Patent Filing Process in India: Application, Examination & Grant

Patent Filing Process in India

Patent filing in India requires an appropriate disclosure, procedural documentation and attention to statutory timelines. Inventors should coordinate the draft specification, claim strategy, applicant information and any priority claims before filing. Later examination, publication and responses are separate steps governed by the applicable law and current patent-office procedures.

Who can file a patent application in India?

Section 6 of the Patents Act permits an application to be made by the person claiming to be the true and first inventor, an assignee of that person, or the legal representative of a deceased person who was entitled to apply. Applications may be filed by one or more eligible persons. Section 7 requires each patent application to be for one invention and to identify the true and first inventor, while also addressing the applicant's right where the applicant is an assignee.

Should the first filing be provisional or complete?

An Indian application may be accompanied by a provisional or complete specification, subject to the statutory filing route. Where a provisional specification is filed, Section 9 generally requires the complete specification to be filed within 12 months. If the complete specification is not filed within that period, the application is deemed abandoned. A provisional filing should therefore be used only when the disclosure is technically sufficient to support the priority position that the applicant expects to rely upon later.

Section 10 requires a specification to describe the invention, and a complete specification must contain clear and succinct claims fairly based on the disclosed matter. That makes the quality of the initial technical disclosure important. A weak provisional filing can create priority and support problems that are difficult to repair when the complete specification or foreign filings are prepared.

When is an Indian patent application published?

Rule 24 provides that an application is ordinarily not open to the public for 18 months from the filing date or priority date, whichever is earlier. Publication normally follows within one month after expiry of that period. An applicant can request earlier publication under Rule 24A. Publication is not the same as grant, but it is a significant procedural milestone because the application becomes publicly accessible subject to the statutory exceptions.

When must examination be requested?

An application is not substantively examined merely because it has been filed or published. Section 12 provides that, after a valid request for examination, the Controller refers the application, specification and related documents to an examiner for review of statutory compliance, grounds of objection and the search/investigation required under the Act.

What happens after the request for examination?

Rule 24B sets the administrative sequence for examination. The examiner reports to the Controller, and the Controller issues the first statement of objections after processing the examiner's report. The applicant then responds to the objections and, where necessary, amends the application within the limits of the Act. The current Rule 24B gives six months from the first statement of objections to put the application in order for grant, with a possible further three-month extension on a timely Form 4 request and prescribed fee.

This stage should be treated as substantive patent prosecution. Objections can concern novelty, inventive step, excluded subject matter, clarity, support, unity, formal requirements or other statutory issues. The strongest response strategy is usually built from the application as filed, because later amendment cannot be used to introduce unsupported subject matter.

Who can request expedited examination?

Rule 24C provides expedited examination for specified categories. These include, among others, cases where India was selected as the competent International Searching Authority or International Preliminary Examining Authority, startups, small entities, certain natural-person applicants including female applicants, and specified government-related applicants. Eligibility should be checked against the current rule rather than assumed from business size or applicant preference alone.

What is the role of prior-art searching before filing?

How does international filing connect with the India process?

An Indian applicant may later pursue foreign protection through direct convention filings or the PCT route, subject to the applicable foreign-filing and secrecy rules. Conversely, a PCT application designating India can enter the Indian national phase. For PCT national-phase applications designating India, Section 53 states that the 20-year patent term runs from the international filing date accorded under the PCT. (Official reference: Rule 24)

The International Patent Filing master guide explains the international route. The PCT National Phase Filing Procedure in India explains the current 31-month India entry position, while the Patent Cooperation Treaty guide explains the international-phase structure.

How long does an Indian patent last?

Section 53 provides a 20-year patent term from the filing date for patents granted under the Act. For PCT international applications designating India, the term is 20 years from the international filing date. Renewal fees are used to keep a granted patent in force during its statutory term. (Official reference: Section 9)

Practical India patent filing checklist

• Identify the true and first inventor and confirm applicant ownership or assignment rights.
• Record the invention before public disclosure where possible and collect supporting technical material.
• Decide whether the first filing should be provisional or complete.
• If filing provisionally, calendar the 12-month complete-specification deadline.
• Draft the complete specification with claims supported by the disclosure.
• Review known prior art and patentability risks before finalizing claim scope.
• File the application through the appropriate Indian Patent Office route and preserve the official filing record.
• Track the normal 18-month publication point or consider early publication where commercially useful.
• Calculate the request-for-examination deadline under the current or transitional Rule 24B regime.
• Prepare for substantive examination, FER response and any required amendment or hearing.
• After grant, track renewal-fee obligations throughout the remaining patent term.

Primary official sources

Use the Indian Patent Office's current Section 9 for provisional and complete specifications, Section 10 for specification requirements, Rule 24 for publication, Rule 24B for examination, Rule 24C for expedited examination, and Section 53 for patent term. (Official reference: Section 10.)

Related PatentBusinessLawyer.com pages

This India filing-process page connects the drafting and international-filing clusters. Related pages include What Is Patent Drafting?, Provisional Patent Application, International Patent Filing in India, PCT National Phase Filing Procedure in India, and Patent Prosecution in India.