• Annuities: Annuity fees can be paid between 1 January and 31 March of the year in which the annuity falls due. A penalty fee will accrue if no payment is made by the 31 March. The Registry will not accept payment of the outstanding annual fee unless the applicable penalty is paid simultaneously and together with any outstanding fees (including outstanding penalty fees) due in respect of prior years.
• Allowed time to submit the assignment deed from the date of signing the agreement: within 2 months from the date of recording the change the UK or OHIM registration.

A patent registration is valid for the same period as specified on the underlying UK or OHIM registration on which it is based.