Rule 13
Payment of renewal fees for European patents with unitary effect

(1)Renewal fees for European patents with unitary effect and additional fees for their late payment shall be paid to the European Patent Office. Those fees shall be due in respect of the years following the year in which the mention of the grant of the European patent which benefits from unitary effect is published in the European Patent Bulletin. 

(2)A renewal fee for the European patent with unitary effect in respect of the coming year shall be due on the last day of the month containing the anniversary of the date of filing of the European patent application which led to the European patent with unitary effect. Renewal fees may not be validly paid more than three months before they fall due. 

(3)If a renewal fee is not paid in due time, the fee may still be paid within six months of the due date, provided that an additional fee is also paid within that period. 

(4)A renewal fee in respect of a European patent with unitary effect falling due under paragraph 2 within three months of the notification of the communication referred to in Rule 7(1) may still be paid within that period without the additional fee referred to in paragraph 3.

(5)A renewal fee for a European patent with unitary effect which would have fallen due under paragraph 2 in the period starting on the date of publication of the mention of the grant of the European patent in the European Patent Bulletin up to and including the date of the notification of the communication referred to in Rule 7(1) shall be due on that latter date. This fee may still be paid within three months of that latter date without the additional fee referred to in paragraph 3.

(6) Rule 51, paragraphs 4 EPC and Rule 51, paragraphs 5, EPC shall apply mutatis mutandis.