IP Intelligence › Myths › India gives you twelve months after you publish to file.
Patent myth
“India gives you twelve months after you publish to file.”
India has no general grace period. Sections 29 to 32 exclude only specific, narrow situations from anticipation, and the twelve-month limb in section 31 applies to gazette-notified exhibitions and papers read before a learned society.
The twelve-month idea comes from the United States, whose grace period is general. India is not the same. Section 31 covers display or use at an industrial or other exhibition to which the Central Government has extended section 31 by notification, publication resulting from that display, and a paper read by the true and first inventor before a learned society or published in its transactions - with the twelve months running from the opening of the exhibition or the reading or publication of the paper. Since 2024 the period is claimed on Form 31 under rule 29A.
An ordinary trade fair, a journal article, a product launch or a website page is simply a public disclosure - and prior art against your own application.
Sources & further reading
- The Patents Act, 1970 (consolidated to 1 August 2024) — Official IP India text
- The Patents Rules, 2003, as amended (e-version updated to 15 March 2024) — Official IP India text
- The Patents (Amendment) Rules, 2024 - G.S.R. 211(E), 15 March 2024 — Gazette text via WIPO Lex
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Educational guidance, not legal advice. This material is published by Ragulika IP for general education and information. It is not legal advice, it does not create a professional-client relationship, and it is not a substitute for advice on your own facts. Patentability, infringement, prosecution strategy and every other IP outcome turn on the specific facts and on the law and Patent Office practice as they stand at the time you act. Please take professional advice before making a decision, and read the underlying provision or judgment before relying on any point stated here.
Last reviewed by Ragulika IP on 2026-08-23. Indian patent law and Patent Office practice change; check the position before you rely on it.