The importance of providing sufficient evidence in invalidation proceedings

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

The importance of providing sufficient evidence in invalidation proceedings

Sponsored by

aj-park.png
nz-evidence-min.jpg

A recent trademark decision by the Intellectual Property Office of New Zealand (IPONZ) reveals the importance of submitting reliable and probative evidence in invalidation proceedings, even when the invalidation proceedings are undefended by the trademark owner.

The decision confirms that IPONZ regards trademark registrations as important property rights that will not be invalidated unless the applicant makes out a true prima facie case for invalidity.

Case summary

g7

Cong Ty Co Phan Dau Tu Trung Nguyen (the applicant) applied to invalidate trademark registration 1067280 (G7 logo) in the name of Le Hoang Diep Thao (the registered owner) on the grounds that the applicant was the first user and lawful owner of the G7 logo and that the following applied:

  • Use of the G7 logo would be likely to deceive or confuse given the applicant’s common law rights in the G7 logo.

  • The registered owner’s use of the G7 logo is contrary to New Zealand law because it would constitute passing off and would amount to a breach of the Fair Trading Act 1986.

  • The applicant is the true owner of the G7 logo and the registered owner is not entitled to claim to be the owner of the logo.

  • The registered owner applied for registration of the G7 logo in bad faith.

The registered owner did not defend the registration. The assistant commissioner (AC) held that the applicant had not provided sufficient evidence to make out a prima facie case of invalidity of the G7 logo on any of the grounds claimed. Thus, the application for a declaration of invalidity was refused.

Evidence submitted by the applicant

To support its application for invalidity, the applicant provided as evidence:

  • printouts of website pages for www.vietnamesecoffee.co.nz (allegedly the applicant’s New Zealand website);

  • representations of packaging containing some form of the stylised G7 logo;

  • seven customer comments relating to its coffee products;

  • references to a physical delivery address for coffee in Te Awamutu; and

  • references to New Zealand telephone numbers.

Evidence not sufficiently reliable or probative

The AC held that the evidence provided did not make out a prima facie case for invalidity and identified the following main evidentiary issues:

  • According to the applicant, www.vietnamesecoffee.co.nz was the website of its New Zealand distributor. However, the distributor was not named, and the applicant provided no evidence of any agreement between itself and www.vietnamesecoffee.co.nz.

  • The applicant did not submit evidence regarding consumer awareness of www.vietnamesecoffee.co.nz.

  • It is not clear whether the products on www.vietnamesecoffee.co.nz were those of the applicant, the registered owner, or a third party.

  • The applicant did not submit any invoices, receipts, sales numbers, advertising spend, number of visitors to the website or other evidence on which the inference of reputation for the G7 logo mark could be made.

  • Although the applicant provided evidence of online customer comments, the comments did not make direct reference to the G7 logo.

  • The statutory declaration did not include a statement that the declarant had personal knowledge of the matters being declared and so had no probative weight.

The AC found that the applicant had not met the onus of establishing a reasonable prima facie case for any of the grounds of invalidity and dismissed the application.

This case reveals the importance of submitting reliable and probative evidence in invalidation proceedings and may serve as a guideline for the type of evidence that will be considered persuasive by IPONZ.



more from across site and SHARED ros bottom lb

More from across our site

Maria Peyman, head of IP at Birketts, explains why the firm is adopting a ‘seamless approach’ for clients by integrating two of its practice areas
Matthew Swinn, who leads the firm’s IP practice, discusses why Mallesons is well-placed to remain a major IP force
Lawyers at A&O Shearman analyse developments regarding UPC’s long-arm jurisdiction, including its scope and jurisdictional limits
Michelle Lee discusses reaching milestones at the USPTO, AI’s role in legal work, and how to empower women in tech and IP
Executive chair Matt Dixon, who reveals a new associate hire, says the firm wants to offer a realistic pathway to partnership while avoiding the ‘corporate machine’ route
Mayer Brown’s role in cardiovascular technology dispute reflects how firms are pursuing precedent-setting cases to try and guide AI and patent law
Kevin Mack, Via’s new president, emphasises the importance of collaborative licensing structures and shares how AI tools can help create new lines of business
A Tokyo District Court ruling concerning movie spoilers, and a second chance for VLSI against Intel were also among the top talking points
Practitioners believe new AI tools at the USPTO will not replace lawyers or disrupt revenue, but instead expose where a trademark attorney’s value lies
Leighton Cassidy Legal hopes to leverage its founder's international experience and provide clients with a rare chance to receive litigation and prosecution under one umbrella
Gift this article