Danielle Gauthier

François Barette is recognized as a leading litigator and tax lawyer. He represents diversified clients including individuals, corporations and trusts both in Canada and internationally. François’ practice extends well beyond tax litigation and he is asked to intervene in a range of civil and administrative matters. François advises clients on issues concerning federal and provincial income tax, sales tax, goods and services tax, excise tax, payroll taxes and proper...

Sébastien Bellefleur has extensive experience in business law, more specifically in securities, mergers, acquisitions, corporate governance and mining law. He also helps set up funding, whether in the form of loans or equity financings. He has drafted a number of complex transactions on behalf of public and private corporations, such as the purchase, sale, funding and restructuring of businesses throughout Canada and abroad. He has represented issuers and brokers in connection with ini...

Peter Castiel is Chair of the Firm and the Executive Committee, where he oversees the strategic direction, management and client service for the Firm. Peter is also focused on his mergers & acquisitions practice. He has extensive expertise in advising private equity funds, sovereign wealth funds and leading public and private companies in connection with complex acquisitions, divestitures and investments.

Melissa Tehrani is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising and Marketing Law. Melissa, who practices law in Montréal, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Melissa is held by other top lawyers in the same geographic and legal practice area.

Ouassim Tadlaoui is a partner in the Litigation and Dispute Resolution group. He focuses his practice on banking litigation, restructuring, bankruptcy, insolvency and construction surety bonds. He represents chartered banks and other financial institutions and alternative lenders as creditors, as well as certain debtors, in bankruptcy or restructuring mandates. He also represents and advises surety companies as well as national and international companies in matters of insolvency, bankruptcy ...

David is a partner in the Business Law group, and his practice focuses on corporate finance. He has extensive experience in private practice, in particular, bank financing, project financing, insolvency and private equity. He also acted as vice-president and corporate secretary of a large industrial project and advised many entities on governance issues. More recently, he has represented start-up companies, multinationals and investors involved in engineering, green industrial projects and in...

Chris Semerjian is a partner working in Fasken’s Litigation and Dispute Resolution Practice Group. A seasoned and versatile litigator, Chris is particularly active in complex litigation requiring the issuance of injunction orders to enforce non-compete clauses or to prohibit unfair competition practices. His expertise has led him to work in many Anton Piller cases involving the misappropriation of confidential information. He has also worked in cases before the Superior Court in intelle...

Frédéric Desmarais's practice covers all aspects of employment and labour law, with a focus on civil employment law matters and litigation, such as duty of loyalty and restrictive covenants. He is also knowledgeable in federal labour and employment law. Mr. Desmarais provides federal and provincial jurisdiction employers with strategic advice on how best to manage their workforces. He acts on behalf of employers before the appropriate authorities, including administrative tribun...

Jean-Yves Simard is a partner and a member of the board of directors of the firm, who specializes in commercial litigation, bankruptcy and insolvency, extraordinary remedies, and realizing on security. Mr. Simard acts in commercial litigation of all kinds, major insolvency cases, shareholder disputes, securities litigation, liquidation proceedings, injunctions, and cases involving the realization of movable and immovable security. At conferences organized by the Canadian Bar Association, Insi...

Bernard Boucher is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Financial Restructuring Law. Bernard, who practices law in Montréal, Quebec, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Bernard is held by other top lawyers in the same geographic and legal practice area.