Should I file before disclosing an invention in China?
Usually yes. China applies an absolute-novelty framework, and the statutory exceptions for certain disclosures are limited. Filing before a public launch, exhibition, paper, sale offer or unrestricted pitch is the safer rule.
Why it matters
Put the question in the right procedure and timeline
A filing-route or timing error can affect novelty, ownership or the right to claim priority. The correct answer depends on the invention, where it was completed and what has already been disclosed.
What changes the answer
What can change the answer
Build a disclosure timeline immediately if anything has already been shown. Do not assume a general twelve-month grace period applies in China.
Do not act on the summary alone for a live matter. An official record, service date, document version, party identity or transitional rule can change the conclusion.
What to prepare
Prepare these three points
- 01
A short description of the invention and the intended commercial use.
- 02
The latest official record, notice or filing document for this issue.
- 03
A timeline of key events, the earliest known deadline and the result you need.
Next step
Apply the answer to your actual record
Confirm what is being protected and who should own the application.
Check whether this fact changes the answer: Build a disclosure timeline immediately if anything has already been shown. Do not assume a general twelve-month grace period applies in China.
Have China counsel verify any confidentiality-review or priority issue.
Official sources
Official sources used for this article
These links lead to original CNIPA, WIPO or Supreme People's Court materials. Check the latest text, effective date and matter-specific procedure when acting.
Prepared and checked by Zhiquan IP against the listed primary materials. Cross-check the organization and contact details on the Credentials page.