Second, the patent for utility model (10-0/year), the patent for utility model and the patent for invention shall be submitted to the patent office together with the patent application documents such as the request, the patent claim and the specification.
3. Invention patents (2 -3 years). The authorization period of an application for a patent for invention is generally about 3-5 years.
Legal basis: Article 34 of the Patent Law of People's Republic of China (PRC). After receiving an application for a patent for invention, the administrative department for patent in the State Council, after preliminary examination, finds that it conforms to the provisions of this Law, and shall publish it within 18 months from the date of application. The patent administration department of the State Council may publish its application at an early date upon the request of the applicant.