1. It usually takes 3-5 months after the application is submitted for public hearing (in the case of requesting early disclosure, if there is no request for early disclosure, it will be delayed to 18 months after the application date, that is, one and a half years);
2. The substantive examination takes 1-2 years, which is uncertain;
Invention patents need to go through the process of substantive examination, that is, the examiner will search the database of the patent office (worldwide) for similar documents about the technical content of the patent, then compare the found technical documents with the patent, comment on the places where the patent does not conform to the provisions of the patent law (on the basis of writing instructions, it is usually to ask creative questions), and then issue examination opinions to the applicant, and the applicant will reply. If the examiner still cannot be persuaded, the second, third and third time will be carried out.
3. After receiving the authorization notice and paying the fee, it will take about 2 months to issue the certificate.
Therefore, it is a long process to apply for an invention patent, so please wait patiently for the review results.
Yike Patent Center answers your questions, hoping to help you!