When the request for substantive examination of the invention patent is issued, will the Patent Office reply to inform you to pay the actual examination fee?

1. The Patent Office will not notify you in writing to pay the substantive examination fee. The patent law stipulates that the time limit for filing a request for substantive examination is within 3 years from the date of patent application. Otherwise, the patent is deemed to have been withdrawn.

2. Only after submitting the substantive examination request and paying the substantive examination fee is it a complete process of submitting the substantive examination request.

3. The amount of substantive examination fee depends on whether the applicant is a natural person or a legal person. If the applicant is a natural person, the substantive examination fee is 375 yuan; If it is a legal person, it shall pay the substantive examination fee, 750 yuan.