The annual fee receipt of the patent office was not sent to the mailbox.

If you don't receive the receipt by the due date, you can call the Patent Office for fee consultation (0 1062356655 to 5 for receipt inquiry).

When the patent remitter remits money through the bank or post office, the remitter will receive the receipt issued by the patent office about one month after the remittance date. If you don't receive the receipt by the due date, you can call the Patent Office for fee consultation (0 1062356655 to 5 for receipt inquiry).

Because the remitter is not familiar with the remittance process, he can return the remittance address to the patent office after the remittance is completed, or he has not received the receipt. The remitter can fax or email the return address and the voucher of this remittance to the Patent Office to get the receipt again.