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Patent criticality
The patent died of neglect
How do granted patents just disappear?
Renewal fees are due from the expiration of the second year from the date of the patent, and each year after. Miss them and the patent ceases to have effect - usually without anyone noticing until a competitor does.
How lapses happen
An address on the register goes stale after an office move. An agent relationship ends and nobody takes over the docket. A patent granted several years after filing has multiple years of accrued renewals falling due almost immediately, and the accrual is missed.
None of these are dramatic. All of them are common.
What can be done afterwards
There is a six-month extension available on request with fee. Beyond that, restoration is possible but must be applied for within eighteen months from the date the patent ceased to have effect, supported by a verified statement setting out fully the circumstances of the failure - and the Controller has to be satisfied it was unintentional. Third parties who started working the invention during the lapse may retain protections even if restoration succeeds.
Where grant came more than two years after filing, there is a specific provision allowing accrued renewals to be paid within a period after the patent is recorded in the register - but again, only if someone acts.
Sections 53, 60, 61, 62 and 142(4) of the Patents Act 1970; rule 80 including rule 80(1A) of the Patents Rules 2003.
Keep the address for service current and review the whole portfolio for renewal dates at least twice a year.
Assuming an annuity provider or former agent is still watching a case they no longer bill for.
Recently granted patents with accrued renewals, and patents transferred as part of an acquisition.
Ask for a renewal schedule for every granted patent you own, with the next due date against each.
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
Related
Renewal fee
A fee payable to keep a patent in force, due from the expiration of the second year from the date of the patent and each year after that, payable before the year exp…
Restoration
An application to bring back a patent that ceased for non-payment of renewal fees, which must be made within eighteen months from the date the patent ceased to have …
After grant: the things that quietly kill patents
Very few Indian patents are lost to competitors. They are lost to handovers, stale addresses and obligations nobody owns.
Not sure whether this applies to your invention?
The honest answer usually needs someone to look at your actual disclosure, your timeline and the prior art. That is a conversation, not an article.
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.