When a customs authority detains a shipment: what it costs to be wrong
A detention notice from customs starts a short window, not a long one. You must confirm the right that supports your claim, decide within days whether to pursue destruction or release, and be ready to post security if the holder pushes back. Getting the order of steps wrong is what turns a routine hold into a costly dispute.
What the detention means
Customs authorities in the EU act under an application for action once goods are suspected of infringing a protected right. The framework is set out in Regulation (EU) No 608/2013. The authority does not decide infringement; it suspends release and gives the rights holder a window to act, and gives the declarant or importer a window to respond.
A detention is a procedural pause, not a finding against either side. Nothing is resolved until one of you moves, or the window closes without action.
What changes once the shipment is held
Three things change immediately. First, a clock starts, and the length of the window depends on the type of goods and whether the case is treated as straightforward. Second, storage and handling costs continue to run against the goods while they sit with customs. Third, silence has a default outcome: if the rights holder takes no action within the window, the goods are usually released.
This means the party that moves first, with the clearest paperwork, generally controls what happens next.
What to do, in order
- Read the notice in full. Confirm the deadline stated in it, the goods description, and which right is cited as the basis for the hold.
- Identify who filed the application for action. The notice should name the rights holder or their representative; this is who you will need to correspond with.
- Gather proof of origin and title within 48 hours. Invoices, shipping documents, and any licence or authorisation covering the goods should be assembled before you respond.
- Decide your position before the deadline, not after. If you dispute the claim, prepare a written response; if you accept it, consider a controlled destruction agreement to close the matter without further cost.
- Escalate to counsel if security or a court step is proposed. Any request to post a bond or guarantee should be reviewed before you agree to it.
- Keep a written record of every communication with the authority. The timeline of who said what, and when, becomes relevant if the matter is contested later.
Who decides, and how
The customs authority administers the suspension. It does not rule on whether the right is valid or whether infringement occurred; that question, if contested, moves to a civil court or another competent forum named in the notice.
| Stage | Who acts | What is decided |
|---|---|---|
| Detention | Customs authority | Suspends release; issues notice to both sides |
| Response window | Rights holder | Confirms the claim or lets the goods go by default |
| Contested claim | Court or competent forum | Rules on infringement and disposal of the goods |
| Uncontested claim | Declarant and rights holder | Agree destruction or release by consent |
Evidence at every stage is documentary: the application for action, proof of the right, and proof of the goods' origin. Nothing here turns on oral argument at the customs stage.
Two situations that change the answer
If the dispute is not about the goods but about who actually owns the underlying right, the customs procedure cannot resolve that question on its own. A separate ownership dispute, of the kind described in When a development partner claims joint ownership and its, has to be settled before the customs claim can stand cleanly on one side.
If the shipment or its supporting documentation involves a tokenised certificate of authenticity or a smart-contract-based licence, control of that record matters as much as control of the goods. The issues in When the issuer loses control of the contract and can overlap with a customs dispute when the proof of right sits on a ledger rather than on paper.
What this page does not cover
This page covers the customs procedure itself: the notice, the window, and who decides. It does not cover the merits of the underlying patent dispute, the cost of a full infringement action, or how to check the standing of the party on the other side of the shipment. For that last point, a counterparty check follows a different process; see Counterparty in Singapore explained for what such a check can establish.
Sources and verification
Checked and current as at this review. Primary source: Regulation (EU) No 608/2013 concerning customs enforcement of intellectual property rights, EUR-Lex. Where a shipment sits within the scope of the Unified Patent Court system, the underlying right may also be governed by the Agreement on a Unified Patent Court; this page does not extend into that question and treats it as out of scope. If you want to understand how a matter like this would be staffed, see How the team hires.
Related situations
A detention dispute sometimes coincides with a decision on whether to keep a granted patent inside the new unitary system or outside it. If that window is also closing for you, see When the opt-out window is closing on a family.
FAQ
What is the first step when a customs authority detains a shipment?
Read the notice fully and confirm the deadline stated in it before doing anything else. Every later step depends on that date.
Which deadline is already running?
The response window set out in the notice under Regulation (EU) No 608/2013 begins on the date of detention, not on the date you open the letter.
Who decides, and on what evidence?
The customs authority administers the suspension on documentary grounds. Any contested question of infringement moves to a court or the forum named in the notice.