Can patent renewal fees be paid in advance?

Yes. Renewal fees for multiple future years can be paid in advance. A 10% discount is available if fees for more than three years are paid together.

What happens if patent renewal fees are not paid?

If renewal fees are not paid within the prescribed timeline, the patent will lapse. A six-month grace period with late fees is available, and restoration may be possible under certain conditions.

Do renewal fees depend on the type of invention?

No. Patent renewal fees depend only on the entity type and the patent year, not on the technology or industry.

Patent Renewal Fee Calculator India (2026) | Maintenance Fees Year 3

Q: When do patent renewal fees start in India?

Patent renewal fees start from the third year of the patent term and must be paid annually after grant to keep the patent in force.

Calculate Annual Patent Renewal & Maintenance Fees from Year 3 to Year 20

Instant Patent Renewal Fee Calculator

Use this calculator to estimate the official patent renewal fees payable in India after a patent has been granted. The tool helps you calculate annual maintenance costs from the 3rd year up to the 20th year, based on your entity type and filing route.

Patent Details

Entity Type

Route

Filing Date

Grant Date

Already Paid Renewal Fees?

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

For renewal purposes, government fees are the same for natural persons, startups, and small entities. Higher fees apply to large entities.

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:

Patent Renewal in India

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.

Patent Ceased to Have Effect in India

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:

Patent Fees Calculator

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

How to Check Indian Patent Status

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

Frequently Asked Questions

When do patent renewal fees start in India?

Renewal fees start from the 3rd year calculated from the filing date of the patent application.

Can renewal fees be paid in advance?

Yes. Renewal fees may be paid in advance for multiple future years after grant.

Are renewal fees the same for individuals and companies?

Renewal fees are the same for natural persons, startups, and small entities. Higher fees apply to large entities.

Does the calculator include restoration fees?

No. This calculator estimates only official renewal and maintenance fees. Restoration fees are separate and depend on statutory conditions.

Plan Your Patent Maintenance with Clarity

Patent renewal is both a compliance requirement and a strategic decision across the 20-year patent term.

Use the Patent Renewal Fee Calculator to estimate official renewal costs quickly and accurately. For tailored review or execution support, professional assistance can help prevent avoidable procedural risks.

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

Patent Renewal Fee Calculator India (2026)

Instant Patent Renewal Fee Calculator

What This Calculator Covers

Patent Renewal Fee Structure in India (Summary)