Opt-out and withdrawal of opt-out: what the decision maker looks at
An opt-out removes a European patent bundle from the jurisdiction of the Unified Patent Court, and a withdrawal reverses that removal for the same bundle. Before either entry is recorded, the registry checks three things: that no action already sits on the same patent, that the filer can act for every listed proprietor, and that the record stays consistent across all designated states.
Neither step is a formality that a paralegal ticks off without thought. An opt-out decides which courts will ever hear a dispute over that patent, and a withdrawal, once made, closes that door for good. The checks below exist because a defective filing does not simply get rejected — it can sit on the register looking valid until someone relies on it and finds out otherwise.
What changes once the filing is recorded
Once an opt-out is recorded, the bundle sits with national courts instead of the common court, and it stays there until a withdrawal is filed or the transitional arrangement it relies on lapses. A withdrawal moves the same bundle back under the common court's reach. The recording date, not the submission date, is what later filings and any opposing party will look at.
The step that decision makers treat as final is the one-way rule: once a bundle has been withdrawn from opt-out, a second opt-out for that same bundle is no longer available. Filing teams that plan to keep the option open should treat every opt-out as a decision made once for the life of the patent, not as a routine administrative box to tick.
This matters most for forum strategy. A proprietor who opts out keeps the option of litigating in familiar national courts, but loses the reach of a single common-court judgment across every designated state. Withdrawing later regains that reach, but only if no third party has already started proceedings on the same patent in the meantime — and that check runs both ways, since a pending national case can also block the withdrawal.
What to do before filing
- Confirm that ownership records match the applicant named in the filing for every designated state, not only the state where the patent was granted.
- Check that no infringement or revocation action already touches the same patent, at the common court or at a national court.
- Identify, in writing, the person authorised to act for every co-proprietor listed on the bundle.
- List every application and grant number covered by the same family in a single filing rather than splitting the bundle across several entries.
- Keep the filing receipt; it is the only proof of the recorded date once the entry goes live.
- Track the registry entry until it shows as recorded, not merely as submitted.
The order matters. A filing that lists the wrong proprietor or misses a co-owner is not corrected quietly — it is returned, and the delay that follows can matter more than the original mistake, especially if a competitor is watching the same patent family for a chance to file first.
| Step | Opt-out | Withdrawal of opt-out |
|---|---|---|
| Who can file | The registered proprietor, or all co-proprietors jointly | The same party or parties who filed the opt-out |
| Effect on jurisdiction | Moves the bundle to national courts | Moves the bundle back to the common court |
| Can it be repeated | Yes, until it is withdrawn | No further opt-out is available afterwards |
| Blocked by a pending action | Yes, on the affected patent | Yes, on the affected patent |
Who decides and where
The Registry of the Unified Patent Court records both entries. Recording is administrative: the Registry checks the filing against the conditions above and either records it or flags what is missing. If a party later disputes whether an opt-out was valid — because the proprietor list was wrong, or an action was already pending — that dispute goes to the Court itself, not back to the Registry.
The Court then treats the validity of the opt-out as a preliminary question before it looks at the substance of the case. In practice this means a defendant can raise a defective opt-out as a jurisdictional objection at the very start of proceedings, and the case does not move forward on the merits until that objection is resolved one way or the other.
Common forks
If the patent sits inside a family developed under a service arrangement, the decision maker also checks who actually holds the rights before accepting the filer's authority. Where the underlying software was built by an outside agency, ownership records settle who signs — the piece on B2B software and SaaS an agency keeps the design covers what that record shows in practice.
If the right is also represented as a token in a separate ledger, the registry entry and the token do not update each other automatically, and a mismatch between the two can stall a filing until it is resolved — see When the token refers to an unregistered right explained.
If several co-proprietors disagree about filing an opt-out, the registry will not record a partial filing on their behalf; the disagreement has to be resolved between the proprietors before the entry can go in.
If a patent has already changed hands since grant, the decision maker checks that the transfer itself was recorded before the opt-out is accepted. An opt-out filed by a proprietor whose ownership is not yet reflected on the register is treated the same way as one filed by the wrong party altogether.
What this page does not cover
This page does not price the filing, and it does not estimate how long a contested opt-out takes to resolve once it reaches the Court — both depend on how many territories and counterparties are involved in a given matter.
If the open question is really about a counterparty rather than a patent record, the Counterparty report before onboarding a distributor in detail sits closer to that question.
For how the team behind this page is structured and where its remit stops, see Working with this team and its limits.
Verified
Checked against the current published guidance of the Unified Patent Court Registry. Where that guidance changes, this page is updated rather than left to stand on a superseded version of the procedure. It does not rely on any single reported case, since the underlying rule is procedural rather than a matter of interpretation.
Related procedure
Seizure and inspection measures step by step covers a different stage of a dispute, once evidence rather than jurisdiction is the question.
FAQ
How long does opt-out and withdrawal of opt-out take in practice?
There is no fixed clock published for either step. A complete filing that already satisfies the checks above is normally recorded without a hearing, since the Registry has nothing left to query. An incomplete filing sits until the missing element is supplied, and that delay is set by how quickly the filer responds, not by the Registry. Disputed cases, where the validity of an opt-out is challenged before the Court, move at the pace of the Court's own calendar rather than the Registry's.
Which documents are needed to start?
At minimum: proof of proprietorship for every designated state covered by the bundle, written authority for whoever signs on behalf of all co-proprietors, and a complete list of every application and grant number in the same family. Missing any one of these is the most common reason a filing is returned rather than recorded, and it is worth assembling all three before the filing is drafted, not after.
What happens if the other side does not respond?
An opt-out or its withdrawal is not an adversarial filing between two sides; there is no response to wait for at the recording stage, since the Registry checks the filing against the proprietor and against pending actions, not against an opponent's position. Silence only becomes relevant once a dispute over validity reaches the Court, and even then the case proceeds on the record that exists rather than on an answer that never arrives.