Submitting a priority document in China — how must it be translated and certified?

The issue to settle here is “Submitting a priority document in China”, so it separates what is specific to this file from the standard certification chain. Public holidays and embassy closures move certification queues more than most people expect. Documents with a short validity window should be produced as close to the filing date as possible. Keep a copy of every source document plus the receipt or docket from each step. Note who signed each certification and on what date for later reference. Once the set is complete, check it line by line against the destination's own checklist before filing. The specifics here are document type: Priority; destination: Cn, and those decide which translation and certification level applies. The terms that frame this page are Submitting · priority · document · China. The biggest risk in cases like this is doing the certification steps out of order, which forces a restart. The deciding factor is the receiving body's requirement, not only the format of the Thai-side document. Before starting, verify the source document is still within any validity window the recipient applies, then count the number of certified sets needed before work starts, because extra sets restart the certification steps, then confirm with the receiving body whether it wants an original, a certified copy or a certified translation. Thai intellectual-property documents used abroad follow this order: a complete translation, signature certification by a notarial services attorney where the receiver requires it, certification by the Legalisation Division of the Department of Consular Affairs, Ministry of Foreign Affairs, then the destination embassy or consulate where required. Confirm the order with the receiving party first — skipping one step means starting again. IP translation must keep every number and term exact: application and registration numbers, filing and priority dates, Nice classes for goods and services, each claim, and the applicant and inventor names as they appear in the passport or company affidavit. Dates must state whether the Buddhist or Gregorian era is used, and seals and endnotes must be translated in full. Thailand is not a party to the Hague Apostille Convention, so no Apostille is issued for Thai documents. If the receiving party asks for one, explain that Thailand uses Department of Consular Affairs plus embassy legalisation instead, and get written confirmation from the receiver before proceeding. Cost and lead time depend on page count, target language, how technical the text is and the certification steps required, so every file is quoted before work starts. Send scans of every page together with the written requirements from the Department of Intellectual Property, the receiving agent or the requesting authority via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th