What are the restrictions of patent right?

Legal analysis: There are some limitations: compulsory license: compulsory license, also known as involuntary license, refers to an administrative measure that the patent administrative department of the State Council directly permits an applicant who has the implementation conditions to exploit the invention or utility model patent without the consent of the patentee according to law.

Legal basis: Article 48 of the Patent Law of People's Republic of China (PRC) is under any of the following circumstances, and the the State Council Patent Administration Department may grant a compulsory license to exploit the invention patent or utility model patent upon the application of a unit or individual with implementation conditions:

(1) It has been three years since the patent right was granted and four years since the patent application was filed, and the patentee has not implemented or not fully implemented his patent;

(2) The patentee's act of exercising the patent right is recognized as a monopolistic act according to law, so as to eliminate or reduce the adverse effects of the act on competition.