Mortimer Freiheit

Marc-Olivier Plante is a member of our tax team. His practice encompasses all tax aspects of mergers and acquisitions, corporate financing, business reorganizations and international transactions. He also handles matters relating to estate planning and transfers of family businesses. Mr. Plante also assists a wide array of taxpayers in disputes with the tax authorities, particularly in income tax and consumer tax matters. He also advises taxpayers in connection with voluntary disclosures and ...

My practice is centered on transactional and corporate matters, with an emphasis on the technology sector. I developed my expertise with two preeminent national law firms as well as in-house roles with innovative startups and, more recently, with a rapidly expanding Montreal law firm. Before embarking on my legal career, I worked in the banking industry across Canada, the United States and France, acquiring substantial corporate experience. Joining Blue HF is an opportunity to continue to bui...

Mariella Lo Papa is Co-Leader of the Québec Real Estate Law practice group and Co-Leader of the firm’s Real Estate Law practice group. She has over 25 years of experience focused on commercial leasing of all asset classes, acquisitions and dispositions of commercial real estate, and development projects. Mariella has extensive transactional experience across a variety of industries and asset classes, on behalf of real estate developers, private institutional investors, both local...

Sébastien Vézina is a partner in the firm’s Business Law group and the Head of the Sports and Entertainment Law team and recognized by the Best Lawyers directory in Sports Law. Sébastien’s expertise lies in his exemplary ability to negotiate complex commercial agreements, in accordance with the highest standards of the legal industry. Recognized by the clients for his strong interpersonal skills, keen business sense and availability, he always adapts his strat...

Stéphanie Pépin is a partner in the tax group of our Montréal office, focusing on tax planning and tax litigation. Stéphanie is recognized for her understanding of the business environment and her in-depth knowledge of complex tax issues. She advises both individuals and companies on structuring their affairs in a constantly evolving legal environment, with a focus on tax optimization and compliance with current laws. Her analytical and strategic approach enables h...

Étienne Dubreuil’s expertise applies to structuring and negotiating complex transactions, whether in international partnerships or partnerships between public sector and private sector. He specializes in matters dealing with the marketing of intellectual assets and the outsourcing of services.

Cassandre Louis is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law and Municipal Law. Cassandre, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cassandre is held by other top lawyers in the same geographic and legal practice area.

Julie Desrosiers practices intellectual property litigation. Julie regularly acts on behalf of high-tech corporations and advises clients on injunctions, seizures and proceedings to protect their intellectual property, trade secrets and strategic information. Julie’s practice is currently focused almost exclusively on patent litigation. A seasoned litigator, she has been involved in several important patent infringement cases in the pharmaceutical sector. She appeared before the Supreme...

Partner - Leader of the Business Law Group René Branchaud, partner, practises in the fields of securities, mergers and acquisitions, as well as corporate law. With more than thirty years’ experience, he advises companies on matters such as incorporation and organization, the drafting of shareholder agreements, private placements, public issues, going public, dispositions, and takeovers. His services are in demand with European entrepreneurs and investors, primarily in France, wis...

Marilyn Piccini Roy is a Partner and Head of the Estates, Wills and Trusts Group. Her practice focuses on wealth management, estates, trusts, regimes of protective supervision and elder law. She serves as counsel to private clients, trust companies, philanthropists, as well as individual and institutional trustees. Recognized as a leading lawyer in trusts and estates, wealth management and tax planning, Marilyn is also well known for her ability to interact with a wide network of professional...