PCT National Phase Patent Entry In Pakistan: 31-Month Deadline, IPO Requirements & Translation Rules

Comprehensive legal guide for international patent applicants, multinational corporations, and patent attorneys entering the Pakistan national phase under the Patent Cooperation Treaty (PCT).

By Syed Asad Hussain Zaidi · Advocate High Court & Tax Consultant · 9 September 2026

The 31-Month Window: Under the Patent Cooperation Treaty (PCT) framework, an international patent applicant has exactly 31 months from the earliest priority date to enter the National Phase before the Patent Office of Pakistan (IPO-Pakistan). Governing Statute: National phase prosecution is governed by the Patents Ordinance 2000 and the Patent Rules 2001, harmonized with World Intellectual Property Organization (WIPO) international standards. Language Requirements: All application documents, specifications, claims, and abstracts must be submitted in English. If the international application was published in another language, a certified English translation must be filed. Substantive Examination: Entry into the national phase does not grant automatic patent rights; the applicant must formally request substantive examination under Section 24 within the statutory examination request window. Introduction: The Gateway for Global Inventions into Pakistan Pakistan represents a strategic emerging market of over 240 million consumers with expanding sectors in pharmaceuticals, agritech, renewable energy, telecommunications, and industrial manufacturing. For multinational technology conglomerates, research universities, and global pharmaceutical developers who have filed an international patent application under the Patent Cooperation Treaty (PCT), securing exclusive commercial monopoly rights in Pakistan requires entering the National Phase. Entering the national phase converts an international PCT application into a standalone, enforceable domestic patent application prosecuted directly before the Controller of Patents and Designs at IPO-Pakistan. Failing to meet strict national phase entry deadlines, omitting verified certified assignment documentation, or misinterpreting statutory exclusions under Section 10 can permanently extinguish patent rights across the Pakistani jurisdiction. --- Key Timelines: The 31-Month National Phase Deadline Under PCT Article 22 and 39, applicants benefit from an extended timeline to decide whether to seek protection in individual member states: Strict 31-Month Rule: The deadline to enter the Pakistan National Phase is strictly 31 months from the earliest claimed priority date (or 31 months from the international filing date if no priority is claimed). No Discretionary Extensions: Unlike some patent jurisdictions that permit retroactive late entry upon payment of extension surcharges, the Patent Office of Pakistan enforces the 31-month deadline strictly. If the 31-month cutoff expires without filing, the international application is deemed abandoned with respect to Pakistan, and priority rights are irrecoverably lost. --- Mandatory Filing Requirements for Pakistan National Phase To secure an official filing date and application number, the local patent attorney must submit the following statutory dossier to the Patent Office in Karachi or the regional IPO branches in Lahore or Islamabad: Official Application Form (Form P-1 or Form P-1A): Duly filled and executed by the applicant or authorized patent agent. International Application Documents: Copy of the International Patent Application as published by WIPO (including front page, description, claims, and drawings); International Search Report (ISR) and Written Opinion of the International Searching Authority (ISA); International Preliminary Report on Patentability (IPRP / Chapter II), if applicable; Any claim amendments made under PCT Article 19 or Article 34. Certified English Translation: If the original PCT application was published in a non-English language (e.g., German, Japanese, Chinese, French), a certified translation into English must be submitted under the verification oath of the translator. Power of Attorney (Form P-28): Executed by the authorized corporate signatory of the applicant in favor of the licensed Pakistani Patent Attorney / Advocate High Court. Assignment Deed (if applicant is not the inventor): Under Section 13, if the applicant derived title from the natural inventors, a certified copy of the global assignment deed or a specific Form P-1 assignment endorsement must be submitted. | PCT Document / Stage | Statutory Requirement in Pakistan | Timeline / Deadline | | :--- | :--- | :--- | | National Phase Entry | Form P-1 + WIPO Publication + Specification | Strictly 31 months from priority date | | Certified English Translation | Full specification, claims, and drawing labels | Due at entry (extendable by 1 month) | | Power of Attorney (Form P-28)| Executed corporate legal authorization | Due at entry or within 2 months | | Priority Document | WIPO IB transmission confirms compliance | Handled via WIPO Digital Access Service (DAS) | | Request for Examination | Formal Form P-7 filing + official fee | Within statutory deadline from filing | --- Substantive Examination & Statutory Exclusions under Section 10 Once national phase entry formalities are satisfied, the application does not automatically progress to grant. The applicant must request Substantive Examination: Statutory Exclusions to Note: Under Section 10 of the Patents Ordinance 2000, the Pakistani patent examiner evaluates whether the invention falls into statutory exclusions: Discoveries and Scientific Theories: Abstract scientific formulas or laws of nature are non-patentable. Literary, Dramatic, or Artistic Works: Protected exclusively by copyright, not patent law. Schemes, Rules, or Methods for Performing Mental Acts: Business methods, pure computer software algorithms, and game rules are excluded. Diagnostic and Therapeutic Methods: Methods of medical treatment for humans or animals are non-patentable; however, novel pharmaceutical compounds, formulations, and chemical substances are fully patentable. --- TaxCalc Advisory Insights: Leveraging Accelerated Examination via Foreign Grants While Pakistan does not have a formal Patent Prosecution Highway (PPH) agreement, local patent examiners place immense weight on foreign prosecution records. If corresponding patent claims have already been examined and granted by major patent offices (such as the USPTO, European Patent Office - EPO, or JPO), submitting certified copies of the granted claims along with an aligned claim amendment in Pakistan dramatically accelerates domestic allowance. This strategy cuts prosecution delays from 4 to 5 years down to 18 to 24 months, minimizing local legal costs. --- Term of Protection and Post-Grant Maintenance Upon successful examination, issuance of the acceptance notice, and publication in the official Gazette of Pakistan: 20-Year Term: A Pakistani patent confers exclusive commercial protection for 20 years from the international PCT filing date. Annual Renewal Fees: Commencing from the 4th year, annual renewal annuities must be paid to the Patent Office to maintain the patent in force. Failing to pay renewal fees results in patent lapse under Section 45. --- Frequently Asked Questions (FAQs) Does Pakistan belong to the Paris Convention and the PCT? Yes. Pakistan is a contracting state of the Paris Convention for the Protection of Industrial Property and acceded to the Patent Cooperation Treaty (PCT) in 2001, providing complete reciprocal priority protection for international inventors. Can an applicant amend claims upon entering the Pakistan National Phase? Yes. Applicants can delete, merge, or amend claims upon entry to conform to Pakistani statutory requirements or align with allowed claims from foreign companion jurisdictions. How are corporate patent investments treated for tax purposes in Pakistan? Acquired patent rights and development costs are treated as intangible capital assets and amortized over their statutory legal life under Section 24 of the Income Tax Ordinance 2001. View our <a href="/corporate-tax-calculator">Corporate Tax Calculator</a> for detailed amortization calculations. --- Detailed Official Fee Schedule for Pakistan Patent Prosecution Understanding the official statutory fee structure established under the Patent Rules 2001 ensures accurate client budgeting and prevents procedural delays: | Patent Procedural Milestone | Official IPO Fee (Form) | Statutory Timeframe | | :--- | :--- | :--- | | Application for Patent (Up to 40 pages) | Form P-1 (PKR 6,750 - 15,000) | At National Phase Entry (31 months) | | Excess Page Fee | PKR 150 per page exceeding 40 | At National Phase Entry | | Excess Claim Fee | PKR 300 per claim exceeding 10 | At National Phase Entry | | Request for Substantive Examination | Form P-7 (PKR 10,000 - 25,000) | Within statutory window | | Power of Attorney Filing | Form P-28 (PKR 1,500) | Within 2 months of filing | | Late Document Submission Extension | Form P-4 / Extension petition | Within statutory grace period | | Annual Maintenance (Annuity) - Year 4 | Renewal Fee (PKR 4,500) | Due before end of 3rd year | | Annual Maintenance (Annuity) - Year 10 | Renewal Fee (PKR 12,000) | Due before end of 9th year | --- Responding to Official Examination Reports (OER / FER) Following substantive examination by the technical examiner at the Patent Office: Issuance of First Examination Report (FER): The examiner issues an official report raising formal objections (lack of novelty, obviousness over cited prior art, ambiguous claim wording, or non-patentable subject matter under Section 10). Statutory Response Window: The applicant has 12 months from the date of the FER to satisfy all objections and place the application in order for acceptance. Drafting Claim Amendments: Working with a registered Pakistani Patent Attorney, the applicant can amend claims, file comparative technical declarations, and present persuasive legal arguments demonstrating non-obvious inventive steps over cited global citations. Pre-Grant Opposition Window: Upon acceptance, the application is advertised in the official Patent Gazette. Third parties have 4 months to file an opposition under Section 23 on grounds of prior public knowledge, wrongful obtaining, or insufficient disclosure. --- Detailed Official Fee Schedule for Pakistan Patent Prosecution Understanding the official statutory fee structure established under the Patent Rules 2001 ensures accurate client budgeting and prevents procedural delays: | Patent Procedural Milestone | Official IPO Fee (Form) | Statutory Timeframe | | :--- | :--- | :--- | | Application for Patent (Up to 40 pages) | Form P-1 (PKR 6,750 - 15,000) | At National Phase Entry (31 months) | | Excess Page Fee | PKR 150 per page exceeding 40 | At National Phase Entry | | Excess Claim Fee | PKR 300 per claim exceeding 10 | At National Phase Entry | | Request for Substantive Examination | Form P-7 (PKR 10,000 - 25,000) | Within statutory window | | Power of Attorney Filing | Form P-28 (PKR 1,500) | Within 2 months of filing | | Late Document Submission Extension | Form P-4 / Extension petition | Within statutory grace period | | Annual Maintenance (Annuity) - Year 4 | Renewal Fee (PKR 4,500) | Due before end of 3rd year | | Annual Maintenance (Annuity) - Year 10 | Renewal Fee (PKR 12,000) | Due before end of 9th year | --- Responding to Official Examination Reports (OER / FER) Following substantive examination by the technical examiner at the Patent Office: Issuance of First Examination Report (FER): The examiner issues an official report raising formal objections (lack of novelty, obviousness over cited prior art, ambiguous claim wording, or non-patentable subject matter under Section 10). Statutory Response Window: The applicant has 12 months from the date of the FER to satisfy all objections and place the application in order for acceptance. Drafting Claim Amendments: Working with a registered Pakistani Patent Attorney, the applicant can amend claims, file comparative technical declarations, and present persuasive legal arguments demonstrating non-obvious inventive steps over cited global citations. Pre-Grant Opposition Window: Upon acceptance, the application is advertised in the official Patent Gazette. Third parties have 4 months to file an opposition under Section 23 on grounds of prior public knowledge, wrongful obtaining, or insufficient disclosure.