Fees for the processing of a request, payable by the person making such request, shall be as follows: (a) ... ; (b) for a request for the following entries into the Register of Community plant variety rights (register fee): transfer of a Community plant variety right, contractual exploitation right, identification of varieties as initial or essentially derived, institution of action in respect of claims referred to in Articles 98 (1), (2) and 99 of the Basic Regulation, ...