According to China's patent law, the term of invention patent right is several years.

1, the term of invention patent is 20 years, and the term of utility model patent and design patent is 10 years, all of which are counted from the date of application.

2. Legal basis: Patent Law

Article 42 From the date of filing, the term of patent right for invention is 20 years, that for utility model is 10 year, and that for design is 15 year.

Where a patent for invention is granted for four years from the date of application for a patent for invention and three years from the date of request for substantive examination, the patent administration department of the State Council shall, at the request of the patentee, compensate for the unreasonable delay of the invention patent in the process of authorization, except for the unreasonable delay caused by the applicant.

In order to compensate for the time occupied by the review and approval of new drugs, the patent administration department of the State Council shall compensate the patentee for the patent term of new drug-related invention patents that have been approved for listing in China. The compensation period shall not exceed five years, and the total effective patent right period after the new drug is approved for marketing shall not exceed fourteen years.