Cross-border service of documents: documents to prepare
Cross-border service in a patent dispute needs four things ready before any authority will act: the document to be served in final form, a certified translation, a completed request form, and proof of the recipient's address. Missing any one of them stops the process and the request has to start again.
How the request is prepared
The receiving authority in the other country sets the exact form of the request. It is not a letter between lawyers. A structured request, together with the document to be served, goes through a formal channel — a central authority, a court, or a licensed process agent, depending on the country. That channel decides whether the file is complete before anything moves.
Each country runs its own version of this channel. Some accept electronic filing, others still require a paper original with a wet signature. Confirming the channel's own requirements before assembling the file saves a full cycle of correction.
What changes once the file is filed
An incomplete file does not fail quietly. Most receiving authorities return it without action, and the sending party often learns this weeks later. Every rejected round adds the time needed for retranslation or reformatting on top of the wait already built into the schedule.
In a patent dispute, that delay can push a response deadline or a counterclaim window past the point where it still counts. The document itself may be sound. The file around it is what fails.
Documents to prepare
The table below sets out what a complete file usually contains and who is responsible for each piece.
| Document | Why it is required | Who prepares it |
|---|---|---|
| Document to be served (claim, notice, order) | This is the content the recipient must actually receive | Claimant's counsel |
| Certified translation | The recipient must be able to read it in an official language of its country | Sworn or certified translator |
| Request or transmission form | Tells the receiving authority what action to take with the file | Sending authority or counsel, on its own template |
| Proof of the recipient's address | Confirms the file is going to the correct entity | Claimant, from a corporate registry or contract |
| Power of attorney | Confirms who is authorised to act for the claimant | Claimant, signed and dated |
| Record of prior attempts, if any | Shows the file was not submitted prematurely | Claimant's counsel |
In practice, assembling this file follows a fixed order:
- Finalise the document to be served. No draft language, no placeholder names.
- Commission a certified translation before submission, not after a rejection.
- Complete the receiving authority's own request form; a generic cover letter is not a substitute.
- Confirm the recipient's current registered address through a corporate registry extract.
- Attach the power of attorney for whoever signs the request.
- File a copy with the originating court or authority so the record shows when the process started.
Who decides and how long it takes
The receiving authority or court in the recipient's country decides whether service is valid. The sending party and its counsel do not make that call. A deadline for the recipient to respond is usually calculated from the date the receiving authority can prove receipt, not from the date the file was sent.
This distinction matters for scheduling. A claimant tracking its own despatch date, rather than the confirmed receipt date, can misjudge how much time actually remains before the next procedural step.
If your situation differs
A company defendant and an individual defendant are not served the same way. A company's registered address usually governs; an individual may need to be reached at a residence or, in some countries, through publication if no address can be confirmed.
If the dispute traces back to who owns the invention rather than who is infringing it, the service question sits inside a wider ownership fight. That situation is common when a co-founder has already left with the working prototype — see When a founder leaves with the prototype explained for how that risk is priced.
If the underlying claim is a cross-border royalty recovery rather than an infringement action, the service stage feeds into a different enforcement timeline with its own stages — see Royalty enforcement step by step explained.
Sources and limits
This page covers the file that has to be assembled and the order in which it moves. It does not cover national filing fees, translation costs, or the specific form used by any single country's receiving authority — those vary and change on their own schedule.
It also does not verify who the other side actually is. Where the counterparty is a company registered abroad, that factual groundwork is covered separately — see Counterparty in Finland in practice for what can be established before service is even attempted.
The team maintaining this file is described at The people behind the reports in practice.
Last checked: 3 March 2025, against the public procedural guidance published by the receiving authorities named in the sections above.
Related reading
For a related procedure inside a patent dispute, see Opposition before the granting office step by step.
FAQ
How long does cross-border service of documents take in practice?
Timing depends on the receiving country's own channel and workload, not on one fixed figure. A complete, correctly translated file moves faster than one that gets sent back for correction. Build at least one round of resubmission into any internal deadline.
Which documents are needed to start?
At minimum: the document to be served in final form, a certified translation, the receiving authority's own request form, proof of the recipient's current address, and a power of attorney for whoever files the request.
What happens if the other side does not respond?
Non-response does not stop the case. Once the receiving authority certifies that service was attempted or completed under its own rules, the originating court can usually proceed on that record, including by default where local procedure allows it.