After the invention patent is accepted, it has to undergo preliminary examination, which is not as strong as utility model and appearance patent. Mainly depends on whether there is any non-compliance with laws and regulations, and whether there are propaganda terms. If there is no big problem, it will be published online. If there is any problem, the applicant will be asked to correct it. Those who pass the rectification shall be announced, and those who fail shall be rejected.
After the disclosure, the invention enters the actual trial stage, and the examiner further examines the patent application documents, such as whether it can be realized in theory. Then the examiner will also search for technical documents from all over the world, and if they find the same or similar, they will issue a review opinion. After the applicant pays the fee, he will be qualified and authorized to issue certificates. Those who are unqualified will not be accepted.
If no problems are found, the authorization notice will be issued directly, and the certificate will be issued after payment.