Patent annuities should be paid yearly. Annuities are payable from the date of filing. The first two annuities have to be paid at the moment of filing of the application. The first maintenance fee is due for the third year. The maintenance fees shall be due in respect of the third year and each subsequent year to a maximum of 15 years from the application date.

Maintenance fees for a patent/patent application in respect to the corresponding coming year are due on or before the day of the anniversary of the date of filing of the application. A fee for an extension of protection term for another 5 years should be paid along with the maintenance fee for the 11 th year. Six-month grace period is allowed provided a surcharge is paid. No restoration of the patent rights is possible if the payment of annuity is missed.

The industrial model patents are granted for a period of 5 years extendable for another 5 years and it is not required to pay maintenance fees.

The documents and information needed for carrying out the payment of annuities are the following:

- Particulars of the applicant/owner.
- Application/Patent number.
- Application date.
- POA (in case the representative person is not the agent of record).

The POA does not required legalization it must be simply signed by a representative person of the applicant company. The original POA may be filed latter provided a surcharge is paid.