The late fee for paying the patent annual fee is charged according to a certain proportion of the annual fee payable, but if it does not exceed the prescribed one-month period, there is no need to pay the late fee.
Late payment refers to the method by which the administrative organ imposes new payment obligations on the counterpart who fails to fulfill the payment obligations within the time limit. The purpose is to urge them to fulfill their obligations as soon as possible, which belongs to a specific form of execution punishment in administrative enforcement.