Our Team

Find a professional

By expertise :

By keywords :




Claude-Armand Sheppard, Ad. E.

Telephone : (514) 878-2631

Fax : (514) 878-1865

Email : casheppard@rsslex.com


Claude-Armand Sheppard, Ad. E., is one of the pre-eminent members of RSS’s Litigation Group.

His practice includes most aspects of civil and commercial litigation, especially defamation, shareholder conflicts, and administrative and constitutional law, as well as claims by senior executives for wrongful dismissal. He frequently appears as head counsel in very significant disputes or as arbitrator of commercial disputes.

Representative Matters

Few litigators have a track record matching that of Mr. Sheppard. He appeared on numerous occasions before the Supreme Court of Canada in constitutional matters (judges’ independence, referral on the secession of Quebec, criminal immunity of a Crown corporation, religious neutrality of a municipality), as well as defamation matters and even criminal cases. He was behind the acquittals of Dr Henry Morgentaler, victories that ushered a change of policy that eventually led to the legalisation of abortion in Canada.

Throughout his career, Mr. Sheppard has been advisor to Royal Commissions, the Attorney General of Canada, parliamentary committees and various governments.

His recent activity is equally diversified:

  • Defending counsel in a series of damage claims in the wake of the Report of the Charbonneau Commission, that investigated the award and management of public contracts in the construction industry
  • Acting as mediator in several commercial disputes
  • Disputes involving testamentary trusts
  • Disciplinary proceedings against a member of the Bar and members of the accounting profession
  • Representing witnesses before public inquiry commissions
  • Arbitrating a dispute arising from a joint venture in the mining sector, and presiding an arbitration board in an industrial dispute
  • Shareholder disputes and the protection of minority shareholders
  • Defamation:
    • Defamation cases over the Internet and social media
    • Defending a publisher who allegedly held that certain people were agents of a foreign power paid to disseminate its ideology
  • Injunction to enforce a restrictive covenant in a “development and licence” agreement
  • Unjustified dismissal of the chair of a national corporation.


Designated Lawyer Emeritus by the Bar of Quebec in 2012

Rated as an expert on commercial litigation by Best Lawyers in Canada, a directory where he appears since 2006

Rated as “AV Preeminent” by Martindale-Hubbell, for his skills and ethics

Publications and Conferences

Mr. Sheppard is the author of several books and has published articles in the McGill Law Journal, the Revue juridique Thémis, the Revue du Barreau, The Canadian Bar Review and several other specialized periodicals.

He is regularly invited to speak on topics such as arbitration and Alternate Dispute Resolution or ethical issues facing lawyers and other professionals.

He is the author of numerous articles in legal periodicals and other works, including:

  • Régimes linguistiques canadiens et étrangers, a series of digests produced for the Commission of Inquiry on the Situation of the French Language and Linguistic Rights in Quebec (Éditeur officiel du Québec, 1974)
  • Inventaire critique des droits linguistiques au Québec, a 1,682-page, three-volume compendium on language rights for the Government of Quebec (Éditeur officiel du Québec, 1973)
  • Obstacles juridiques à la mobilité de la main-d’œuvre hospitalière (Éditeur officiel du Québec, 1973)
  • The Law of Languages in Canada, for the Royal Commission on Bilingualism and Biculturalism (1971)
  • L’organisation et la réglementation des professions de la santé et du bien-être au Québec, a 3,000-page, nine-volume report on the medical and paramedical professions for the Commission d’enquête sur la santé et le bien-être social (1970)

Community Involvement

Mr. Sheppard has made an exceptional contribution to the Montréal community, especially to its arts world, having chaired the Festival de Lanaudière for some 15 years and, previously, the Ballets Jazz de Montréal; he also sat on the executive committee of the Théâtre du Nouveau Monde


English, French, Spanish, German, Dutch


Bachelor of Laws (B.C.L.), McGill University, 1958

Bachelor of Arts, McGill University, 1955

Call to Bar

Quebec, 1959