Calculate Annual Patent Renewal & Maintenance Fees from Year 3 to Year 20
Instant Patent Renewal Fee Calculator
What This Calculator Covers
This calculator estimates:
- ✓Year-wise renewal fees from 3rd to 20th year
- ✓Fees for natural persons, startups, small entities, and large entities
- ✓Renewal costs for ordinary and PCT national phase patents
- ✓Advance renewal payments for multiple future years
Note: This calculator reflects only official government fees prescribed by the Indian Patent Office. Professional or attorney fees are not included.
Patent Renewal Fee Structure in India (Summary)
Below is a simplified summary of official renewal fees payable through electronic filing.
| Patent Year | Natural Person / Startup / Small Entity (₹) | Large Entity (₹) |
|---|---|---|
| 3rd – 6th Year | 800 | 4,000 |
| 7th – 10th Year | 2,400 | 12,000 |
| 11th – 15th Year | 4,800 | 24,000 |
| 16th – 20th Year | 8,000 | 40,000 |
Everything You Need to Know About Patent Renewal
Timelines, consequences, and strategies for managing your patent's 20-year lifecycle.
When Are Renewal Fees Payable?
Renewal fees:
- ✓Start from the 3rd year counted from the filing date
- ✓Must be paid before the expiry of the preceding year
- ✓Can be paid annually or in advance for multiple years
Renewal timelines are calculated from the filing date, not the grant date.
For a complete explanation of timelines and the 3rd year rule, refer to:
What Happens If Renewal Fees Are Not Paid?
If renewal fees are not paid by the due date:
- A 6 month extension period is available upon payment of the prescribed extension fee
- If payment is not completed within that period, the patent ceases to have effect
Restoration may be available within 18 months from the cessation date, subject to statutory conditions.
Renewal Fees vs Filing Fees
This page calculates only post-grant renewal and maintenance fees.
If you need to estimate:
- A 6 month extension period is available upon payment of the prescribed extension fee
- If payment is not completed within that period, the patent ceases to have effect
Use our filing-stage tool:
Managing Your Patent Over 20 Years
Strategic decisions and professional support for long-term patent maintenance.
Strategic Patent Maintenance
Renewal fees increase progressively across the 20-year term. Many patent owners therefore:
- ✓Maintain commercially valuable patents
- ✓Allow non-core patents to cease
- ✓Align renewal decisions with licensing or enforcement strategy
Professional Renewal Support
Although renewal fees are statutory, errors in:
- Entity classification
- Filing date interpretation
- Payment timing
- Advance renewal calculation
can result in irreversible loss of rights. Intepat assists with:
- ✓Patent renewal tracking
- ✓Advance renewal planning
- ✓Restoration advisory (where legally permissible)
- ✓Ongoing patent maintenance support