Patents - General Information

  • You can claim priority according to Paris Convention within: 12 months from the first filing date.
  • Member of: Paris Convention, PCT.
  • Period of protection of a patent: 20 years.
  • Time to pay publication fees after grant (acceptance): no time restrictions.
  • Time to pay registration fees after publication: directly after the end of opposition period.
  • Annuities: Annuity fees should be paid after the grant for national applications, while for PCT applications, annuities are paid yearly calculated from the filing date.
  • Allowed time to submit the assignment deed from the date of signing the agreement: no time restrictions.

A grace period of six months is granted for the late payment of annuities with a penalty charge


Patent applications should be filed within 12 months from the date of absolute disclosure regardless of the date of filing in any country to be accepted.

Patents based on foreign applications must provide letters patent after issuance under B1 or B2.

As for pending patents, the application will remain pending until it is issued.


Working of patents is required within 3 years from the date of grant. Otherwise, the patent will become subject to compulsory licensing.
It is possible to meet this requirement by publishing a notice in a daily newspaper allowing any interested parties to exploit the patent. This can be done every two years.

It is possible to file a renewal application in the last month of validity. A grace period of 1 year is given for the late renewal.