# Cassels Brock & Blackwell LLP

> Cassels Brock & Blackwell LLP is a Canadian business law partnership founded in Toronto in 1888. It sells transaction, advocacy, and advisory work to companies, investors, financial institutions, governments, Indigenous groups, universities, and high-growth ventures, with unusually visible depth in mining, franchising, entertainment and intellectual property, Aboriginal law, and mid-market deals. Its growth playbook is conservative in timing but entrepreneurial in execution: follow proven client demand, assemble multidisciplinary teams around regulated sectors, and redesign the institution when old assumptions stop matching how people work.

- **Founded:** 1888
- **Headquarters:** Toronto, Canada
- **Team size:** Approximately 880 employees in the supplied record; Chambers' 2026 profile lists 186 partners, 150 associates, and 21 counsel and advisors.
- **Products:** Transactions, Advocacy, Advisory, Sector teams
- **Notable:** Founded in October 1888 and operated from Toronto alone until opening Vancouver in April 2012., Chambers Canada 2026 listed 26 ranked departments and 72 ranked individuals; Cassels reported Tier 1 recognition in Aboriginal law, cannabis, franchising, media and entertainment, and mining., Best Law Firms in Canada 2026 ranked Cassels nationally in 35 areas, including six national Tier 1 practices.

## Products & services

- **Transactions** — Corporate, M&A, capital-markets, private-equity, finance, tax, real-estate, restructuring, and cross-border counsel for buyers, sellers, issuers, investors, lenders, boards, and growth companies.
- **Advocacy** — Commercial litigation, class actions, securities disputes, IP litigation, regulatory proceedings, appeals, investigations, and insolvency advocacy.
- **Advisory** — Ongoing guidance across competition, employment, data privacy, Indigenous law, environmental and municipal regulation, international trade, governance, tax, and market entry.
- **Sector teams** — Multidisciplinary practices in mining, energy, infrastructure, franchising, entertainment and sports, cannabis, higher education, financial services, technology, and major projects.

## Achievements

- Founded in October 1888 and operated from Toronto alone until opening Vancouver in April 2012.
- Chambers Canada 2026 listed 26 ranked departments and 72 ranked individuals; Cassels reported Tier 1 recognition in Aboriginal law, cannabis, franchising, media and entertainment, and mining.
- Best Law Firms in Canada 2026 ranked Cassels nationally in 35 areas, including six national Tier 1 practices.
- Cassels reported 100 lawyers recognized in the 2026 Canadian Legal Lexpert Directory, its strongest showing at that time.
- In H1 2025 league tables, Cassels ranked first among comparable Canadian national firms with fewer than 350 lawyers across several M&A and private-equity volume and value measures.
- The firm acted for underwriters on Hemlo Mining's approximately C$678.5 million 2025 private placement connected to the Hemlo Gold Mine acquisition.

## Latest updates

- **2026-06** — Cassels' June IP briefing covered new CRTC streaming expenditure and discoverability policies, copyright and AI developments, and 2026 IP rankings.
- **2026-03** — The firm partnered with University of Toronto Press on a C$10,000 annual prize for Canadian student scholarship on class actions.
- **2026-03** — Cassels joined Classroom Champions' corporate partner network to support youth education and well-being programming across Canada.
- **2026-01** — Eleven lawyers were admitted to the partnership across Toronto, Vancouver, and Calgary.
- **2025-11** — IFLR1000's 2025 edition recognized 40 Cassels lawyers in financial and corporate practices.
- **2025-10** — Former federal minister and prime-ministerial chief of staff Marco Mendicino joined as senior counsel and strategic advisor.

## Links

- Website: https://cassels.com
- LinkedIn: https://www.linkedin.com/company/cassels-brock-blackwell-llp
- Twitter/X: https://twitter.com/casselsbrock
- Instagram: https://www.instagram.com/cassels_law/

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Last updated: 2026-08-23