Toronto Commercial Litigation Lawyer for Complex Business Disputes Strategic Advocacy for Complex Business DisputesCross-Border Litigation Between Canada and the USShareholder and Partnership DisputesInternational Arbitration and Commercial Resolution

Trusted counsel for Canadian and US businesses and corporations – practical, strategic, and resolution-focused.

Strategic Advocacy for Complex Business DisputesCross-Border LitigationShareholder DisputesInternational Arbitration

Trusted counsel for commercial litigation. Practical, strategic, and resolution-focused.

17+ Years Experience

Extensive experience handling cross-border commercial and corporate disputes for businesses in Canada

Partner at Cambridge LLP

Backed by an award-winning, pre-eminent law firm.

Qualified Arbitrator (Q.Arb)

Trained for strategic, binding resolution – a practical alternative when speed and confidentiality matter.

Proven Courtroom Advocate

Appears before the Ontario Superior Court of Justice and the Court of Appeal for Ontario

Focused Practice for Commercial and Corporate Litigation

Commercial & Business Litigation

Resolving complex breach of contract issues, joint venture breakdowns, franchisee claims, and other corporate disputes.

Resolving your complex business disputes

Cross-Border & International Disputes

Specialized expertise in enforcing foreign judgments in Canada, international arbitration, and managing Canada-US business litigation.

Protecting your corporate interests

Defamation Litigation

Representing individuals and businesses in libel, slander, and online defamation disputes. Strategic counsel for injunctions, take-down requests, and protecting reputation from damaging statements.

Protecting your reputation and business

Construction Litigation

Representing owners, contractors, and suppliers in all facets of construction law, including lien claims, delay disputes, and breach of trust.

Counsel for lien, contract, and delay claims

Debt Collection

Representing businesses in commercial debt recovery, judgment enforcement, garnishments, and creditor remedies to protect cash flow.

Strategies to recover what you are owed

Mortgage Enforcement

Advising lenders and property owners on foreclosure actions, power of sale proceedings, and remedies for default in secured lending.

Protecting your interests in real estate disputes

Partner-level experience. Client-focused results.

About Ruzbeh Hosseini

Ruzbeh Hosseini is a Toronto-based litigation lawyer and partner at Cambridge LLP, leading complex files within the firm’s Business and Cross-Border Litigation Groups. With extensive experience before the Ontario Superior Court of Justice and the Court of Appeal, he is the commercial litigation lawyer businesses and corporations trust with their most critical disputes.

His practice centres on commercial and corporate litigation – shareholder and partnership conflicts, construction disputes, and complex contract claims across Canada and the US. As a Qualified Arbitrator (Q.Arb), Ruzbeh brings a practical, strategic, and assertive approach to every file, whether the matter resolves in the courtroom, at mediation, or through arbitration.

Learn More about Ruzbeh

Strategic Insights – Legal Analysis – Expert Commentary

Latest News and Insights on Business Disputes

Timely analysis on commercial litigation, shareholder disputes, cross-border strategy, and the evolving landscape of business law in Canada and the US.