Kathleen Lemieux


[email protected]

Kathleen specializes in trademark prosecution and enforcement, and commercial transaction involving intellectual property rights.

Kathleen also advises on a broad range of IP license agreements, commercial transactions involving IP, and intellectual property protection and strategy. Kathleen regularly negotiates and drafts agreements involving development, licensing (including through subscription), distribution and the purchase and sale of goods and services that touch upon IP rights. 

As a lawyer, trademark agent and holder of the Osgoode Certificate in Intellectual Property (IP) Licensing, Kathleen is able to provide businesses with practical intellectual property advice, including on intellectual property protection, registration, and licensing (with a particular focus on trademarks and copyright). Clients span a broad range of industries, including pharmaceutical and biotechnology, consumer healthcare, food and beverage, and clothing and footwear.

Kathleen is a former member of BLG's Partnership Board and co-leads BLG's Trademark practice. She practices in both English and French.

Beyond our Walls

Professional Involvement

  • Committee member, International Trademark Association (INTA)
  • Member, Licensing Group, American Bar Association
  • Member, American Intellectual Property Law Association, former Co-Chair of IP Practice in Europe Committee and former Co-Chair of Trademark and International Treaties Committee
  • Member, Licensing Executives Society
  • Former member of Trademark Committee, Marques

Awards & Recognitions

  • Recognized in the 2024, 2021, 2019 edition (and since 2015) of World Trademark Review's WTR 1000 - The World's Leading Trademark Professionals (Enforcement and Litigation; Transactions).
  • Recognized in the 2024 edition (and since 2021) of The Best Lawyers in Canada (Intellectual Property Law) and as 'Lawyer of the Year' for 2023.
  • Recognized in the 2023 and 2022 editions of the Canadian Legal Lexpert Directory (Intellectual Property).

Bar Admission & Education

  • Ontario, 1997
  • L.LL, University of Ottawa, 1995
  • LLB, University of Ottawa, 1994
  • BA, McGill University, 1991