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

Attorney Oran Friar and trainee attorney Harry Cunliffe at Reddie & Grose, share that patent filings for clinical LLMs are surging, but success in the UK and Europe hinges on demonstrating technical innovation
Implementers can use the UK courts to seek FRAND terms for patent pool licences
The first credible UPC spinouts are growing, and they are coming from elite patent litigation teams, suggesting specialist litigators may no longer need large platforms to compete
Voyage IP has hired a veteran IP leader from Spruson & Ferguson as its head of trademarks, as well as another consultant who will boost the firm’s commercial offering
Lawyers say unwritten appearance expectations can disproportionately affect women and junior talent, making proactive guidance a growing responsibility for law firm leaders
Apple’s lawsuit against OpenAI, which features Tier 1-ranked disputes firms on both sides, reflects how trade secrets litigation is becoming a prominent competition feature
Drew & Napier’s leadership appointments show one way full-service firms can back up claims about the strategic importance of IP
Strike-out application will hear claims that the copyright aspect of an IP infringement claim brought by a gambling and sports betting group should be dropped
Amongst a sea of mergers, Lathrop GPM and HG Law have set out plans to combine, positioning themselves to compete with both IP boutiques and full-service firms
Patrícia Paias explains why she loves the science and business behind an idea and why potential rights owners must avoid the ‘file and forget’ philosophy
Gift this article