Cassels Brock & Blackwell

Cassels Brock & Blackwell is one of Canada's largest independent business law firms, and its cannabis group is a long-standing cross-practice team advising licensed producers, ancillary businesses, and investors. Work spans Health Canada licensing and regulatory compliance, M&A and corporate restructuring, equity and debt capital markets financings, go-public transactions, and intellectual property/branding matters (including celebrity-endorsement deals). The group also advises private equity funds, device manufacturers, and research firms operating alongside licensed producers, and regularly handles matters that cross into U.S. cannabis markets for Canadian public companies.

Cassels is headquartered in Toronto, Ontario, with additional Canadian offices, and ranks among Canada's top firms in Chambers Canada, The Legal 500, and Best Lawyers. The cannabis group sits within the firm's broader corporate/securities and M&A practices rather than as a freestanding boutique — a structure typical of full-service Canadian business law firms serving the regulated cannabis sector.