China PCT National Phase Translation: Scope, Deadlines and Corrections
A China PCT national phase translation is more than a Chinese version of the international publication. The filing team may need to coordinate the original description and claims, abstract, drawing text, Article 19 claims, Article 34 annexes, and the Chinese national-phase declaration—all against a deadline that is normally 30 months from the priority date.
This guide concerns entry before the China National Intellectual Property Administration (CNIPA) in mainland China. It does not cover direct Chinese filings, patentability strategy, or the separate steps required to obtain protection in Hong Kong.
Key takeaways
- China’s ordinary deadline is 30 months, not 32 months. Entry after 30 months but no later than 32 months requires a late-entry surcharge, currently CNY 1,000.
- The required Chinese materials extend beyond the description and claims. The abstract, applicable drawing copies, and text appearing in drawings must also be handled.
- One international publication PDF may not be the complete source set. The as-filed text, Article 19 claims, Article 34 annexes, and accompanying statements require separate version control.
- Translation correction is not an unlimited second chance. CNIPA permits corrections within defined windows, but not a strategic rewrite or the addition of subject matter absent from the original international application.
Who this guide is for
This China-wide guide is for foreign companies, inventors, university technology-transfer offices, research institutions, patent paralegals, overseas patent counsel, and in-house IP teams preparing a foreign-language PCT application for entry before CNIPA.
The most familiar workflow is English to Simplified Chinese, although Japanese, German, French, Korean, Spanish, Russian, and other source languages also arise. No reliable official dataset establishes a ranking among those additional language pairs.
A typical file set includes the as-filed description and claims, abstract, drawings, international publication, Article 19 amended claims and statement, Article 34 amendments annexed to an international preliminary examination report, bibliographic data, and written instructions identifying the version on which the Chinese proceeding should be based.
This guide is particularly relevant when the 30-month deadline is approaching, drawing sheets contain untranslated text, different amendment sets are circulating, or a possible error has been discovered in Chinese text already filed.
China PCT national phase translation requirements
International applicants often search for a certified translation. That phrase can describe a professionally prepared and quality-controlled translation, but it is not the operative CNIPA term. The legal requirement is the required Chinese translation of the international application.
CNIPA does not prescribe a general sworn-translator status, notarization, or English-style certificate of accuracy for the core description, claims, abstract, and drawing text. Accuracy, completeness, source fidelity, and correct filing through the Chinese representative matter more than attaching a generic certificate. For the broader distinction, see certified versus notarized translation.
| Component | China national-phase treatment | Primary control point |
|---|---|---|
| Chinese entry declaration | The declaration is filed in Chinese and identifies the international application number and requested type of patent protection. | Names, title, applicant data, and the international record must be reconciled by Chinese patent counsel. |
| Original description | A Chinese translation is required when the international application was filed in another language. | Translate from the confirmed as-filed text, not an edited convenience copy. |
| Original claims | A Chinese translation forms part of the minimum entry materials for a foreign-language application. | Preserve numbering, dependencies, antecedent basis, units, and terminology. |
| Abstract | A Chinese translation is required. | Do not omit it merely because the abstract does not determine the final claim scope. |
| Drawings and abstract drawing | Applicable drawing copies must be submitted. Text in the drawings must be replaced with corresponding Chinese text. | Distinguish translatable prose from reference numerals, formulas, symbols, and variables. |
| Article 19 amendments | Article 19 concerns claims only. If the applicant wants the amended claims considered in China, the amended set and any relevant statement require separate handling. | Do not discard the required translation of the original claims. |
| Article 34 amendments | Article 34 amendments may affect the description, claims, and drawings. Relevant annexes require separate translation if they are to form the examination basis. | Map each replacement sheet to the correct IPER or IPRP annex set. |
| Sequence listing | A sequence listing should not be treated as an ordinary document translation. ST.26 format and language-dependent free text require case-specific review. | Confirm current electronic-format requirements with the Chinese patent agency. |
The current WIPO PCT Applicant’s Guide for China identifies the request, description, claims, drawing text, and abstract within the translation scope, with separate treatment for Article 19 and Article 34 amendments. CNIPA’s official PCT portal provides current forms, guidance, and procedural notices.
Required documents do not all have the same procedural consequence
Rules 120–122 of the Implementing Regulations of the Patent Law draw an important distinction. The Chinese entry declaration, required fees, and Chinese translations of the original description and claims are among the minimum acts that must be completed by the applicable 30- or 32-month limit. If those minimum requirements remain unsatisfied when the 32-month period expires, the international application’s effect in China terminates.
The abstract, drawing copies, translated drawing text, bibliographic particulars, and certain supporting items are also required, but specified deficiencies may instead lead to a CNIPA invitation to correct them within a set period. This distinction is not permission to file an incomplete packet intentionally; it explains why counsel should classify every item before the deadline rather than treating all omissions as legally identical.
Do patent drawings need Chinese translation for CNIPA?
Drawings are not automatically outside the translation scope. This is one of the most consequential misconceptions in a China national-phase filing.
Lines, shapes, reference numerals, formulas, and technical symbols are not rewritten merely to make a drawing appear Chinese. Textual labels, explanatory phrases, flowchart boxes, legends, and similar language-dependent content must, however, be replaced with corresponding Chinese text while preserving the relationship between the drawing and specification.
A drawing QA pass should check:
- whether every text-bearing figure has been inventoried;
- whether each component uses the same Chinese term in the claims, description, and drawing;
- whether reference numerals remain unchanged;
- whether translated text obscures lines, arrows, or callouts;
- whether figure numbers and page order still match the source set; and
- whether an abstract drawing has been identified when the international record contains one.
A translator’s certificate cannot cure a missing figure, incorrect reference numeral, or untranslated text embedded in an image.
Is China’s PCT deadline 30 months or 32 months?
The standard deadline is 30 months from the priority date. Rule 120 permits the required entry acts to be completed no later than 32 months when the applicant pays the prescribed late-entry surcharge. The current WIPO China chapter lists that surcharge as CNY 1,000, but the filing agency should recheck the fee before submission.
| Timing point | Meaning | Translation consequence |
|---|---|---|
| By 30 months | Ordinary national-phase entry period. | Complete source locking, translation, attorney review, filing preparation, and payment before this deadline. |
| After 30 but no later than 32 months | Fee-based late-entry route under China’s implementing rules. | Do not treat this as free production time. The minimum documents, agency instructions, applicable fees, and surcharge still must be completed correctly. |
| After 32 months | The ordinary late-entry route has expired. | WIPO currently records that CNIPA does not permit reinstatement under PCT Rule 49.6. Obtain Chinese patent-law advice immediately instead of assuming the translation can be filed later. |
Electronic documents are considered submitted when they enter CNIPA’s designated system. Filing and payment should therefore be confirmed through the official case record. Uploading documents or arranging payment on the final day creates an avoidable failure point.
The practical timeline should run backward from 30 months:
- Confirm the priority date and deadline with Chinese patent counsel.
- Obtain the complete international-stage record rather than only the WO publication.
- Decide which international amendments, if any, should form part of the Chinese examination basis.
- Translate and align the original application and approved amendment sets.
- Review terminology, claim dependencies, drawing text, and file completeness.
- Allow the Chinese patent agency time to prepare the declaration, submit through the CNIPA Patent Business Processing System, complete payment, and verify the electronic receipts.
Article 19 and Article 34 amendments: build a version matrix
The correct Chinese filing may be assembled from several authoritative sources. Treating the latest-looking PDF as the sole source can silently merge or omit legally distinct versions.
Article 19 amendments affect claims only. Article 34 amendments may affect the description, claims, and drawings. CNIPA’s official explanation of Articles 19 and 34 describes this distinction.
Under Rule 123 of the Implementing Regulations, an applicant who wants an international-stage amendment to form the basis of Chinese examination must submit a Chinese translation of the amended portion within two months from the national-phase entry date. If the translation is not supplied within that period, CNIPA will not consider the international-stage amendment.
This two-month rule does not eliminate the minimum entry requirement for Chinese translations of the original description and claims. The safest approach is to prepare both the original and intended amended sets before entry and have the Chinese patent agency confirm the examination-basis declaration.
| Source layer | What to preserve | Who decides its procedural use |
|---|---|---|
| As-filed international application | Original description, claims, abstract, and drawings with stable page identifiers. | It is the controlling source for translation fidelity. |
| International publication | Publication pagination, bibliographic record, and published international-stage material. | Useful for reconciliation, but not automatically the only translation source. |
| Article 19 set | Complete replacement claims and any accompanying statement. | The applicant and Chinese patent attorney decide whether to rely on it. |
| Article 34 set | Every replacement sheet annexed to the international preliminary examination record. | The applicant and Chinese patent attorney decide whether it is the intended examination basis. |
| Chinese translation package | Target filename, source filename, source pages, target pages, version label, open queries, and revision history. | The translation team prepares it; Chinese counsel approves it for filing. |
A useful handoff instruction is explicit: “Translate the as-filed application as the original text; separately translate Article 19 claims A19-1 through A19-12; separately translate the Article 34 replacement pages annexed to the IPER.” Avoid vague directions such as “use the latest claims.”
Source-version control checklist
- Download the as-filed application and international publication from an authoritative case record.
- Record whether the international application was corrected, rectified, or supplemented.
- Keep Article 19 claims and their statement in a separate folder.
- Extract Article 34 replacement sheets from the correct IPER or IPRP annex set.
- Use immutable source filenames containing the document type and official date.
- Create a page-level source-to-target manifest.
- Lock a bilingual terminology list before finalizing the claims.
- Reconcile claim dependencies, mathematical signs, ranges, units, chemical names, and reference numerals.
- Require written confirmation from Chinese counsel of the examination basis.
- Do not allow a translator to make substantive claim-strategy decisions.
For broader questions about representation and ownership documentation, use the separate China patent agency and ownership-chain guide. Local pre-examination programs are outside this national-phase translation reference; the Qingdao patent filing and pre-examination guide covers that distinct workflow.
Correcting a Chinese translation after entry
CNIPA’s current implementing rules permit correction of errors in the Chinese translation of the description, claims, or drawing text by reference to the original international application. This mechanism protects fidelity to the source; it is not a substitute for ordinary amendment practice or a way to introduce new technical matter.
For an invention application, an applicant may request correction before CNIPA completes preparations for publication or within three months after receiving the notice that the application has entered substantive examination. For a utility model, the voluntary window runs before preparations for the grant announcement are completed. CNIPA may also require a correction within a specified period; failure to complete the required procedure can result in the application being deemed withdrawn. These rules appear in Rule 131 of the current Implementing Regulations.
The current WIPO China chapter lists translation-correction fees of CNY 300 during preliminary examination and CNY 1,200 during substantive examination. Fees and forms can change, so verify them before submission.
What can fit within the correction procedure?
- an omitted technical term, sentence, or limited passage;
- an inaccurate translation that can be objectively reconciled to the original international application;
- a mistranslated relationship, value, unit, or claim expression where the corrected Chinese wording restores the source meaning; or
- incorrect textual matter in a drawing where the correction follows the original drawing.
What should not be treated as a translation correction?
- a wholesale replacement of a poor Chinese specification;
- a new limitation or technical feature absent from the original international application;
- a strategic claim rewrite presented as linguistic repair;
- an attempt to switch silently from the original claims to an undeclared amendment set; or
- Chinese text so extensively inconsistent with the source that the request is no longer a limited correction.
The counterintuitive lesson is that paying a correction fee does not create a right to retranslate the application from scratch. Initial source control and technical QA are therefore substantially safer than relying on later repair.
Practical failure patterns before filing
The “WO publication only” packet
The coordinator sends one publication PDF to the translator without the Article 34 annexes. The Chinese agency later learns that the applicant wanted the IPER amendments considered. The solution is to assemble and approve the source matrix before translation begins.
The drawing-text blind spot
The description and claims are complete, but flowchart boxes retain English text. A final visual inspection—not merely text extraction—is needed for every drawing page.
The “we will fix it later” translation
A rushed draft is filed on the assumption that it can be comprehensively replaced during substantive examination. CNIPA’s correction rules are narrower than that assumption. A deadline problem should be managed through early resourcing and counsel coordination, not by intentionally filing unreliable text.
China-specific timing and cost markers
| Marker | Current rule or published amount | Why it matters |
|---|---|---|
| Ordinary entry period | 30 months from the priority date | This should drive the translation production plan. |
| Late-entry limit | 32 months with the prescribed surcharge | It is a paid grace route, not the default deadline. |
| Late-entry surcharge | CNY 1,000 | This is an avoidable cost and a signal that the filing is already in a high-risk window. |
| International amendment translation | Within two months from entry when the amendment is to form the examination basis | The team must identify and translate the relevant Article 19 and Article 34 material before the window closes. |
| Preliminary-stage translation correction | CNY 300 | Early detection is less expensive and procedurally simpler. |
| Substantive-stage translation correction | CNY 1,200 | Later discovery costs more and remains subject to the limited correction standard. |
| Substantive-examination correction window | Three months after the relevant notice for an invention application | The date of the CNIPA notice must be docketed promptly. |
CNIPA does not publish a dependable language-pair breakdown or translation-error success rate. Those percentages should not be inferred from commercial claims. The statutory periods and published fees above are the useful planning data.
Commercial service roles: translation versus legal filing
CNIPA’s national-phase rules do not make selection from an approved translation-company list part of the entry requirements. Provider selection should focus on the work product and each provider’s authorized role.
| Commercial role | Appropriate work | Questions to ask | Boundary |
|---|---|---|---|
| Patent translation and version-QA provider | Chinese description, claims, abstract, drawing text, terminology control, source mapping, formatting, and revisions. | Will the delivery separate as-filed, Article 19, and Article 34 text? Is drawing text visually checked? Is a page manifest included? | Does not decide claim strategy, calculate the final legal deadline, or represent the applicant before CNIPA. |
| Licensed Chinese patent agency | National-phase declaration, examination-basis confirmation, filing, fees, docketing, CNIPA correspondence, and correction requests. | Who is the responsible patent attorney? Has the agency confirmed every source version and payment instruction? | Its legal filing role should not be confused with a translator’s production role. |
| Applicant’s in-house or established patent vendor | Existing terminology corpus and subject-matter knowledge. | Can it meet CNIPA-specific version, drawing, and handoff requirements? Who performs independent QA? | Familiarity with the invention does not itself authorize CNIPA representation. |
CertOf can prepare a Simplified Chinese translation and version-alignment package for review by the applicant and Chinese patent agency. Its role is document translation and preparation, not legal representation or CNIPA filing. Teams managing repeat portfolios can also review bulk translation workflows for law firms and CertOf’s published translation quality controls.
Official public resources and verification channels
| Public resource | Use it for | Cost and contact |
|---|---|---|
| CNIPA PCT portal | Current national-phase guidance, forms, notices, and PCT resources. | Free public information; customer service: 010-62356655; PCT email: [email protected]. |
| CNIPA Patent Business Processing System | Official electronic filing, online payment, and case-processing functions used by authorized filers. | Government system; filing fees depend on the application and requested acts. |
| WIPO PCT Applicant’s Guide—China | National-phase deadlines, translation scope, agent requirements, fees, and PCT reservations. | Free international public guidance. |
| CNIPA patent-agency administration portal | Checking whether a Chinese patent agency and patent attorney have publicly recorded credentials. | Free official verification resource. |
Fraud and unauthorized-provider warnings
A letter or email is not an official CNIPA invoice merely because it displays a WO publication number, Chinese application data, or an urgent payment date. Before paying, compare the demand with the official electronic case record and obtain written confirmation from the appointed Chinese patent agency.
Warning signs include an unlicensed intermediary promising guaranteed acceptance, a provider claiming that any missed 32-month deadline can be restored, or a translation company offering to choose claim amendments without attorney instructions. Agency credentials can be checked through the CNIPA patent-agency administration portal. Procedural or fee questions can be raised through the CNIPA PCT portal, at [email protected], or through CNIPA customer service at 010-62356655.
Does China national-phase entry cover Hong Kong?
Not automatically. Hong Kong operates an independent Patents Registry. For a PCT application designating China, Hong Kong protection requires the applicable further procedure before the Intellectual Property Department of the Hong Kong Special Administrative Region; valid mainland national-phase entry alone does not complete that registration. The WIPO China national chapter explains the separate Hong Kong route.
Frequently asked questions
What parts of a PCT application must be translated into Chinese?
The required scope includes the original description and claims, abstract, and textual matter in drawings, together with the Chinese national-phase declaration and applicable drawing copies. Article 19 or Article 34 amendments require separate treatment when the applicant wants them considered as the examination basis.
Is China’s PCT national-phase deadline 30 months or 32 months?
The ordinary deadline is 30 months from the priority date. Completion after 30 months but no later than 32 months is a late-entry route requiring the prescribed surcharge; it is not an automatic standard deadline.
Is the extra two-month period automatic?
No. The filing must meet the applicable entry requirements by 32 months and include the prescribed late-entry surcharge. The two months should not be treated as an informal extension requiring no procedural action.
Must both the original and Article 19 amended claims be translated?
The original claims are part of the minimum translation package. If Article 19 amended claims are to form the examination basis, identify them in the filing instructions and supply their Chinese translation within the applicable two-month post-entry period.
How are Article 34 amendments handled?
Article 34 amendments may cover the description, claims, and drawings. Use the replacement sheets annexed to the correct international preliminary examination record, map them separately, and have Chinese patent counsel confirm their use as the examination basis.
Do drawings need Chinese translation?
The drawing graphics are not translated as prose, but language-dependent text in labels, legends, and flowcharts must be replaced with corresponding Chinese text. Reference numerals, formulas, symbols, and variables should remain correctly aligned rather than being mechanically translated.
Does CNIPA require a certified translator or notarized translation?
CNIPA’s core requirement is a compliant Chinese translation, not a general sworn-translator appointment or notarized certificate for the technical application text. A professional certificate may support procurement or recordkeeping, but it does not replace substantive accuracy or filing through the proper representative. See who signs CertOf’s translation certificate for the service-specific process.
Can a translation error be corrected after entry?
Yes, within the statutory correction framework. The corrected wording must restore fidelity to the original international application, and the request must meet the applicable timing, document, and fee requirements. The procedure is not an unrestricted right to rewrite the Chinese application.
Can a foreign applicant submit the translation directly?
An applicant without a habitual residence or business office in mainland China generally must use a legally established Chinese patent agency. The agency should confirm the examination basis, deadline, forms, fees, and submission; a translation provider can prepare the document package.
What if the 32-month date has passed?
Seek Chinese patent counsel immediately. Do not assume PCT Rule 49.6 will restore the application: WIPO currently records that CNIPA does not permit reinstatement under that general PCT mechanism. Any separate national-law remedy is fact-specific and should not be treated as a routine extension.
Prepare the translation package before the deadline becomes the project
Upload the complete PCT source set to CertOf for Simplified Chinese translation, drawing-text preparation, terminology control, and source-version alignment. Include the as-filed application, international publication, Article 19 materials, Article 34 annexes, and written instructions from Chinese patent counsel.
CertOf prepares the translation package for review; your licensed Chinese patent agency must confirm the legal deadline, examination basis, forms, fees, and filing with CNIPA. If this is your first online translation order, see the document upload and ordering guide.
Disclaimer: This article provides general information, not Chinese patent-law advice. PCT records, fees, forms, deadlines, and procedural requirements can change or depend on the individual application. Confirm current requirements with CNIPA, WIPO, and a licensed Chinese patent agency before acting.