A Pune-based medical devices startup held a patent on a diagnostic device that had taken four years and significant investment to develop. The patent was granted in 2019. In 2023, under the pressure of fundraising and scaling operations, the IP renewal calendar slipped. Nobody noticed that the Year 4 renewal fee due before the expiration of the third year from filing had not been paid. By the time the oversight was discovered, the six-month grace period had also passed. The patent had lapsed. A competitor, monitoring public IPO records, noticed the lapse and began manufacturing a near-identical device.
This is not an unusual scenario. The Indian Patent Office processes hundreds of thousands of applications annually and maintains no obligation to send renewal reminders. Patent maintenance unlike trademark renewal, which at least generates a registry record is entirely the patentee’s responsibility, governed by strict deadlines that do not pause for missed communications or internal oversight.
This guide covers everything an Indian patent holder needs to know about maintaining a granted patent: when renewal fees are due, how much they cost by applicant category, how to pay them, what happens during the grace period, how to restore a lapsed patent under Section 60 of the Patents Act, 1970, and how to structure patent portfolio management so that renewals never slip.
The governing framework: Patent renewal in India is governed by the Patents Act, 1970 and the Patents Rules, 2003 (as amended). Renewal fees are paid using Form 4 the prescribed form for payment of renewal fees filed with the Indian Patent Office. The IPO operates four regional offices in Mumbai, Delhi, Kolkata, and Chennai, with the central filing portal at ipindia.gov.in.
Why Patent Renewal Is Non-Negotiable
What happens if a patent is not renewed?
An Indian patent is granted for a term of twenty years from the date of filing of the patent application. That exclusivity the legal right to prevent any other person from making, using, offering for sale, selling, or importing the patented invention in India exists only for as long as the renewal fees are paid. Miss the deadline without paying within the grace period, and the patent lapses. A lapsed patent enters the public domain: the invention becomes freely available for anyone to use commercially, without any obligation to the patent holder.
For most innovators and businesses, a patent is not just a legal certificate it is the foundation of licensing revenue, investor valuation, competitive exclusivity, and market positioning. Indian pharmaceutical companies with active patent portfolios including Cipla, Dr. Reddy’s Laboratories, and Sun Pharma maintain dedicated IP renewal teams precisely because a single lapsed patent on a high-value molecule can cost crores in lost licensing income and market exclusivity.
The discipline of renewal is also commercially strategic. A patentee assessing a portfolio of ten patents who decides to stop renewing three because those inventions are no longer being commercialised is making a rational business decision and freeing up renewal budget for patents that are still generating value. But that decision should be made deliberately, not by default.
Key Takeaway: A granted patent provides twenty years of exclusivity but only if renewal fees are paid annually from Year 3. The IPO sends no reminders. The patentee is solely responsible for tracking and paying fees on time. [INTERNAL LINK: Patent Registration Services Unimarks Legal Solutions]
When Renewal Fees Are Due: Getting the Timing Right
What is the exact schedule for patent renewal payments in India?
This is the point where many patent holders and some advisors get confused. The correct framing of the renewal timeline is essential.
The first renewal fee is due before the expiration of the second year from the date of filing that is, it must be paid to keep the patent alive as it enters its third year. If a patent was filed on 15 April 2020, the first renewal fee is due before 15 April 2022 (the end of the second year). This keeps the patent in force through the third year.
Thereafter, fees are due annually before each year’s expiration. The Year 4 fee is due before the end of the third year from filing. The Year 5 fee before the end of the fourth year. And so on, through to the Year 20 fee due before the end of the nineteenth year from filing.
The consequence of this forward-looking structure is that you are always paying for the year ahead. A patent holder who files on 1 January 2020 must pay the Year 3 renewal before 1 January 2022. If they pay on 15 January 2022 fifteen days late they are already in the grace period. If they miss the grace period entirely, the patent lapses as of the expiry of the second year.
The IPO does not send renewal reminders. There is no automated notification system, no email alert, and no reminder letter from the Patent Office when a renewal is approaching. Unlike some jurisdictions (the EPO, for example, sends payment reminders), the Indian Patent Office places the entire tracking responsibility on the patentee. A docket management system either maintained by the patent holder or by a registered patent agent is not optional for any serious patent portfolio.
The Complete Patent Renewal Fee Table Form 4
How much does patent renewal cost in India by year and by applicant category?
The Patents Rules prescribe different renewal fee schedules depending on the category of applicant. The four categories are:
Natural Person an individual inventor filing in their personal capacity.
Startup a recognised startup as defined under the DPIIT Startup India scheme, eligible for the concessional fee rate.
Small Entity (MSME) an enterprise that qualifies as a Micro, Small or Medium Enterprise under the MSME Development Act, 2006.
Others (Large Entity) all companies, institutions, and organisations that do not fall into the Natural Person, Startup, or Small Entity categories.
The following fee table reflects the current structure under the Patents (Amendment) Rules. Always verify the exact current fees at ipindia.gov.in before making any payment fees are periodically revised through Patent Rules amendments and the figures below, while accurate to the general structure, should be confirmed against the official IPO fee schedule at the time of payment.
| Renewal Year | Natural Person (₹) | Startup / Small Entity (₹) | Others / Large Entity (₹) |
| 3rd year | 800 | 800 | 4,000 |
| 4th year | 800 | 800 | 4,000 |
| 5th year | 800 | 800 | 4,000 |
| 6th year | 800 | 800 | 4,000 |
| 7th year | 1,600 | 1,600 | 8,000 |
| 8th year | 1,600 | 1,600 | 8,000 |
| 9th year | 1,600 | 1,600 | 8,000 |
| 10th year | 1,600 | 1,600 | 8,000 |
| 11th year | 2,400 | 2,400 | 12,000 |
| 12th year | 2,400 | 2,400 | 12,000 |
| 13th year | 2,400 | 2,400 | 12,000 |
| 14th year | 2,400 | 2,400 | 12,000 |
| 15th year | 2,400 | 2,400 | 12,000 |
| 16th year | 4,800 | 4,800 | 24,000 |
| 17th year | 4,800 | 4,800 | 24,000 |
| 18th year | 4,800 | 4,800 | 24,000 |
| 19th year | 4,800 | 4,800 | 24,000 |
| 20th year | 4,800 | 4,800 | 24,000 |
Total renewal cost over the full 20-year term:
- Natural Person / Startup / Small Entity: ₹800×4 + ₹1,600×4 + ₹2,400×5 + ₹4,800×5 = ₹3,200 + ₹6,400 + ₹12,000 + ₹24,000 = ₹45,600
- Large Entity: ₹4,000×4 + ₹8,000×4 + ₹12,000×5 + ₹24,000×5 = ₹16,000 + ₹32,000 + ₹60,000 + ₹120,000 = ₹2,28,000
These are the base renewal fees only. Late payments during the grace period attract an additional surcharge. Professional fees for patent agent services are charged separately.
Key Takeaway: Patent renewal fees in India increase in bands across the twenty-year term. Natural persons, startups, and MSMEs pay substantially lower fees than large entities a deliberate policy choice to support individual inventors and smaller innovators. Verify current fees at ipindia.gov.in before every payment.
How to File the Renewal: Step-by-Step
What is the process for paying patent renewal fees in India?
Step 1 Identify the renewal due date. The due date is calculated from the filing date of the original patent application not the grant date. The patent grant certificate and the IPO’s online database (at ipindia.gov.in) both show the filing date. Calculate each annual due date forward from that date.
Step 2 Confirm your applicant category. The fee you pay depends on whether you qualify as a Natural Person, Startup, Small Entity (MSME), or Large Entity at the time of each renewal payment. If your organisation’s status changes (for example, if a startup grows beyond MSME thresholds), update your renewal fee category accordingly.
Step 3 Prepare Form 4. Form 4 is the official form for payment of patent renewal fees. It is available on the IPO’s e-filing portal at ipindiaonline.gov.in. The form requires: the patent number, the patent holder’s name and address, the year(s) of renewal being paid, and the fee calculation.
Step 4 Submit and pay. Renewal fees may be paid electronically through the IPO’s e-filing system the preferred and faster method or by demand draft at the designated patent office. E-payments generate an immediate acknowledgment. Retain proof of payment for your records.
Step 5 Confirm receipt. After payment, verify that the renewal is recorded against your patent in the IPO’s public database. If the status is not updated within two to three weeks of payment, follow up with the relevant patent office.
The Grace Period: Six Months With a Surcharge
What happens if a renewal deadline is missed?
The Patents Act provides a six-month grace period after the annual renewal deadline. During this period, the renewal fee may still be paid but with an additional surcharge prescribed under the Patents Rules.
The grace period is a safety net, not a planned strategy. Relying on it routinely means paying a surcharge on every annual renewal, which adds up significantly across a twenty-year portfolio. More importantly, while the patent is technically in force during the grace period, its enforceability is in a grey zone a patent holder who has missed the deadline but is within the grace period should exercise caution before initiating infringement proceedings.
If the grace period expires without payment, the patent lapses immediately. From the moment of lapse, the invention enters the public domain and competitors may legally begin commercialising it.
Restoring a Lapsed Patent: Section 60 Restoration Step-by-Step
Can a lapsed patent be restored in India, and what is the process?
Yes – under Section 60 of the Patents Act, 1970, a patent that has lapsed due to non-payment of renewal fees may be restored, provided the patentee acts within the prescribed window and satisfies the Controller that the failure to pay was unintentional.
The restoration process under Section 60 involves six distinct steps:
Step 1: File Form 15 (Petition for Restoration) with the Controller of Patents within 18 months of the date of lapse. This is the critical outer deadline. A petition for restoration filed after 18 months from the date of lapse will not be entertained. The petition must be filed at the appropriate regional patent office.
Step 2: Submit a statement explaining why the failure to pay was unintentional. The Controller does not restore patents automatically the patentee must establish that the lapse was a genuine oversight rather than a deliberate decision to abandon the patent. The statement should set out the specific circumstances: internal administrative failure, medical emergency, oversight in portfolio management systems, or other credible explanation. Supporting evidence (correspondence records, medical certificates, organisational restructuring documentation) strengthens the petition.
Step 3: Pay the outstanding renewal fee plus the prescribed restoration fee. Both amounts must be paid at the time of filing the Form 15 petition. A petition submitted without the required fees will not be processed.
Step 4: The Controller examines whether the lapse was truly unintentional. Third parties who have begun commercial exploitation of the invention during the lapse period may file a notice opposing the restoration. The Controller will consider these oppositions before deciding whether to grant restoration. This is a significant risk for patentees who have allowed commercially valuable patents to lapse a competitor who began manufacturing during the lapse period will vigorously oppose restoration, and the Controller must weigh the rights of both parties.
Step 5: If restoration is granted, it is advertised in the Official Journal of the Patent Office. This gives any interested third party a further window to oppose the restoration order. Advertisement in the Journal also restores the public record of the patent’s active status.
Step 6: Once restored, the patent holder regains full enforcement rights prospectively. Importantly, restoration does not retroactively create liability for acts of infringement that occurred during the lapse period. A competitor who manufactured the patented product between the date of lapse and the date of restoration is not automatically liable for those acts the restoration is effective from the date of the Controller’s order, not from the date of lapse.
The practical lesson: Section 60 restoration is a last resort, not a planned fallback. The evidentiary burden of establishing unintentional lapse is real, the 18-month window can pass quickly, and third-party opposition from competitors who have begun exploiting the lapsed invention is a genuine risk. Prevention through systematic docket management is the only reliable strategy.
Form 27: The Patent Working Obligation
What is the Form 27 filing requirement and why does it matter for patent holders?
Section 146 of the Patents Act, 1970 requires every patentee (and every licensee of a patent) to submit Form 27 annually to the Indian Patent Office, reporting the extent to which the patented invention has been worked in India during the preceding year.
Form 27 must be filed by 31 March each year, covering the commercial use of the patent during the previous calendar year. The information required includes whether the patent has been worked in India, the quantity and value of the patented product manufactured or imported, any licences granted, and the reason for non-working if the patent has not been commercially exploited.
Failure to file Form 27 carries significant consequences. Under Section 146(3), non-filing or false filing is punishable with a fine of up to ₹10 lakh. Beyond the penalty, non-working is a ground for compulsory licensing under Section 84 of the Patents Act a third party may apply to the Controller for a compulsory licence to work the invention if the patentee is not doing so at a reasonable price and in adequate quantities to meet the public’s reasonable requirements.
Form 27 is filed separately from the renewal fee payment and through a different form on the IPO portal. Managing both obligations annual renewal fees and annual Form 27 submissions is part of the total cost and administrative burden of maintaining a granted patent.
Building a Patent Renewal Calendar: Best Practices
How should Indian businesses and inventors track patent renewal deadlines?
Maintain a dedicated IP docket. Every granted patent should have a docket entry recording: the patent number, the filing date, the grant date, the annual renewal due dates for Years 3 through 20, the applicant category, and the responsible person or agent for each payment.
Set multiple calendar reminders per deadline. Set the first reminder 90 days before each annual due date, the second at 30 days, and the final at 7 days. For any patent of significant commercial value, engage a registered patent agent with a professional docket management system as a backup.
Budget renewal costs at the portfolio level. A portfolio of ten patents across the full twenty-year term represents a significant cumulative renewal cost. Prioritise patents by commercial relevance annually patents covering active products, licensing arrangements, or competitive moat should receive the highest maintenance priority. Patents covering obsolete technology or products no longer in the market may be candidates for strategic abandonment.
Evaluate commercial relevance at each renewal. The decision to renew is an annual commercial decision, not just an administrative one. At each renewal point, assess: Is this patent still protecting a revenue-generating product? Is it part of an active licensing arrangement? Does its expiry significantly weaken competitive positioning? If the answer to all three is no, non-renewal may be the right business decision made deliberately, not by default.
Conclusion: Renewal Is a Discipline, Not an Afterthought
A granted patent is one of the most powerful commercial assets an Indian innovator can hold. The twenty-year exclusivity it provides the right to prevent competitors from using, manufacturing, or selling the patented invention is the foundation of licensing deals, investor confidence, and market leadership.
That exclusivity exists only for as long as the renewal fees are paid, Form 27 is filed, and the administrative obligations of the Patents Act are met. The IPO will not remind you. The patent office will not chase you. When a patent lapses, it lapses quietly and irreversibly unless the Section 60 restoration window is caught and acted upon promptly.
At Unimarks Legal Solutions, we maintain patent portfolios for inventors, startups, MSMEs, and established companies across India tracking annual renewal deadlines, managing Form 27 filings, responding to compulsory licensing threats, and advising on portfolio prioritisation decisions. If your patent portfolio is growing and renewal management is becoming complex, contact our team for a portfolio audit.
Keep your patent alive and your exclusivity intact → Patent Registration and Advisory Unimarks Legal Solutions
About the Author
Advocate Suresh Kumar has a law practice specialising in Intellectual Property Rights, Commercial legal advisory, debt recovery, commercial litigation, and dispute resolution for domestic and international clients. He is enrolled with the Bar Council of Tamil Nadu and Puducherry and represents clients before all courts and forums in Chennai, Tamil Nadu. This article reflects his understanding of the current legal position and is intended solely for informational purposes.
Disclaimer
This article is published by Unimarks Legal for informational purposes only. It is not intended to constitute legal advice or to create an attorney-client relationship. The contents are based on Indian law as applicable at the time of writing and are subject to change. Readers should not act upon the information in this article without seeking independent legal counsel. Every legal situation is unique, and the application of law depends on specific facts and circumstances. Past results do not guarantee future outcomes. This publication is made in compliance with the Bar Council of India Rules, which prohibit advertising or solicitation by advocates. Any information received through this article should not be construed as legal advice.
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