PCT National Phase Application India
PCT national phase entry into India is a critical step for applicants seeking patent protection in the Indian jurisdiction based on an international patent application filed under the Patent Cooperation Treaty (PCT). The statutory deadline for entering the national phase in India is 31 months from the priority date. This timeline is strictly enforced, and no extension is available if the deadline is missed.
Strategic Context: PCT Route vs. Direct National Filings
When developing a global patent filing strategy, inventors and applicants may either file individual patent applications directly in selected countries or file a PCT international application within 12 months from the priority date.
Direct national filings in multiple jurisdictions during the initial priority year can be resource-intensive and operationally complex, particularly where the underlying technology is still evolving or commercial markets have not yet been clearly identified. In contrast, the PCT system allows applicants to defer country-specific filings and related prosecution costs for up to 30 or 31 months, providing valuable time for strategic assessment.
For startups and MSMEs, this deferred decision-making window can be especially relevant in aligning patent protection with funding cycles, product development, and market validation.
Deadline for PCT National Phase Entry in India
A PCT application must be entered into the Indian national phase within 31 months from the earliest priority date. Failure to meet this deadline results in irreversible loss of patent rights in India, as the Indian Patent Office does not permit extensions or restorations for delayed national phase entry.
Advantages of Filing a PCT International Application
Filing a PCT international application before entering the national phase offers several structural and strategic advantages:
- Jurisdictional Flexibility
Applicants retain the flexibility to select specific PCT contracting states for national phase prosecution based on evolving commercial and legal considerations. - Centralized International Filing
The PCT enables the filing of a single international patent application that has effect across multiple jurisdictions, subject to national or regional grant procedures. - Deferred Costs and Procedural Efficiency
The PCT framework reduces upfront filing and prosecution costs while streamlining administrative effort during the early stages of global patent protection. - Informed Prosecution Strategy
International search and examination reports generated during the PCT phase assist applicants in making informed decisions before engaging with individual national patent offices.
Relevance for Foreign Applicants and Indian Market Entry
For foreign applicants seeking patent protection in India, timely PCT national phase entry into India ensures continuity of rights and compliance with Indian patent law. Given India’s growing role as a key technology, manufacturing, and innovation hub, national phase entry is often an integral component of a broader international IP strategy.

