Opt-out and withdrawal of opt-out: stages and deadlines
Opt-out removes a classical European patent from the Unified Patent Court's jurisdiction for the whole of its term, leaving national courts as the only forum. It is filed once, free of charge, before any action starts at that Court. Withdrawal reverses the choice, also once, unless a national case on the same patent is already under way. Both acts are administrative filings, not judgments.
Why the two filings behave like one-way turns
A classical European patent — one granted under the ordinary route and not converted into a unitary patent — sits, by default, under the shared jurisdiction of the Unified Patent Court and the national courts of the states where it is validated. Opt-out switches that default off. Once registered, the patent, and any supplementary protection certificate built on it, stays outside the Court's reach for its entire life, unless the owner withdraws the opt-out later.
Withdrawal is not automatic and not guaranteed to succeed. It works once per patent. If a national court has already opened proceedings on the same patent while the opt-out was in effect, withdrawal is blocked for that patent until the national case ends. The same lock applies in reverse: once an action starts at the Unified Patent Court, opt-out is no longer available for that patent.
What changes in practice
The choice decides where an infringement claim or a revocation action can land. With an active opt-out, only national courts can hear the dispute, state by state, with separate proceedings and separate costs in each one. Without it, or after withdrawal, a single action at the Unified Patent Court can cover every participating state the patent is validated in.
For a patent held by several owners, every proprietor across every designated state has to join the same filing. A missing proprietor makes the entry defective, and a defective entry does not protect the patent from the Court's jurisdiction. For a worked example of what shared ownership records look like when several parties hold rights over the same technical file, see Biotech and life sciences an agency keeps the design.
Stages, in order
- List every proprietor and every designated state. The patent owner or its representative pulls the current ownership record before filing anything.
- Check that no action is pending. The representative confirms that neither a national case nor a Unified Patent Court case is already running on that patent.
- Prepare the application. The representative drafts the opt-out request, naming every proprietor exactly as recorded, for every state where the patent is validated.
- File through the Court's Case Management System. A registered representative submits the request electronically; the patent owner does not file directly.
- Wait for entry in the register. The Court Registry checks the filing and enters it; the opt-out takes effect from the date of that entry, not the date of submission.
- Keep the entry current. Any later transfer of the patent has to be reflected in the register, or the opt-out record no longer matches the true ownership.
Withdrawal follows the same route in reverse: the representative files a withdrawal request through the same system, naming the same proprietors, and the Registry enters it once the check on pending national proceedings comes back clear.
Who decides, and how the file moves
| Stage | Who acts | What decides the outcome |
|---|---|---|
| Eligibility check | Patent owner and representative | Whether the patent is classical and no case is already open |
| Filing of opt-out or withdrawal | Registered representative | Accuracy of the proprietor list and the state list |
| Entry in the register | Court Registry | Formal correctness of the filing; the Registry does not rule on substance |
| Dispute over validity of an entry | Competent panel of the Court | Raised as a preliminary question inside a live action, not on its own |
The Registry's role stops at form. If a party later argues that an opt-out was defective — a missing proprietor, a wrong state — that argument is decided by the panel handling the underlying case, not by a separate procedure.
Forks that decide the timing
If the patent has a single proprietor and no parallel national dispute, filing is straightforward: one representative, one submission, one entry. If ownership changed recently and the register has not caught up, the filing should wait until the transfer is recorded, because a mismatch between the register and the application is the most common cause of a defective opt-out. If a competitor has already filed a case at the Unified Patent Court on that patent, opt-out is closed for it permanently, and the only remaining forum is the one where the case was filed.
What this page does not cover
This page describes the mechanics of the two filings, not the substance of any dispute that follows. It does not address how a validity or infringement action proceeds once jurisdiction is settled, and it does not cover translation arrangements for the underlying patent, which sit with a different part of the process. Where a dispute reaches into a counterparty's corporate structure abroad, that mapping is a separate exercise; see Counterparty in United Arab Emirates in detail for what such a check can and cannot establish.
Related reading
For a comparable step-by-step account of a different enforcement tool, see Seizure and inspection measures step by step.
Verified
Verified: 4 February 2025. This page sets out the mechanics of filing and withdrawal as the Court's own Registry applies them; it does not cite specific legal provisions, because the applicable national and procedural detail depends on where each patent is validated and is handled on a case-by-case basis. Background on the people who maintain this material is at The people behind the reports and its limits.
For the wider set of procedures around patent protection and disputes, start from Seizure and inspection measures step by step or return to the practice overview.
If your portfolio reaches beyond patents
Opt-out questions rarely arrive alone. If a related dispute touches a tokenised right instead of a registered patent, see When the creator disputes the mint in detail. If the same portfolio includes a trade mark under attack, see When a mark is challenged as descriptive in practice. If a design right is at stake as well, see When a design is copied by a competitor: what.
FAQ
How long does opt-out and withdrawal of opt-out take in practice?
Filing itself takes a single submission through the Case Management System. The opt-out or withdrawal becomes effective only once the Registry has entered it, and the timing of that entry is set by the Registry's own workload, not by a fixed count published in advance.
Which documents are needed to start?
A current list of every proprietor for the patent and every state it is validated in, proof that no national or Unified Patent Court case is already running on it, and a mandate for the representative filing on the owner's behalf.
What happens if the other side does not respond?
Opt-out and withdrawal are unilateral filings by the proprietor; they do not require the other side's response to take effect. A dispute only arises later, if an opponent challenges the validity of the entry inside a separate action.