The Rules relating to Fees (RFees) determine the amounts of the fees levied by the EPO and the ways in which they are to be paid (Art. 51(4) EPC), They also contain provisions regulating the due date for fees, the particulars to be indicated concerning payments, the date of payment, insufficient payments and certain refunds and reductions.

Art. 61 EPC deals with the remedies available where a person other than the patent applicant is held by a national court to be the person entitled to the grant of a European patent. The Article remains unchanged in substance. For further details, see R. 16 EPC and R. 17 EPC.

Under R. 128 EPC notification may be effected on the premises of the EPO by delivery by hand of the document to the addressee, who must on delivery acknowledge its receipt. Notification is deemed to have been effected even if the addressee refuses to accept the document or to acknowledge receipt thereof.

In R. 126 EPC, and also in R. R. 125(2) EPC and R. 133(1) EPC, references to "post" have been replaced by "postal services" and "postal service providers" in 2015. This gives the Office the freedom to choose any postal service provider it regards as suited to serving notification.