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May Cheng - Intellectual Property Lawyer

May Cheng

Partner, Intellectual Property

Contact Information

tel: 416.862.5664



Bar Admission

Ontario, 1993

British Columbia, 1997


Carleton University, B.A.

University of Ottawa, LL.B.

Registered Trademark Agent

French, English

May is a Certified Specialist in Intellectual Property Law (Trade- mark/Copyright), and a partner in the Intellectual Property Group. She has 25 years of experience in advising clients on all aspects of intellectual property protection and enforcement, including branding strategy, acquisition, licensing and anti-counterfeiting. She is regularly involved in litigating trade-mark disputes and a wide variety of IP infringement cases, including Anton Piller injunctive proceedings to curb counterfeiting.

May has acted as an expert consultant to The Government of the Bahamas in redrafting their intellectual property legislation to make it compliant with international treaty obligations for ascension to the WTO. She has received accolades for her legal and community work, including being recognized globally as one of the Top 250 Women in IP in 2018, by Managing IP Magazine, based on client and peer review research. May’s extensive community work includes causes that support the advancement of women’s rights and garnered her the Women’s Law Association of Ontario President’s Award in 2016.

    • May Cheng recognized as one of the Top 250 Women in IP by IP STARS 2019
    • Assisting The Bahamas in drafting Intellectual Property Regulations to achieve WTO compliance – September 2017 to April 2018
    • Successfully renewed Anton Piller Orders to curb the sale of counterfeit goods on behalf of famous brand: Hugo Boss Trade Mark Management GmbH & Co KG, Hugo Boss AG and Hugo Boss Canada Inc. v. Jane Doe and John Doe, FC T-688-18 (May 2018) , FC T-494-17 (May 2017), FC T-543-16 (April 2016) and FC T-527-15 (April 2015)
    • Obtained consent judgment for $30,000 for trademark and patent infringement: Dentsply Sirona Inc. et al. v. Canada-Wide Dental Suppliers Inc., FC T-1750-17 (February 19, 2018)
    • Obtained consent judgment for $40,000 against counterfeit goods supplier: Dentsply Sirona Inc. et al. v. Konstantinovskiy, FC T-64-17 (March 2, 2017)
    • Successfully represented Chartered Professional Accountants of Canada, among other co-defendants, on a motion striking out two expert affidavits sought to be relied upon at trial: ACCA UK et al. v. CPA Canada et al., 2016 FC 1076
    • Advised large foreign corporation on name choice for multi-million dollar amalgamation of multiple industrial divisions, March 2016
    • Intellectual Property counsel to Aviva Canada Inc. on acquisition of RBC General Insurance Company and entry into a 15 year strategic agreement with RBC signed January 2016
    • Intellectual Property counsel to Intact Financial Corporation on the acquisition of Canadian Direct Insurance from Canadian Western Bank, completed in May 2015
    • Successfully defeated appeal in the Federal Court from Trade-marks Opposition Board decision allowing Compass Minerals to obtain registration of trade-mark ENVIRO-GUARD: Tiger Calcium Services Inc. v. Compass Minerals Canada Corp., 2015 FC 1257
    • Represented Jamieson Laboratories Ltd. in an appeal to the Federal Court of Appeal against an interlocutory injunction issued in favour of Reckitt Benckiser LLC, where the Court varied the terms of the injunction: Jamieson Laboratories Ltd. v. Reckitt Benckiser LLC et al., 2015 FCA 104
    • Represented Jamieson Laboratories Ltd. in interlocutory injunction proceedings in the Federal Court that resulted in a departure from traditional test for issuance of an interlocutory injunction: Reckitt Benckiser v. Jamieson Laboratories Ltd., 2015 FC 215
    • Successfully obtained and executed Anton Piller Orders for Ontario to curb counterfeit ginseng sales: Korea Ginseng Corp. et al. v. Yue Tak Tong Ginseng and others, FC T-1575-14, Korea Ginseng Corp et al. v. 1554939 Ontario Inc. o/a Wing Shing Herbs Co., FC T-1578-14, June- September 2014


  • Chambers Canada: Canada's Leading Lawyers for Business, 2019: Intellectual Property


  • The Canadian Legal Lexpert Directory, 2018-2019: Intellectual Property
  • The Canadian Legal Lexpert Directory, 2019: Litigation - Intellectual Property
  • Lexpert Zenith Award: Celebrating Mid-Career Excellence, 2018

Legal 500

  • The Legal 500, 2019: Recommended Lawyer, Intellectual Property

Expert Guides

  • Expert Guides: The Legal Media Group Guides to the World’s Leading Lawyers, 2017-2018: Women in Business Law.
  • Expert Guides: The Legal Media Group Guides to the World’s Leading Lawyers, 2018: Trade Marks.

Managing Intellectual Property

  • Managing Intellectual Property, 2017-2019 (Global Ranking): The Top 250 Women in IP
  • Managing Intellectual Property, 2014-2019: Trade Mark Star - Canada

World Trademark Review

  • WTR 1000: The World’s Leading Trademark Professionals, 2019: Gold Band ranked lawyer in Canada for trademark litigation. 
  • WTR 1000: The World’s Leading Trademark Professionals, 2013-2019: Silver Band ranked lawyer in Canada for anti-counterfeiting. 

Women's Law Association of Ontario

  • Women's Law Association of Ontario: President's Award, 2016.

University of Ottawa Faculty of Law

  • Inducted into the University of Ottawa Faculty of Law's Common Law Honour Society, 2014.

  • Selection Committee member, Common Law Honours Society of the University of Ottawa 2018-present
  • Fundraising Committee member, the equality effect (
  • Diversity Champions Committee, 2016-2017

  • Co-Chair, IP Year in Review, The Law Society of Ontario, 2019
  • Chair, IP Year in Review, The Law Society of Ontario, 2016-2018
  • INTA Anti-Counterfeiting Committee member, 2018-2019 terms
  • Certified Specialist Board Member, The Law Society of Ontario, 2016-2019
  • Co-Chair, Ontario Bar Association Institute Committee, 2014-2017
  • Committee Member, International Trade-mark Association, Famous and Well-Known Marks Committee, North American Subcommittee, 2012-2014 and 2014-2016 terms
  • Committee Member, Ontario Bar Association Institute Committee, 2011-2014
  • Women’s Equality Advisory Group Committee to the Law Society of Ontario, 2009-2012
  • Expert Advisory group member to the Law Society of Ontario's Committee on the Retention of Women in Private Practice, 2006- 2008
  • Fellow, Intellectual Property Institute of Canada (IPIC)

Previous Speaking Engagements

  • Managing an Efficient IP Practice in 2019 - Risk Management
    Speaker, December 7, 2018
  • Digital Counterfeiting and Piracy, Schulich School of Business, York University
    Speaker, Copyright Law in the Digital Era, October 19, 2018
  • 23rd Annual Fraud and Anti-Counterfeiting Conference
    Speaker, Anti-Counterfeiting Resources, Industry, Agencies and Organizations, October 5, 2018
  • INTA Round Tables
    Speaker, Canadian Update on Trademark Law for U.S. Practitioners, September 20, 2018
  • Osgoode IP Intensive, York University
    Speaker, Counterfeiting, Toronto, August 31, 2018
  • Schulich Executive Education Centre, Asian Business and Management Program, York University
    Speaker, Intellectual Property Protection for Businesses, Toronto, July 18, 2018
  • Canadian Defence Lawyers Annual General Meeting
    Panelist, Diversity in the Legal Profession, Toronto, June 6, 2018
  • Osgoode Professional Development, York University
    Speaker, Trademarks & Counterfeiting, Toronto, March 19, 2018
  • Women, Race and the Law: Challenges and Opportunities
    Speaker, Toronto, March 1, 2018
  • 8th Annual Inhouse Counsel Summit, LSO
    Co-Presenter, Confidential Obligations and Departing Employees, Toronto, February 14, 2018
  • 22nd Annual IP Year in Review
    Program Chair, January 18, 2018
  • The Osgoode Certificate in Intellectual Property Licensing
    Panelist, Program Faculty Member, Toronto, September 25 - December 5, 2017
  • Bridging Barriers and Biases: Feminism for Men
    Speaker, Toronto, November 21, 2017
  • Intellectual Property Institute of Canada (IPIC) Annual Meeting
    Speaker, Use It or Lose It: Non-use Cancellation Proceedings, Niagara Falls, October 11-13, 2017
  • Counterfeiting and Piracy: Canadian Judicial Experience, Measurement of Impacts and Consumer Attitudes
    Speaker, York, September 20, 2017
  • Your First Intellectual Property Matter: A Practical Guide
    Speaker, Unravelling Infringement, Passing-off and Depreciation of Goodwill, Toronto, May 30, 2017
  • 7th Annual In-House Counsel Summit
    Speaker, Marketing and Advertising: Best Practices & Potential Pitfalls, Toronto, February 27, 2017
  • 21st Annual Intellectual Property Law: The Year in Review
    Moderator, Program Chair, Toronto, January 19, 2017
  • 21st Annual Fraud & Anti-counterfeiting Conference
    Speaker, Toronto, December 2, 2016
  • Intellectual Property Institute of Canada webinar
    Speaker, Primer on Remedies in IP Infringement Cases, November 30, 2016
  • Through the Door and at the Table: Women and Racial Diversity
    Panelist, September 21, 2016
  • 20th Annual Fraud and Anti-Counterfeiting Conference
    Speaker, Counterfeit Products Identification, December 2-4, 2015
  • Women in the Legal Profession: How to be Successful
    Speaker, October 29, 2015
  • 88th Annual Meeting of the Intellectual Property Institute of Canada (IPIC)
    Speaker, It's Official: Prohibited Marks Still Rule, October 16, 2014


  • Author, Takeaway in burger wars: Bullies lose more often than you might think, The Lawyer's Daily, January 28, 2019.
  • Co-author, No breaks in Europe for KitKat bars: Stripped of design protection, The Lawyer's Daily, August 31, 2018.
  • Author, Grey market sales can be restricted, even if not from Mars, The Lawyer's Daily, July 10, 2018.
  • Author, How to truly support women in private practice, Precedent, September 7, 2017.
  • Contributing author, Lexis Practice Advisor, Canada's Anti-counterfeiting Topic © 2017.
  • Contributing author, Intellectual Property Enforcement in the Digital World - © 2017 LexisNexis.
  • The Law of Work - © 2016 David J. Doorey, Emond Montgomery Publications Limited, Co-author of Chapter 32, Intellectual Property and Work.
  • Editor-in-Chief, Intellectual Property Journal, published by Federated Press, January 2013-2016.
  • Co-author, Chapter 32, Intellectual Property Law and Work, for textbook The Law of Work, published by Emond Montgomery, December 2015.
  • Author, Canada: Adidas’s Famous Three Stripes Can’t Stop Two Stripe Designs, INTA Bulletin, Vol. 70, No. 19, November 1, 2015.
  • Co-author, Counterfeit diabetes products and the ethical question of access, Diabetes Management, Vol. 5, No. 5, September 1, 2015.