When a sublicence appears without consent: what it costs to be wrong
A sublicence granted without the required consent does not automatically fall away, but it exposes licensee and sublicensee to real remedies: termination of the head licence, an infringement claim against the downstream user, and a claim for royalties already collected. Guessing wrong here is costly, not merely technical.
The legal basis for the sublicence
The right to grant a sublicence is not automatic. It comes from the head licence, and most head licences make sublicensing conditional on the licensor's prior written consent, whether that condition is stated as a separate clause or built into the grant itself. Where the underlying right is an EU trade mark, the licensing framework sits in Regulation (EU) 2017/1001 (EUTMR); for software, in Directive 2009/24/EC; for a database protected by the sui generis right, in Directive 96/9/EC; for a unitary patent, in Regulation (EU) No 1257/2012. None of these instruments states a general consent rule for sublicensing on its own terms — that rule lives in the contract, and its exact wording decides whether a missing signature is fatal or curable.
This distinction matters for the read that follows. A missing consent under a trade mark licence and a missing consent under a software licence do not carry the same consequences, because the underlying right — and what happens to it once the head licence collapses — differs by regime. An exclusive licence that already carries an express right to sublicense behaves differently from a non-exclusive licence silent on the point.
Whether a sublicence is void from the outset, merely voidable at the licensor's option, or simply a breach that triggers other remedies is a question the head licence answers, not a default the law supplies in the same way across every EU jurisdiction. That is why the first document to open is the head licence, not a general rule.
What changes once the sublicence is out there
Three exposures open at once. First, the licensor may treat the head licence as breached and move to terminate it, and termination of the head licence can pull the sublicence down with it, regardless of what the sublicensee believed at signing. Second, the sublicensee's use — made in good faith — may turn into an infringement the moment the head licence ends, because the sublicensee's right was always derivative of a licence that was never properly extended to it. Third, any royalties already paid to the licensee for the unauthorised sublicence can become a sum the licensor is entitled to claim back, on the basis that the licensee was never entitled to receive them in the first place.
None of these outcomes is automatic, and none arrives on a fixed timetable. Contracts differ on cure periods, on whether consent can still be given after the fact, and on whether termination is immediate or requires prior notice. What is consistent is that the unauthorised sublicence changes the risk profile of every party in the chain long before anyone decides to act on it — including the sublicensee's own customers, who inherit a title problem they did not create.
What to do now
- Locate the master licence and read the consent, assignment and sublicensing clauses in full, not the summary anyone remembers from negotiation.
- Freeze further dealings with the sublicensee — no new invoices, no new deliverables, no renewal discussions — until the position is clear.
- Check whether the head licence sets a notice or cure period for this kind of breach; if it does, that clock may already be running.
- Preserve every communication that could show the licensor's knowledge of, or informal acceptance of, the sublicence — this evidence decides more than the contract text alone.
- Ask counsel whether retroactive consent or ratification is realistic on these facts, rather than assuming the position is already lost.
- Do not rely on the licensor's silence as consent; silence is evidence to be weighed, not an agreement in itself.
Who decides, and by when
| Question | Where the answer sits | What it turns on |
|---|---|---|
| Is the sublicence void, or merely breach-triggering? | The wording of the head licence | Whether consent is drafted as a condition of the grant or as a separate covenant |
| How long does the licensor have to act? | The notice and cure clauses, then the applicable national limitation rules | When the licensor is treated as having discovered the breach |
| Who rules on a dispute? | The forum named in the head licence, or the competent court failing a clause | The evidence of what the licensor knew, and when it knew it |
Where the licence is silent on a forum, the decision falls to the court with jurisdiction over the licensee or the sublicensee, under the applicable national procedural rules. This page does not set that forum for you; the head licence usually does, and where it does not, the answer depends on facts this page has no visibility of.
Three ways this plays out
The outcome depends less on the fact of the missing consent and more on which right is licensed, where the parties sit, and how the gap was discovered. Three patterns recur.
If the licensed right is a trade mark and the sublicensee is selling through a marketplace, the first pressure point is often the listing itself rather than the courtroom — see A marketplace listing is taken down trade mark what for how that risk plays out on its own terms.
If the sublicensee and the licensee sit in different countries and the underlying ownership chain is not itself settled, the sublicence question compounds an existing gap rather than creating a new one — the pattern is close to When the team is spread across three countries: what.
If the licensed asset is tokenised and a fork has since duplicated it, working out who actually held the right to sublicense at the relevant moment becomes a timing question as much as a consent question, discussed in When a fork duplicates the token in practice.
What this page does not resolve
This page does not value the exposure in money terms, does not replace a clause-by-clause read of your specific head licence, and does not set a litigation strategy for you. It does not state a deadline in days or months, because the head licence and the applicable national limitation rules — not this page — fix that number for your particular facts. Where the underlying right sits outside the four regimes named above, the framework changes again, and that read has to be done separately.
Related situations
A sublicence granted without consent is one way a licence chain can break. Another is a deal that assumed ownership no one actually held — see When the deal transfers rights that were never owned for the related failure mode further up the same chain.
Verified
State as of March 2025. This page draws on Regulation (EU) 2017/1001 (EUTMR, in force from 1 October 2017), Directive 2009/24/EC (in force from 25 May 2009), Directive 96/9/EC (in force from 27 March 1996), and Regulation (EU) No 1257/2012 (in force from 1 June 2023). Documents shared during a review of this kind are handled under our Privacy notice: two roles, two bases and its limits.
FAQ
What is the first step when a sublicence appears without consent?
Read the head licence's consent and termination clauses before contacting anyone else. What the contract says about cure and notice decides whether there is still time to fix the position quietly, or whether the licensor already has grounds to act.
Which deadline is already running?
Two clocks can run at once: any cure period the head licence itself sets, and the general limitation period under the applicable national law once the licensor is treated as aware of the breach. The head licence usually names the first; the second depends on the jurisdiction and the facts of discovery.
Who decides, and on what evidence?
The forum named in the head licence decides, or the competent court where none is named. The evidence that matters most is what the licensor knew, and when it knew it — correspondence, invoices, and any conduct that could be read as acceptance of the sublicence.