Patent Annual Renewal —
Keep Your Patent in Force
for the Full 20 Years
A granted patent does not maintain itself. Annual renewal fees must be paid from the end of the second year after filing — every year without exception — to keep the patent alive for its full 20-year term. Miss one payment and the patent lapses. TaxClue tracks every renewal deadline across your entire patent portfolio and pays on time, every time.
Patent Renewal Fees — All 18 Years, All Applicant Categories
Renewal fees are due at the end of each year from Year 2 onwards, calculated from the filing date. Fees increase in blocks — earlier years are cheaper; later years cost significantly more. Startups pay as little as 1/5th of large entity rates.
The IPO does not send renewal reminders — the patentee bears sole responsibility for tracking and paying renewal fees on time. A missed renewal (after the 6-month grace period) causes the patent to lapse — entering the public domain where anyone can freely use the invention.
A Patent You Don't Renew Is a Patent You Don't Own
The IPO will not send you a reminder. One missed renewal fee ends 20 years of exclusive rights — and there is no recovery after 18 months. TaxClue tracks every renewal date, calculates exact fees, and pays on time, every year.
What Happens When a Patent Lapses — and How to Restore It
When a Patent Lapses
Patent ceases to be in force immediately after the grace period expires without payment. The invention enters the public domain — anyone can use it freely. Competitors can begin manufacturing. No notice from IPO.
Restoring a Lapsed Patent — Section 60
Application for restoration must be filed within 18 months of the lapse date. Must show the failure to pay renewal was unintentional. All unpaid renewal fees must be paid. Third parties have 2 months to oppose restoration.
6-Month Grace Period
If you miss the annual renewal deadline, you have a 6-month grace period to pay with a 10% per month surcharge. After 6 months — the patent lapses.
18-Month Restoration Window — Strictly
Restoration is possible within 18 months from the lapse date. After 18 months — restoration becomes permanently impossible and the patent is gone forever.
How TaxClue Handles Your Patent Renewal — 3 Steps
Status Verification
TaxClue verifies the patent number, filing date, current renewal status, and applicable fee category on the IPO portal. Confirms the correct renewal year and fee amount due.
Fee Calculation & Payment
Renewal fee calculated including any applicable grace period surcharge. Form 4 (Request for Extension of Time / Renewal) prepared. Govt. fee paid on the IPO e-filing portal.
Receipt & Reminder Set
Renewal receipt from IPO obtained and shared with client. TaxClue sets the next year's renewal reminder automatically — so this year's renewal is never the last one tracked.
Patent Renewal Fees — All 18 Years, All Categories
Fees increase in blocks — earlier years are cheaper; later years cost significantly more. Startups pay as little as 1/5th of large entity rates.
| Year | Individual / Startup | Small Entity | Large Entity | Due Date |
|---|---|---|---|---|
| 2–5 | ₹800/year | ₹2,000/year | ₹4,000/year | End of each year from filing |
| 6–10 | ₹2,400/year | ₹6,000/year | ₹12,000/year | End of each year from filing |
| 11–15 | ₹4,800/year | ₹12,000/year | ₹24,000/year | End of each year from filing |
| 16–20 | ₹8,000/year | ₹20,000/year | ₹40,000/year | End of each year from filing |
* E-filing discount of 10% applies. Grace period surcharge: 10% per month up to 6 months. All fees per patent, per year.
Key Facts
Why Choose TaxClue?
All 18 Years Tracked
Never miss a renewal due date.
Portfolio Management
Multiple patents, one dashboard.
Restoration Experts
Lapsed patent recovery within 18 months.
4.9/5 · Registered Agents
IPO-qualified patent agents.
Frequently Asked Questions
A Patent You Don't Renew Is a Patent You Don't Own
The IPO will not send you a reminder. One missed renewal fee ends 20 years of exclusive rights — and there is no recovery after 18 months. TaxClue tracks every renewal date, calculates exact fees, and pays on time, every year.
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