Patent Application is the formal request filed with the Indian Patent Office by an inventor or applicant seeking the grant of a patent for an invention, accompanied by a specification (provisional or complete) that describes the invention and its claims. Under Indian law, the filing procedure for patent applications is governed by Section 7 of the Patents Act, 1970, and the application can be filed at any of the four Patent Office locations — Delhi, Mumbai, Chennai, or Kolkata.
Legal definition
The Patents Act, 1970 prescribes the requirements for filing a patent application:
Section 7(1): Every application for a patent shall be for one invention only and shall be made in the prescribed form and filed in the patent office.
Section 7(1A): Every such application (not being a convention application or an application filed under the Patent Cooperation Treaty designating India) shall be accompanied by a provisional or a complete specification.
The Act recognises several types of patent applications:
- Ordinary application (Section 7): Filed directly at the Indian Patent Office with a provisional or complete specification
- Convention application (Section 135): Filed by a person who has already filed an application in a convention country (Paris Convention member), claiming priority of the earlier filing date
- PCT national phase application (Section 7(1B)): Filed as the Indian national phase entry of an international application filed under the Patent Cooperation Treaty
- Patent of addition (Section 54): Filed for an improvement or modification of an already patented invention
A provisional specification secures the priority date and provides 12 months to file the complete specification. A complete specification must fully and particularly describe the invention and its operation, disclose the best method of performing it, and end with claims defining the scope of the invention.
How courts have interpreted this term
Novartis AG v. Union of India [(2013) 6 SCC 1]
While this landmark case primarily addressed the patentability threshold under Section 3(d), it also addressed the substantive requirements that a patent application must satisfy. The Supreme Court held that the complete specification must demonstrate not merely a new form of a known substance but "enhanced efficacy" in the case of pharmaceutical inventions. This decision established that the quality of the specification — particularly the evidence of efficacy — is determinative of the application's fate.
Enercon (India) Ltd. v. Aloys Wobben [(2014) 15 SCC 353]
The Supreme Court held that patent applications must be interpreted in the context of the claims made in the complete specification, and the claims define the boundaries of the monopoly sought. Vague or overbroad claims will not be sustained. The Court emphasised that the patent specification is a public document and must be read by a person skilled in the art with reasonable effort and competence.
F. Hoffmann-La Roche Ltd. v. Cipla Ltd. [2016 (65) PTC 1 (Del)]
The Delhi High Court (followed in Supreme Court proceedings) held that the patent application process includes pre-grant opposition under Section 25(1), which allows any person to oppose the grant of a patent before it is sealed. This provides a safeguard against the grant of invalid patents and is a distinctive feature of the Indian patent system.
Why this matters
The patent application is the first and most critical step in securing patent protection in India. The specification filed with the application defines the scope of the monopoly that will be granted, and any deficiency in the specification — inadequate disclosure, overbroad claims, or failure to meet the patentability criteria of novelty, inventive step, and industrial applicability — can result in rejection, opposition, or subsequent revocation.
For inventors and businesses, the choice between filing a provisional specification (to secure an early priority date) and a complete specification (to begin the examination process immediately) is a strategic decision that depends on the stage of development of the invention and competitive considerations. The 12-month window between provisional and complete filing allows inventors to refine the invention and assess its commercial potential before committing to the full prosecution process.
For patent practitioners, the Indian application process has distinctive features that differentiate it from other major jurisdictions: the mandatory pre-grant opposition mechanism under Section 25(1), the requirement to disclose information about corresponding foreign applications under Section 8, the stringent Section 3(d) threshold for pharmaceutical patents, and the controller's power to require local working statements under Section 146.
Related terms
Parent concept:
Related IP processes:
Frequently asked questions
What is the difference between a provisional and complete specification?
A provisional specification is a preliminary description of the invention that secures the priority date. It does not need to include claims. The applicant must file a complete specification within 12 months, which must fully describe the invention, disclose the best method of performing it, and include claims defining the scope of protection sought. If the complete specification is not filed within 12 months, the application is deemed to be abandoned.
How long does it take to get a patent in India?
The average time from application to grant in India is approximately 4-5 years, though this varies depending on the technology area and complexity of the examination. Expedited examination is available for startups, small entities, female applicants, and applicants who have chosen India as the International Searching Authority under PCT.
How much does a patent application cost in India?
Official fees depend on the applicant category. For natural persons and startups, the application fee is Rs 1,600 (e-filing), the examination request fee is Rs 4,000, and annual renewal fees start at Rs 800 per year. For small entities, fees are approximately double, and for other entities (large corporations), fees are five to ten times higher.
This entry is part of the Veritect Indian Legal Glossary, a comprehensive reference of Indian legal terminology grounded in statutory text and judicial interpretation.
Last updated: 2026-03-27. Veritect provides this content for informational purposes and does not constitute legal advice.