Proof of use: costs drivers
Proof of use costs rise with the number of registers, classes and markets involved, and with how much evidence already exists before the challenge lands. A single class in one register, backed by clean commercial records, is cheap to defend. Several classes, more than one jurisdiction, or thin paperwork turn the same exercise into weeks of preparatory work.
What proof of use changes in practice
A proof of use request shifts the burden onto the holder. The office responsible for the register no longer assumes the mark is in genuine commercial use; it asks for evidence, tied to the classes actually challenged. Silence, or evidence that does not match the registered goods and services, puts those classes at risk of falling away.
The trigger is usually an opposition, an invalidity action or a straightforward non-use cancellation filed by a third party. The clock the holder must meet is set by the office handling the case, and it rarely moves once fixed.
Cost drivers
| Driver | Effect on cost |
|---|---|
| Number of classes covered | Each class needs its own evidence trail; more classes mean more invoices, catalogues and packaging to collect. |
| Number of registers | A mark held in several registers needs use shown separately for each, even where the underlying business is identical. |
| Age of the evidence | Older use is harder to document; archived invoices and outdated websites take longer to retrieve and verify. |
| Whether an opponent is active | A file with no opposing input is cheaper to prepare than one where every exhibit is challenged. |
| Cross-border sales | Use spread across several markets needs evidence translated and matched to each market on its own. |
None of these drivers work in isolation. A holder with three classes in one register and steady sales in one market spends far less than a holder with the same three classes spread across three registers and patchy sales records.
What to do
- Collect dated sales records for each challenged class; the finance team is usually the fastest source.
- Gather packaging, catalogues and advertising that show the mark as registered, not a later variant.
- Map each item of evidence to a class and a market; gaps in that map decide which classes are exposed.
- Instruct counsel to draft the statement of use well before the response deadline, not on the day it falls due.
- Keep a running log of what was filed and when; the same file often serves the next challenge on the same mark.
Who decides
The office responsible for the register assesses the papers filed on both sides. It does not investigate independently; it decides on what the holder submits and what, if anything, the challenger disputes. Where the opposing side sits outside the jurisdiction, formal Cross-border service of documents can add weeks before either side is required to act.
An unfavourable decision on a class does not end the mark itself. It removes protection for that class only, leaving the rest of the registration intact.
Forks
If sales run mainly through a licensed platform rather than direct trading, the underlying Service level technology contract how it is proved explained can supply the continuity record that invoices alone do not show.
If the brand also appears through digital certificates or on-chain records, the way What changed in publication practice token issuance is documented can double as supporting evidence of continued commercial presence.
If the challenger files nothing beyond the initial request and never responds to the evidence filed, the case usually moves to a decision on the papers already on record, without a further exchange.
Limits of this page
This page describes the procedural mechanics of a proof of use request. It does not size what a lost class is worth commercially, or how a gap in evidence should be valued once the mark sits inside a wider portfolio; that estimate is addressed separately in Asset in Ireland explained, built for the assets actually on file.
It also does not cover appeals once a first decision is issued, or how a partial loss on one class interacts with parallel filings in other registers.
Related reading
A related procedure follows a similar cost pattern from the opposite direction: How surrender and partial surrender trade mark costs drivers explains what drives cost when a holder gives up rights rather than defends them.
Verified
This page describes procedural mechanics as applied by the office handling the register, not a specific legal provision. No external source is cited, in line with how procedural guidance in this file is built: the office's own practice, not a numbered rule, decides the steps described here.
FAQ
How long does proof of use take in practice?
Timing depends on how quickly evidence is ready and how actively the other side engages. A file with clean records and no active opponent moves faster than one where every exhibit is disputed and extensions are requested at each stage.
Which documents are needed to start?
Dated sales records, packaging or catalogues showing the mark as registered, and advertising material tied to the challenged classes and markets. Records that predate the challenge by a wide margin carry more weight than material produced after the request lands.
What happens if the other side does not respond?
The office typically decides on the evidence the holder has filed, without a further exchange. Silence from the challenger does not automatically favour the holder; the evidence filed still has to meet the standard the office applies to the classes under challenge.