The notice of qualified patent preliminary examination said that the request for substantive examination should be submitted, but it was already submitted in the preliminary examination. How can I pay the substantive examination fee?
The examination of invention patent includes two stages: preliminary examination and substantive examination, in which the substantive examination begins at the request of the applicant. If no request for substantive examination is made within 3 years from the date of application, the application shall be deemed to have been withdrawn.
The request fee for substantive examination is the same as the application fee, but the name and amount of the fee have changed. The standard is 2500 yuan, and there should be a notice of whether to reduce or waive the fee when accepting it.