Canada’s Premier IP Litigation Firm

Since its inception in 2013, Aitken Klee has consistently been recognized as one of the leading intellectual property litigation firms in Canada, with numerous awards and nominations built on a track record of success.


Internationally Recognized Excellence

We are internationally ranked and have been lead counsel in many precedent-setting decisions, including at the Supreme Court of Canada. We have twice won a prestigious patent case of the year award and won the impact case of the year in 2023.

Unrivaled Track Record

We are trial lawyers with extensive experience in all areas of patent, trademark, and copyright litigation. Our unrivaled track record of successfully representing pharmaceutical manufacturers in patent litigation under both the Patent Act and the Patented Medicines (Notice of Compliance) Regulations is built on a history of winning cases that other counsel have previously lost.

Pioneers in Patent Law

We’ve taken on some of the most challenging cases, including successfully addressing numerous compound, formulation, and use patents on blockbuster drugs. Our lawyers have prevailed in a number of pivotal cases that continue to shape Canadian patent law, including defining the requirements of written description, clarifying the meaning of “inventive concept”, and prevailing on the only s. 53 invalidity defense (misleading statements in a patent) in the last 40 years.

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Our team is dedicated to addressing your legal needs with professionalism and efficiency.
Contact us today to schedule a consultation and take the first step toward resolving your legal matters.

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