The procedure for examining whether the invention-creation in the application documents meets the substantive requirements of novelty, creativity and practicality is patent substantive examination. And the substantive examination of the invention patent needs to be put forward in time within three years from the date of application.
Legal objectivity:
patent law of the people's republic of china
Article 35
Within three years from the date of filing, the patent administration department of the State Council may conduct substantive examination according to the request made by the applicant at any time;
If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.
The patent administrative department of the State Council may, when it deems it necessary, examine the application for a patent for invention on its own.
patent law of the people's republic of china
Article 36
When requesting substantive examination, the applicant for a patent for invention shall submit reference materials related to his invention before the filing date.
Where an application for a patent for invention is filed in a foreign country, the patent administration department of the State Council may require the applicant to submit the information retrieved during the examination of his application in that country or the information on the examination results within a specified time limit;
If the application is not submitted within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.