International Patent Filing – Complete Guide

What is International Patent Filing?

International Patent Filing refers to the process by which an inventor or applicant seeks patent protection for an invention in countries outside their home jurisdiction. Since a patent granted in one country is territorial in nature and does not automatically extend protection abroad, applicants who wish to protect their invention in multiple countries must file separate applications, most commonly through the Patent Cooperation Treaty (PCT) route administered by the World Intellectual Property Organization (WIPO), or through the Paris Convention route by filing individual applications directly in each country of interest.

Why is International Patent Filing Important?

International Patent Filing helps to:

·         Secure exclusive rights over an invention in key global markets.

·         Prevent competitors from manufacturing, using, or selling the invention abroad without authorisation.

·         Enhance the commercial and licensing value of the invention internationally.

·         Provide a unified filing mechanism to seek protection in multiple countries simultaneously.

·         Strengthen a business’s global competitiveness and investment potential.

Who Needs International Patent Filing?

Any inventor, start-up, research institution, or business that intends to manufacture, sell, license, or export a patented product or process outside India should consider international patent filing. This is particularly relevant for entities in technology, pharmaceuticals, engineering, biotechnology, and manufacturing sectors that operate or plan to operate in global markets.

Routes for International Patent Filing

1. The PCT (Patent Cooperation Treaty) Route

The PCT route allows an applicant to file a single international application, which is recognised by all PCT contracting states (over 150 countries). It does not result in a single “global patent,” but simplifies and defers the process of seeking protection in multiple jurisdictions through one standardised application and a unified international search and examination stage.

2. The Paris Convention Route

Under the Paris Convention, an applicant who has filed a patent application in one member country can file corresponding applications in other member countries within 12 months, claiming priority from the first filing date. This route requires filing separate applications directly in each country of interest.

Eligibility Criteria

·         The invention must be novel, involve an inventive step, and be capable of industrial application.

·         The invention must not fall under any exclusions provided under the applicable patent laws (such as the Indian Patents Act, 1970).

·         For PCT filing from India, the applicant must ordinarily first file a patent application in India (or seek a foreign filing permit) before filing internationally, in view of national security-related filing restrictions.

·         The applicant must be an entity or individual entitled to apply, either as the inventor, assignee, or legal representative.

Benefits of International Patent Filing

·         Extends patent protection across multiple jurisdictions through a streamlined process.

·         Provides additional time (up to 30/31 months from the priority date, under the PCT route) to decide in which countries to pursue protection.

·         Strengthens the applicant’s position for licensing, joint ventures, and foreign investment.

·         Enables a single international search and examination report to guide filing strategy in multiple countries.

·         Deters international infringement and unauthorised commercial exploitation of the invention.

Documents Required

·         Complete specification of the invention (description, claims, abstract, and drawings)

·         Priority document, i.e., certified copy of the first-filed application (if claiming priority)

·         Applicant and inventor details, including identity and address proof

·         Assignment deed (if the applicant is not the inventor)

·         Power of Attorney / authorisation for filing through an agent or attorney

·         Foreign Filing Permit or National Security Clearance (mandatory for Indian applicants filing abroad first)

·         Details of the countries/jurisdictions where protection is sought

International Patent Filing Process (PCT Route)

Step 1: File a Priority Application

File a patent application in the home country (such as India) to establish a priority date, or obtain a foreign filing permit before filing abroad.

Step 2: File the PCT International Application

File the PCT application within 12 months of the priority date, either through the national patent office (acting as Receiving Office) or directly with WIPO.

Step 3: International Search

An International Searching Authority conducts a prior-art search and issues an International Search Report along with a Written Opinion on patentability.

Step 4: International Publication

The PCT application is published by WIPO, typically 18 months from the priority date.

Step 5: Optional International Preliminary Examination

The applicant may request an International Preliminary Examination to obtain a more detailed opinion on patentability before entering national phases.

Step 6: National Phase Entry

Within 30/31 months from the priority date, the applicant must enter the “national phase” by filing the application, translations, and fees in each country where protection is sought.

Step 7: Examination and Grant in Each Country

Each national/regional patent office independently examines the application as per its domestic laws before granting the patent.

Compliance for Applicants

·         Obtain a Foreign Filing Permit before filing abroad, if the invention originates in India and the Indian application has not yet been filed or 6 weeks have not lapsed.

·         Adhere to national phase entry deadlines in each designated country to avoid loss of rights.

·         Maintain and pay renewal/annuity fees in each jurisdiction where the patent is granted.

·         Respond to office actions and examination reports raised by individual national patent offices.

·         Monitor the patent portfolio for infringement across jurisdictions.

Filing Fees

Fees for international patent filing include the international filing fee, search fee, and transmittal fee under the PCT system, along with separate national phase fees, attorney fees, and translation costs payable in each designated country. These fees vary based on the applicant’s entity status (natural person, small entity, or large entity) and the number of countries selected. Applicants should verify the latest fee schedule with WIPO and each national patent office before filing.

Why Choose My Online Vakeel?

My Online Vakeel offers complete assistance for International Patent Filing, including PCT and Paris Convention applications. Our experts help inventors and businesses with patentability assessments, drafting and filing applications, obtaining foreign filing permits, managing national phase entries, and coordinating with foreign associates, ensuring a smooth and strategically sound path to global patent protection.