Keltie Sim Luft
Partner, Toronto
Barrister and Solicitor,
Patent and Trademark Agent


Phone: 416.593.5514
Fax: 416.591.1690
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Ontario Bar 1984
  • Acadia University B.Sc. Hons. (Mycology) 1978
  • University of Western Ontario LL.B. 1982
  • Registered Trademark Agent 1984
  • Registered Patent Agent 1990
  • Registered to practise before the United States Patent and Trademark Office

Collaborative approach and trademark procurement expertise earns trust of clients and international recognition

Keltie’s unparalleled expertise in trademark procurement and her inclusive, collaborative approach have earned the trust of clients and year-after-year, international recognition as a leader in IP law. Among her leadership roles, Keltie heads the firm’s Marketing & Advertising practice, enabling clients to maximize the value of their efforts while complying with Canadian regulations. Keltie is the firm’s Chair, the Chief Inclusion Officer and a member of the Canadian Law Firm Diversity & Inclusion Network.

Leading the Marketing & Advertising practice

Recognized in The Best Lawyers in Canada for IP law since 2011, Keltie is known for her communication skills and client responsiveness. She has a superior understanding of all aspects of the trademark procurement process, including providing availability and infringement opinions; filing and prosecuting applications; handling trademark oppositions, cancellations and enforcement matters; managing portfolios; and drafting and reviewing licensing, co-existence, joint venture and settlement agreements. Currently, Keltie leads the Marketing & Advertising practice, which focuses on Canadian product marking and labeling, assessment of advertising claims and advice regarding product promotion, e-commerce and social media campaigns.

An exceptional career of diverse experience and recognition

Throughout her exceptional career, Keltie has advised a diverse range of clients in pharmaceuticals and nutraceuticals, food manufacturing and distribution, personal care, financial services, clothing, publishing, industrial manufacturing and construction on domestic and international clearance, prosecution, portfolio management, acquisition and licensing of trademarks.

Among her many recognitions, Keltie has been spotlighted as an 'IP Star' for Trademark & Copyright by Managing Intellectual Property since 2014 and Who's Who Legal: Trademarks since 2009. Keltie is a Fellow of IPIC, member of INTA, member of MARQUES and a member of their Regulatory Team. In her 2018 recognition in Expert Guides: Women in Business Law, Keltie is noted for her “expertise and [the] quality of her work.”

Rankings and Recognition

  • Recognized in the Managing Intellectual Property IP Stars Handbooks as one of the Top 250 Women in IP for 2019
  • Recognized in the 2018 edition of World Trademark Review 1000 – The Definitive Guide to Trademark Legal Services under prosecution and strategy
  • Recognized annually in The Best Lawyers in Canada under Intellectual Property Law since 2011 and under Advertising and Marketing Law since 2018
  • Selected to appear in The Canadian Legal LEXPERT® Directory under Intellectual Property since 2009
  • Recognized annually since 2014 in Euromoney's Expert Guides: Women in Business Law as a top female legal practitioner in the area of trademarks
  • Recognized in Euromoney’s Expert Guides: Guide to the World's Leading Trademark Law Practitioners since 2014
  • Recognized annually as an 'IP Star' since the inaugural edition in 2014 of Managing Intellectual Property’s IP Stars Handbook: Trademark & Copyright
  • Recognized annually in Who's Who Legal: Trademarks since 2009
  • Recognized annually since the inaugural edition in 2010 of Who's Who Legal: Canada under Trademarks
  • Received a Licensing Executives Society award for significant contribution to the organization
IP Management & Strategic Counselling
Marketing & Advertising
Copyright & Media
Licensing & IP Transactions
Domain Names & Internet Law

Procter & Gamble v. Colgate-Palmolive Canada Inc. (2007) — Representing Colgate, successfully resisted opposition to Colgate application to register GREEN/WHITE/BLUE toothpaste design.

Canadian Trademark Registration No. 245,940 ELITE owned by T.S. Simms & Co. Limited maintained by decision of the Registrar dated March 23, 2006.

Abbott Laboratories v. Alcohol Countermeasure Systems Corp. (November 4, 2002) — Representing Alcohol Countermeasure Systems, obtained withdrawal of opposition by Abbott Laboratories to registration of ENSURE.

Societé des Produits Nestlé S.A. v. Wells' Dairy, Inc. (October 5, 2000) — Representing Nestlé, successfully opposed application for registration of POLAR TREATS by Wells’ Dairy.

Novartis Animal Health Canada Inc. v. Merck & Co., Inc. (May 10, 1999) — Representing Novartis Animal Health Canada, successfully opposed an application by Merck & Co. to register the trademark ELIMINEX.

Societé des Produits Nestlé S.A. v. Marek Pacanowski (December 1, 1997) — Representing Nestlé, successfully opposed application for registration of FRAPPE by Marek Pacanowski.

White Consolidated Industries, Inc. v Beam of Canada Inc. (1991), 39 C.P.R. (3d) 94  (Federal Court, Trial Division) — As co-counsel with John Morrissey, representing Beam of Canada, successfully defended a trademark action by White Consolidated.

Gorse et al. v Upwardor Corp. (1989), 25 C.P.R. (3d) 166 (Federal Court, Trial Division) — As co-counsel with John Morrissey, represented Paul Gorse in a patent infringement action.


  • Fellow, Intellectual Property Institute of Canada
  • Member, International Trademark Association
  • Member, Association of European Trademark Owners (MARQUES); member of the MARQUES Programming Team
  • Past member and trustee, Licensing Executives Society

Speaking engagements

  • "Brand Owners and Counsel: Strategies for Navigating Canada's Trademark Changes" (with Mark Evans, Philip Lapin and Andrea Kroetch), Webinar Series, October 25, 2018
  • "Internal Affairs — An update on trademark marketing and licensing issues," panel discussion at the MARQUES Annual Conference, Berlin, Germany, September 2010
  • "Brands In and Out of the Box: Who Handles Your Trademark Work?" panel discussion at the MARQUES Annual Conference, Noordwijk, The Netherlands, September 2008
  • "Analyzing, Interpreting and Reporting on Trademark Searches," Thomson CompuMark Trademarks and the Internet Forum, Toronto, November 2007


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