Fay O'Brien
Registered Trade-Mark Agent

Fay O'Brien

Fay is the founder of O’Brien TM Services Inc. and is a registered trade-mark agent, practicing in all aspects of Canadian trade-mark law. She is also authorized to practice before the United States Patent & Trademark Office (USPTO) on behalf of Canadian clients.

Fay has over twenty years of experience in the field of intellectual property. In addition to prosecuting trade-mark applications before the Canadian Intellectual Property Office, she has several years of experience in opposition and summary expungement proceedings, including making oral representations before the Hearing Board. In addition to providing the full array of the administrative process of securing trade-mark registrations, Fay’s practice also includes pre-clearance analyses, investigative research, document analyses, and assisting legal counsel on litigation matters.

Her years of experience and knowledge in trade-mark law provides her national and international clients with strategic portfolio planning and management that optimizes the protection of their intellectual property rights.

In addition, her committee involvements, on the national and international levels, put her on the forefront of any upcoming changes being implemented as a result of internal Trade-marks Office policies or Court decisions.

Professional Involvement

Fay is a Fellow Member of the Intellectual Property Institute of Canada (IPIC), where she sits as an active participant on the Trade-mark Practice Committee as well as the Tutorials Committee. In keeping with her international presence, Fay is a member of the Pharmaceutical Trade Mark Group (PTMG).


Chantal St. Denis, B.Soc.Sc.
Registered Trade-Mark Agent

Chantal St. Denis

Chantal St. Denis brings to O'Brien TM Services over eighteen years of experience in trade-mark filings and prosecution in Canada and abroad.

Her practice extends to all aspects of trade-mark prosecution which includes the pre-assessment and filing of trade-mark applications, carrying them through to registration, as well as opposition and summary expungement proceedings. Chantal represents many of her Canadian clients' interests by managing their international portfolios through a network of foreign associates.

Chantal, having been a partner for many years in a boutique IP firm, understands the intrinsic nature business strategies. Her advanced level of expertise in trade-mark law provides both her domestic and international clients with a competitive edge in the strategic planning required to maximize the effectiveness and worldwide protection of their marks.

Chantal also offers her services in both English and French, Canada’s two official languages.

Professional Involvement

Chantal is an Associate Member of the Intellectual Property Institute of Canada (IPIC). She is also a member of the International Trademark Association (INTA) where she sits as an active participant on the Non-Traditional Marks Committee (Canada Subcommittee); and past member of INTA Trademark Offices Practices Committee (TOPC) and INTA Asia Pacific/Canada TMO Relation Subcommittee. She is a past Director in charge of the Trade-mark prosecution course offered annually by IPIC and McGill University to the business, legal and public sectors and remains actively involved in these educational courses.

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