How long will the invention patent actually be examined?

The time limit for substantive examination of the invention patent can be filed at any time within three years from the date of filing the patent application. After the applicant has filed an application and paid the relevant fees, the patent department will conduct substantive examination of the application materials. If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.

legal ground

Article 35 of the patent law

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substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.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.