the acquisition of a competitor with a view to market consolidation
• Representation of a successful board game publisher in selling its business for over $80 million
• Representation of a major French publishing company in acquiring two board game publishers allowing it to enter the Canadian market
• Representation of Talent.com (formerly Neuvoo) in the implementation of its $53-million Series A funding by the Caisse de dépôt et placement du Québec to expand into new markets and bolster its platform with artificial intelligence
• Representation of an energy company in setting up a joint venture in the artificial intelligence field
• Representation of an aerospace start-up in several rounds of financing, drafting and negotiating data distribution and marketing agreements and acting as the company corporate secretary
• Representation of the Caisse de dépôt et placement du Québec in its nearly $160-million investment in two rounds of financing in Top Aces Inc., a company specializing in air combat training
• Representation of Groupe Sélection in the establishment of a consortium for the construction, development and ownership of Espace Montmorency, Laval’s largest mixed-use real estate project worth nearly $500 million
• Representation of an agricultural company in acquiring two competitors resulting in the creation of one of the largest agricultural companies in Quebec

Professional and community activities

• Graduate of The A Effect program, a 100-day training program designed to accelerate professional development
• Speaker and instructor for the LEAN STARTUP PROGRAM and the WOMEN LEAN STARTUP PROGRAM offered by McGill University’s Dobson Centre for Entrepreneurship
• Instructor of the corporate law course for members of the Association de planification fiscale et financière (introductory law course)
• Chair of the Member Relations Committee of the Young Bar of Montreal (2019-2020)
• Professor at the École du Barreau, 2020-2023