Osler, Hoskin & Harcourt LLP

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

Gold - Firms: litigation

Recommended - Firms: transactions

Silver - Firms: prosecution

“Osler is a safe pair of hands and can be trusted to make the right decisions. Their advice is prompt and practical, and the crew is highly professional from start to finish. They have one of the top patent litigation teams in the country, especially in the pharmaceutical space, and Bradley White is a decorated lawyer and the go-to for pharmaceutical companies when things get heated.” White, Nathaniel Lipkus, Faylene Lunn and Geoffrey Langen have been continuing to provide strategic assistance in a number of separate disputes for Teva, several of which are currently ongoing. The team’s victory in the Rivaroxaban case – blood clot prevention medicine – was a momentous result that will have ripple effects across generic pharmaceutical industry. Outside of the life sciences, Vincent de Grandpré successfully defended Awesense, an energy transition platform, in an infringement action over the use of technology for detecting power losses in an electrical distribution grid. Joining the stellar line-up in February 2023 is former Fasken lawyer Jean-Nicolas Delage. He has all the right tools to enhance the value of his clients’ businesses, supporting emerging and high-growth companies with their IP strategy and transactions. 

Firm Profile

Distinguished from many competitors, Osler, Hoskin & Harcourt LLP provides leading coverage of all areas of IP law in Canada, including prosecution and litigation of patents and trademarks, copyright and commercial IP advice, including licensing and transactions.

With an integrated network of offices in Toronto, Montreal, Calgary, Ottawa and Vancouver, Osler’s team of more than 460 lawyers, patent agents and trademark agents has the breadth and depth of experience to help solve clients’ problems and provide the answers that they need in all areas of business law, including intellectual property.

Strength in intellectual property

Our top-ranked IP team is renowned for its diverse strengths, including IP litigation and patent disputes. We have acted as counsel in complex litigation in every field of intellectual property and before every level of the Canadian courts, and have coordinated and managed prosecution and litigation strategies through multiple jurisdictions. Our international reputation for excellence in Canadian IP patent litigation has been built on our winning litigation record, representing some of the world’s largest generic pharmaceutical, technology, biotech, life sciences, electronics, energy, consumer products and many other international and domestic innovators.

We have extensive experience in drafting, filing, prosecuting and maintaining patent and industrial design applications in Canada and the United States, including for Canadian and multinational companies in medical devices, electronics, consumer products, chemistry, biotechnology, pharmaceuticals, sports, food services and other sectors. We also supervise the filing and prosecution of patent applications outside North America on behalf of clients through our network of foreign associate law firms. The Osler IP team also serves a growing and robust international practice, representing the Canadian patent interests of foreign companies.

Osler’s integrated team of professionals is involved in preparing numerous patent infringement and validity opinions, drafting patents and advising on the exploitation of IP rights with a coordinated worldwide strategy consistent with clients’ commercial business. Our exposure to complex litigation matters has proven invaluable in our drafting and prosecution practices – we are well aware of the many pitfalls to avoid.

Our IP group is growing each year and retains the best talent coming from Canada’s top universities and business. We have experienced minimal interruptions to our practice during the Covid-19 global pandemic. In fact, we have continued our growth of recent years and built on our talented associate group in a very competitive recruitment market.


Osler’s patent team has been recognised as one of the leading practices in Canada by IAM Patent 1000, Chambers Canada, IP Stars, The Canadian Legal Lexpert Directory, The Legal 500 and Benchmark Canada.



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