File an invention or utility-model application based on a priority application, PCT record or China-first technical disclosure.
China patent
File or prosecute a patent application in China
Ask Zhiquan to file a China invention or utility-model application, prepare filing documents or respond during CNIPA examination. We work with overseas applicants, R&D teams, in-house counsel and foreign patent firms.
Ask about a China patent filingTell us the filing objective, current stage and any known deadline. We will confirm the documents needed.
When this service can help
New China applications and existing CNIPA prosecution
Review and respond to a CNIPA office action or another communication in an existing application.
Handle applicant, inventor, priority or bibliographic changes connected with an active China application.
What to prepare
Information to send for a filing or prosecution review
Send the application record and available technical documents. We will identify anything else needed for the filing or response.
- 01
Technical disclosure
The available description, claims, abstract and drawings, or a summary of the technical problem and proposed solution.
- 02
Filing objective
Whether the instruction concerns an invention, utility model, dual filing or an existing application.
- 03
Applicant and inventors
The intended applicant and known inventor names, including any ownership or assignment context that needs review.
- 04
Priority record
Any earlier filing, priority claim, disclosure date or related application already known.
- 05
Existing China record
Any application, publication or patent number and the latest relevant official communication.
- 06
Timing and objective
The earliest known date, the source of that date and the result the team is seeking next.
How we handle the work
From technical documents to filing and CNIPA updates
The exact drafting, translation and prosecution work depends on the available documents, filing history and client objective.
- 01
Review the instruction
Confirm the filing type, technical objective, parties, priority record and any active deadline.
- 02
Organize parties and technical record
Align applicant, inventors, priority information and the available technical materials.
- 03
Review document requirements
Identify missing documents, translation needs, known notices and timing assumptions.
- 04
Confirm the quote and work
Set out the drafting, translation, filing or response work, fee, assumptions and client decisions required.
- 05
File, prosecute and report
Provide the filing receipt or response record, report the next deadline and continue the agreed prosecution work.
What can affect the filing
Issues that can change a China patent strategy
Disclosure, ownership, priority and official deadlines can affect the filing or prosecution work and should be identified early.
Premature disclosure
A public or commercial disclosure may affect the available filing analysis and required timing.
What to check: State known disclosure dates without sending sensitive technical files through an unconfirmed channel.
Party and ownership mismatch
Applicant, inventor and assignment records may not reflect the intended ownership chain.
What to check: Identify the relevant parties and any known transfer or employment context.
Priority inconsistency
Dates, applicants or technical content may differ across the earlier record and proposed China filing.
What to check: Provide the exact earlier filing numbers, dates and available documents.
Official notice or deadline
An existing application may have a notice that changes the work required immediately.
What to check: Provide the public number, notice date and earliest deadline being relied on.
Before work begins
We confirm what is included, the fee and who will handle it
- Service scope Patentability opinions, ownership analysis and contentious work are quoted separately where required; no filing can guarantee grant, validity or enforceability.
Frequently asked questions
Common questions about filing a patent in China
These answers cover common starting questions. The actual record, documents and deadline may change what is needed.
Can a foreign company file a patent in China?
Yes. Overseas applicants can seek patent protection in China. The appropriate filing method and documents depend on the application history, priority position and applicant details.
Should we file an invention patent or a utility model in China?
The choice depends on the technical subject, commercial objective, preferred examination process and available disclosure. Send the available technical information and we can compare the options.
Can Zhiquan respond to an existing CNIPA office action?
Yes, subject to review of the application record, the office action, the response deadline and the requested scope.
What documents are required for a China patent filing?
The usual starting set includes the applicant and inventor details, description, claims, abstract, drawings and priority information. We confirm the exact documents after reviewing the filing method and available record.
How are China patent deadlines confirmed?
We check the applicable official communication and filing record for the accepted instruction and report the deadline in writing.
Next step
Send us the filing objective and available patent documents
Tell us the filing objective, current stage and any known deadline. We will confirm the required documents, proposed work and fee.