What should China IP due diligence check?
Check the exact rights, current owners, legal status, deadlines, encumbrances, licences, disputes, chain of title and relevance to the target business. High-value conclusions should be supported by current official records, not portfolio spreadsheets alone.
Why it matters
Put the question in the right procedure and timeline
A useful dispute assessment begins with the exact right, current owner, accused act, evidence source and deadline. Enforcement should not start from screenshots alone or from an unverified database entry.
What changes the answer
What can change the answer
Define the transaction date and materiality threshold, then produce an exception list for missing ownership, lapsed rights, unresolved disputes and coverage gaps.
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
Official right numbers and documents showing current ownership and status.
- 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
Verify the right and the parties before characterising the dispute.
Check whether this fact changes the answer: Define the transaction date and materiality threshold, then produce an exception list for missing ownership, lapsed rights, unresolved disputes and coverage gaps.
Compare administrative, judicial and negotiated routes against the business objective.
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.
- CNIPA Official Q&A on patent legal-status searches and register copies
- CNIPA Patent Law of the People's Republic of China
- CNIPA Trademark Law of the People's Republic of China, 2019 text
Prepared and checked by Zhiquan IP against the listed primary materials. Cross-check the organization and contact details on the Credentials page.