How long does an applicant have to request CNIPA patent reexamination?

Article 41 of the Chinese Patent Law states that an applicant may request reexamination within three months from receipt of the rejection decision. The receipt date should be verified from the official file; a publication or database update date is not a substitute.

What should foreign counsel send for a first review?

A redacted rejection decision, the receipt date, current claims, specification, cited references, earlier office actions and responses, the commercial claim-scope objective, and any immediate deadline are usually enough for an initial merits and scope review.

Does Fixer IP guarantee that reexamination will succeed?

No. Past case outcomes illustrate methods only. No allowance, grant, claim scope, timing, or reexamination outcome is guaranteed.

Is outcome-aligned or pure-risk pricing available?

Outcome-aligned terms may be considered only for selected matters after a merits review. The scope, success milestone, exclusions, official and third-party costs, and fee trigger must be agreed in writing.

For foreign patent firms, patent attorneys, and in-house teams

China Patent Reexamination and Difficult CNIPA Rejection Strategy

Deadline-sensitive, technically grounded support behind your firm.

The short answer: Fixer IP helps foreign counsel evaluate and respond to difficult CNIPA rejection decisions. We check the procedural clock, reconstruct the examiner's inventive-step logic, test amendment options against commercial claim scope, and prepare a reexamination strategy for responsible counsel's review. China-side formal work is handled through the licensed structure identified on this site, subject to conflict clearance and written engagement terms.

FOCUS: CNIPA REEXAMINATION CLIENTS: FOREIGN COUNSEL & IN-HOUSE TEAMS MODEL: BEHIND-THE-FIRM OR CHINA-SIDE HANDLING

What the service covers

A reexamination plan built from the rejection record.

A useful CNIPA reexamination is not a longer version of the last office-action response. It should identify the exact reasoning that led to rejection, decide what must be preserved, and choose an argument or amendment route that the record can support.

1. Deadline and file-status triage

Verify the rejection decision, receipt information, current procedural posture, and any immediate filing or fee deadline.

2. Examiner-logic reconstruction

Map the closest prior art, distinguishing features, alleged motivation to combine, common-knowledge assertions, and technical effects.

3. Claim-scope decision

Compare argument-only, focused amendment, and fallback routes against the client's commercially meaningful scope.

4. Reexamination work product

Prepare a review-ready strategy, amendment options, evidence plan, and argument framework for filing counsel.

The first question is procedural

The three-month period runs from receipt, not from a data-platform update.

Do not calculate the deadline from a PRSS batch date, search-platform label, or publication feed.

Article 41 of the Chinese Patent Law states that an applicant may request reexamination within three months from receipt of the rejection decision. For urgent matters, responsible counsel should verify the official delivery or receipt information and calculate the formal deadline.

Example: if a commercial database first shows “rejected” on 30 June, that does not prove the applicant received the decision on 30 June. The decision may have been issued or received earlier, so treating the database date as the deadline basis can create a false sense of time.

Evidence, not a ranking slogan

Representative CNIPA reexamination outcomes.

These partially sanitized matters show the reasoning pattern and procedural outcome. They do not guarantee a similar result.

AI production-line control

The rejection treated shared algorithm vocabulary as shared technical teaching. Reexamination separated risk prediction from actuator-vector control; the rejection was revoked in about three months and the case proceeded to grant.

Read the case

Biodegradable extrusion mixing

The response replaced surface-feature comparison with operating-principle comparison. After rejection, reexamination, remand, and a second response, the application was granted.

Read the case

Precision-part gold plating

The reexamination route exposed why the proposed prior-art combination could not deliver the claimed coordinated treatment. The rejection was revoked and grant followed.

Read the case

Biomass supply-chain system

The case was reframed from ordinary business management to a computable technical system addressing incomplete supply-chain data. Reexamination succeeded and the application proceeded to grant.

Read the case

Open the reexamination case hub

How foreign counsel can use us

Keep the client relationship and decision-making under your control.

Behind-the-firm strategy support

We prepare the diagnosis, response architecture, amendment options, and technical reasoning. Your firm remains responsible for client advice, final legal judgment, and filing instructions.

China-side formal handling

Where needed, formal CNIPA work can be handled through our licensed China-side structure, identified as Beijing Dingdebao Patent Agency, CNIPA agency code 11823, after conflicts and scope are confirmed.

Outcome-aligned terms are selective, written, and never a promise of grant.

Outcome-aligned CNIPA reexamination support may be available only for selected matters after a merits review. The success milestone, scope, exclusions, fee trigger, official fees, third-party costs, and stopping conditions are agreed in writing. No outcome is guaranteed.

For a first matter, a review-before-payment structure may also be available after the scope and fee are agreed. Payment is tied to the professional usefulness and use of the work product, not to a guaranteed prosecution result.

Frequently asked questions

Questions foreign counsel usually asks first.

How long is the CNIPA reexamination deadline?

Three months from receipt of the rejection decision under Article 41. The official receipt or delivery record should be checked for the formal calculation.

What should we send for the first review?

A redacted rejection decision, receipt date, claims, specification, cited art, prior responses, commercial scope objective, and the current deadline.

Can you work without contacting our client?

Yes. Our normal peer-firm model is behind-the-firm support. We do not contact the end applicant unless expressly instructed.

Do you guarantee reversal or grant?

No. We give a merits-based strategy view and define the work scope; we do not guarantee reexamination, allowance, grant, timing, or claim scope.

Primary legal sources

Official CNIPA references.

This page is general professional information, not legal advice for a specific matter. Updated 6 October 2026.

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