For the patent fees remitted by post office or bank, the patent application number, fee name, amount and remittance date listed on the invoice should be checked in time after receiving the fee invoice issued by our bureau. If an error is found, it shall state its opinions to the Patent Office within 7 days, explaining the reasons for the error and the correct data. The unified format (opinion statement) formulated by the Patent Office shall be used when presenting opinions. If the fault liability belongs to the applicant, the payment date is the date when the statement of opinions is put forward, and if the responsibility belongs to the Patent Office (the applicant shall provide evidence and be verified by the Patent Office), the payment date is the date when the original fee is remitted.
Those who pay fees to the patent situation should check the items listed in the invoice after issuing the invoice in the patent office. If errors are found, the Patent Office shall be required to correct them on the spot. If there is no mistake, you should sign in the drawee column of the invoice.