Does the National Patent Office issue a payment notice?

First, under normal circumstances, unless the patentee fails to pay the fee normally within the time limit, the patent office will not issue a notice of payment. If you receive the payment notice, it means that it is overdue and you need to pay an extra late fee.

Secondly, based on the date of application, the annual fee for the next year should be paid in advance every year, preferably before that date.

Third, you can call the Patent Office to check the payment details: 62085566.