Aitken Klee LLP
Automatically compiled listing. Details may contain errors.8 lawyers · Established 2013 · City of Ottawa
One of 436 law firms listed in Ottawa, and one of 38 handling Intellectual Property.
About Aitken Klee LLP
Aitken Klee LLP is a small Ottawa law firm that handles intellectual property litigation exclusively. David Aitken and Marcus Klee founded the firm in 2013, and it's built its practice around patent, trademark, and copyright disputes, with particular depth in pharmaceutical patent cases under the Patent Act and the Patented Medicines (Notice of Compliance) Regulations. The firm's lawyers have argued cases at the Supreme Court of Canada, the Federal Court of Appeal, and the Federal Court, and have represented pharmaceutical manufacturers in disputes over compound, formulation, and use patents on brand name drugs.
The firm grew in 2014 when litigators Jonathan Stainsby, Bill Mayo, and Lesley Caswell joined, having already won a 2007 Canadian IP case of the year award together. Aitken Klee's docket also covers biopharmaceutical and medical device litigation, disputes in the natural resources and technology sectors, and proceedings before the Canadian Intellectual Property Office. It's a small, focused firm, now nine lawyers, all working from a single office in downtown Ottawa.
Practice areas
Good to know
Wheelchair accessibleLawyers 8
This firm’s lawyers at a glance
- Called to the bar
- 2002–2007 · median 21 years in practice 2 of 8 lawyers
- Law schools
- McGill University, Osgoode Hall Law School, University of Ottawa, University of Toronto, University of Victoria 5 of 8 lawyers
Who handles what
Where to find them
180 Elgin Street, Suite 1400, Ottawa, Ontario, K2P 2K3 · 613-695-5858
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Technology & StartupsThis listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗
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