India is an important market for international businesses seeking patent protection. However, filing a patent in India requires more than submitting an application prepared for another country. Indian patent law has specific procedural requirements, patentability standards, and disclosure obligations. Foreign applicants who overlook these requirements may face unnecessary delays, additional costs, or difficulties during prosecution. Here are five common mistakes foreign applicants should avoid when filing patents in India.
1. Missing the National Phase Entry Deadline
Foreign applicants filing through the Patent Cooperation Treaty (PCT) must enter the Indian national phase within the prescribed period. Generally, the deadline is 31 months from the priority date under Rule 20(4)(i) of the Patents Rules, 2003. A PCT application does not automatically grant patent protection in India. Applicants must complete the national phase entry requirements, submit the necessary documents, and pay the prescribed fees within the deadline. Applicants should also ensure that the required English translations are available where applicable. Missing the national phase deadline can seriously affect the applicant’s ability to obtain patent protection in India.
2. Overlooking Indian Filing Formalities
Foreign applicants often assume that filing requirements remain the same across jurisdictions. However, India requires a compliant address for service, prescribed forms, and appropriate authorisation where a patent agent is appointed. Under Rule 5, applicants must furnish an address for service that includes a postal address in India and an email address. Where a patent agent is appointed, the authorisation must be submitted in accordance with Rule 135. Applicants should also verify that the entity filing the application has the right to apply for the patent, particularly where inventors are employees or ownership has been transferred through an assignment. Proper documentation helps avoid procedural complications during prosecution.
3. Assuming Foreign Patent Claims Are Automatically Patentable in India
Patentability requirements differ across countries. An invention accepted in another jurisdiction may face objections in India under Section 3 of the Patents Act, 1970. For example, Section 3(d) addresses certain new forms of known substances, while Section 3(k) excludes mathematical methods, business methods, computer programmes per se, and algorithms. Applicants must also establish novelty, inventive step, and industrial applicability under Indian law. A patentability search helps identify relevant prior art and assess whether an invention satisfies Indian patentability requirements before filing.
4. Ignoring Foreign Application Disclosure Requirements
Section 8 requires applicants to provide prescribed information and undertakings concerning corresponding foreign patent applications. The initial Form 3 must generally be filed within six months from the Indian application filing date under Rule 12(1A). Applicants must also provide subsequent information within the applicable prescribed period. Foreign applicants should coordinate with their international patent representatives to ensure that corresponding application details are accurately reported.
5. Missing the Request for Examination Deadline
India follows a request-based examination system. Filing a patent application does not automatically initiate examination. Applicants must submit Form 18 within the applicable deadline under Rule 24B. For applications filed on or after 15 March 2024, the prescribed period is generally 31 months from the priority date, if applicable, or the filing date, whichever is earlier. Missing the examination deadline results in the application being treated as withdrawn under Section 11B(4).
Foreign applicants should carefully review Indian filing requirements before pursuing patent protection. Managing national phase deadlines, preparing appropriate documentation, assessing patentability, complying with Section 8, and requesting examination within the prescribed period helps prevent avoidable prosecution complications.
ORIGIIN IP Solutions LLP assists businesses and international applicants with patent searches and analytics, patent filing, and prosecution strategies.
Frequently Asked Questions
1. What is the deadline for entering the Indian national phase?
Generally, 31 months from the priority date under Rule 20(4)(i).
2. Does India automatically examine patent applications?
No. Applicants must file Form 18 within the applicable examination deadline.
3. Is an Indian address for service required?
Yes. Rule 5 requires a compliant address for service, including an Indian postal address and email address.
4. What is Form 3?
Form 3 provides information and undertakings concerning corresponding foreign applications under Section 8.
5. Does Section 39 apply to foreign applicants filing patents in India?
Generally, no. Section 39 primarily regulates persons resident in India who seek to file patent applications outside India.
