Toronto Commercial Litigation Lawyer
Strategic advocacy for businesses and individuals in complex commercial disputes across Ontario.
Our commercial litigation team has represented clients in the Ontario Superior Court of Justice, the Commercial List, and the Ontario Court of Appeal in disputes ranging from contested loan agreements and share pledge enforcement to cross-border manufacturing claims. In Atlas (Brampton) v. Canada Grace Park, 2021 ONCA 221, Paul Starkman successfully enforced a $1.8 million share pledge foreclosure, with the Court of Appeal dismissing the opposing party’s appeal. In Wei v. Ye-Hang Canada, 2026 ONCA 180, Calvin Zhang defended a summary judgment involving a disputed loan and questions of reverse corporate veil piercing at the appellate level.
Contract Disputes & Business Litigation
Contract disputes are the backbone of commercial litigation. When a business partner fails to honour a signed agreement, when payment obligations go unmet, or when a joint venture unravels, the financial consequences can be devastating. Our firm has litigated hundreds of breach-of-contract actions in the Ontario Superior Court of Justice, from straightforward debt recovery claims to multi-million-dollar disputes involving complex commercial arrangements.
We advise on the full lifecycle of a contract dispute: pre-litigation demand strategy, preservation of evidence, interim relief where urgent, and trial or mediation as circumstances require. Our goal is always to achieve the most efficient resolution — whether that means a negotiated settlement on favourable terms or a decisive judgment at trial.
Injunctions & Emergency Court Orders
Some commercial disputes require immediate court intervention. When assets are being dissipated, when a former employee or partner is breaching restrictive covenants, or when irreparable harm is imminent, an interlocutory injunction can be the difference between preserving your rights and losing them entirely. Our firm has extensive experience in urgent motion practice before the Ontario Superior Court, including Mareva injunctions to freeze assets, Anton Piller orders for preservation of evidence, and certificates of pending litigation to protect interests in real property.
We understand the strict legal test for injunctive relief — theRJR-MacDonald framework — and we know how to build the evidentiary record that Ontario courts require on these critical motions.
Ontario Courts
Our commercial litigation lawyers appear regularly before the Ontario Superior Court of Justice, the Divisional Court, and theCourt of Appeal for Ontario. We have handled matters at every stage — from initial pleadings and documentary discovery through examinations for discovery, pre-trial conferences, and multi-week trials. Our team has also represented clients in private arbitrations under the Ontario Arbitration Act, 1991 and in mediations that have resolved disputes efficiently and favourably.
Three decades of continuous practice in Ontario commercial litigation means we have seen virtually every type of business dispute, and we bring that institutional knowledge to bear for every client we represent.
The Complete Guide to Commercial Litigation in Ontario
For a comprehensive overview of commercial litigation in Ontario — including the court system, litigation process, available remedies, costs, limitation periods, and strategic considerations — read our detailed 12-part legal guide.
Read the Complete Guide to Commercial Litigation in OntarioRelated Legal Insights
Read our articles on key topics in commercial litigation:
Facing a Business Dispute? Act Before Limitation Periods Expire
Ontario’s two-year limitation period means early legal advice is critical. Whether you need to enforce a contract, respond to a shareholder oppression claim, or seek an urgent injunction, contact our commercial litigation team to assess your options.
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