Miller Thomson


Head Office Address:
40 King Street West, Suite 5800
Toronto, ON, M5H 3S1

Telephone:+1 416 595 8500
Fax:+1 416 595 8695

Contact us

Miller Thomson LLP is one of Canada’s leading national business law firms with close to 550 lawyers. We consistently deliver the highest quality advisory and advocacy skills and expertise required by international clients doing business in Canada. We have more Canadian locations than any other national firm, allowing our lawyers to provide our clients with valuable local knowledge. More specifically, with offices in Montreal, Markham, Vaughan, Toronto, Kitchener-Waterloo, Guelph, London, Regina, Saskatoon, Calgary, Edmonton, and Vancouver, we are uniquely positioned to provide ‘on the ground’ insight and knowledge from the country’s key economic hubs, and under both the common law and civil law systems in Canada.

Miller Thomson’s national advocacy practice comprises close to 200 litigators, organized around a comprehensive range of sub-specialties. Our expertise covers complex commercial litigation, class actions, construction litigation, environmental litigation, insurance defence, IP litigation, securities litigation, shareholder disputes, tax litigation, insolvency, and labour & employment disputes, among other areas of litigation support. The national group has extensive experience acting for a wide range of clients in all industry segments in trial proceedings, court applications, arbitrations and appeals at the provincial and federal levels. These clients range from sole proprietorships and individuals to some of the largest and most recognized national and international corporations operating in Canada.

Our litigators look for opportunities for efficient and expedient dispute resolutions. In this regard, our litigators are experienced in mediation and arbitration proceedings of all types, whether required as part of the litigation process or undertaken pursuant to an agreement with the other side to a dispute. 

The Group also draws on the firm’s discovery capabilities. Our litigators adopt procedures to drive greater case management and discovery efficiency, thereby mitigating the resource intensive, often costly document production phase of litigation.   

We have extensive experience acting for clients in litigation concerning:

  • Commercial contracts 
  • Class actions 
  • Constitutional challenges
  • Employment and human rights 
  • Real property disputes
  • Environmental 
  • Tax
  • Antitrust
  • Tort law
  • Civil or extra contractual liability 
  • Construction contracts, liens, claims
  • Patent and trademark infringement
  • Insolvency
  • Professional liability claims
  • Products liability claims 
  • Defamation
  • Injunctions
  • Interim orders and other relief sought on an urgent basis
  • Shareholder disputes
  • Securities
  • Regulatory
  • Disciplinary
  • Penal and criminal
  • Directors’ and officers’ liability
  • Breach of fiduciary obligations