Elysium Legal

About Elysium Legal

Elysium Legal is a small bilingual litigation firm focused on public and business law, founded by Guillaume Sirois, who's licensed to practise law in both Ontario and Quebec. The firm is based in Montreal, with appointment-only offices in Ottawa and Toronto that let it meet with clients in both provinces in English and French. Before starting the firm, Sirois worked in public law, including time spent defending governments in court and investigating them, and has taken all levels of government to court across the country.

The practice splits its work into two streams. For businesses, it handles tax defence against the Canada Revenue Agency and Revenu Quebec, business formation and regulatory compliance, and administrative defence before regulators. For individuals, organizations, and communities, it takes on Charter and human rights matters, environmental and land use disputes, and public interest litigation, much of it through judicial review of government decisions. The firm says it offers free initial consultations and works on fixed fees or block fee arrangements for defined stages of a file, rather than open ended hourly billing.