Proof of use and why it matters for trade mark oppositions

The five-year rule

Under UK trade mark law, a registered trade mark that has been on the register for five or more years can be challenged on the basis that it has not been put to genuine use. This rule exists to prevent the register from being cluttered with marks that are registered but never actually used in trade.

For opposition proceedings, this has a direct practical consequence. If you oppose a new application based on an earlier right, and that earlier right has been registered for five years or more, the applicant can require you to prove that your mark has been genuinely used. If you cannot prove use, your opposition fails regardless of how similar the marks are or how closely the goods overlap.

This is section 6A of the Trade Marks Act 1994, and it is one of the most important procedural considerations in any opposition strategy.

What counts as genuine use

Genuine use means real, commercial use of the mark in connection with the goods or services for which it is registered. The use must be more than token or symbolic. It must be use that serves the essential function of a trade mark: identifying the origin of goods or services to consumers.

The UKIPO and the courts have developed a substantial body of case law on what satisfies the genuine use threshold. Key principles include:

The use must be in the UK. Use in other jurisdictions does not count for a UK trade mark opposition unless the mark is also registered in the UK and used in the UK market.

The use must be during the relevant period. The five-year window is calculated back from the date of publication of the opposed application, or from the date of filing of the opposition if the earlier mark had been registered for five years at that point.

The use must relate to the goods or services relied upon. If your registration covers a broad specification but you only use the mark for a narrow subset of those goods, your proof of use may only be accepted for the goods you can actually demonstrate use in connection with.

The volume of use must be proportionate. There is no fixed minimum quantity, but the use must be sufficient to maintain or create a market share for the goods or services. A handful of sales over five years is unlikely to satisfy the threshold, but equally, a niche product does not need to demonstrate mass-market volumes.

What evidence is typically needed

Proving genuine use requires contemporaneous evidence. The types of evidence that the UKIPO typically finds persuasive include:

Sales invoices showing the mark used in connection with the relevant goods, dated within the relevant period. Promotional materials such as brochures, advertisements, and website screenshots showing the mark in use. Packaging, labels, and product photographs. Financial records demonstrating turnover for goods sold under the mark. Statements from customers or trade contacts confirming awareness and purchase of goods under the mark.

The evidence should be consistent and should cover the relevant period. A single invoice from five years ago is rarely sufficient. The UKIPO looks for a pattern of use that demonstrates ongoing commercial activity.

Why proof-of-use readiness matters before filing

The proof-of-use question should be answered before an opposition is filed, not after. Filing an opposition based on an earlier right that cannot survive a proof-of-use challenge is a waste of time and money. It is also a strategic error that gives the applicant confidence and may weaken any subsequent negotiating position.

Despite this, many oppositions are filed without adequate assessment of whether the earlier right can survive a use challenge. The adviser identifies the conflict, confirms the marks are similar, and files the opposition. The proof-of-use question only surfaces when the applicant raises it, by which point it may be too late to gather the necessary evidence.

How Markscope assesses proof-of-use readiness

Markscope includes proof-of-use assessment as a standard component of every intelligence pack where the earlier right has been registered for five years or more. The assessment considers whether the earlier mark is likely to face a proof-of-use challenge based on the registration date, and flags the proof-of-use question as a factor in the overall route assessment.

The pack identifies whether proof of use is required for the earlier right, assesses the readiness of the rights holder to meet that requirement, and highlights any gaps. If the earlier right is less than five years old, the pack notes that proof of use is not yet a factor. If the mark is approaching the five-year threshold, that is flagged as a timing consideration.

This assessment is not a substitute for actually gathering the evidence. The rights holder and their adviser still need to compile the invoices, promotional materials, and other documentation. But the intelligence pack ensures that the question is considered at the earliest possible stage, before deadlines compress and options narrow.

The strategic picture

Understanding proof-of-use readiness changes the strategic calculus of an opposition. If the earlier right is strong on use, the opposition can proceed with confidence. If use evidence is thin, the adviser may choose to pursue alternative routes such as bad faith or to focus negotiation on a coexistence arrangement rather than a formal opposition.

Either way, having the answer early is better than discovering it late. The worst outcome is an opposition that collapses at the proof-of-use stage after significant time and cost has been invested. Systematic assessment at the intelligence stage prevents that.