The time of patent substantive examination is uncertain, which depends on the content of the invention, the examiner's understanding of the invention, the examiner's work arrangement and the time for the documents to go back and forth between the examiner and the applicant or his agent. Generally 6- 18 months. Of course, if a reply can't solve the problem, there may be two links, three links, and the time may be longer.
The substantive examination is a necessary stage before the invention patent application is authorized. The purpose of substantive examination of an application for a patent for invention is to determine whether the application for a patent for invention should be granted a patent right, especially whether it conforms to the provisions of the Patent Law on novelty, creativity and practicality. The substantive examination procedure is usually initiated by the applicant at his request. If the application for a patent for invention is not found to be rejected after substantive examination, the Patent Office will make a decision to grant the patent right for invention.
Substantive examination requires the applicant to submit a request for substantive examination to China National Intellectual Property Administration within three years from the date of patent application (priority date with priority).
Procedure for actual trial request: Submit the actual trial request (downloaded from China National Intellectual Property Administration website) within the above three years, and pay the actual trial fee of 2,500 yuan (if the fee is reduced, the unit only needs 750 yuan, and the individual only needs 375 yuan). )
You can wait after requesting the actual trial and payment. The examiner will issue a notice of examination opinions according to the specific circumstances of the patent application, and you can reply according to the notice of examination opinions.