(2) Compulsory license to eliminate or reduce the adverse effects of monopolistic behavior on competition.
(3) Compulsory license granted for the purpose of public interest.
(4) Compulsory license for public health purposes.
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) The patentee fails to exploit or fully exploit his patent for three years from the date of patent grant, and for four years from the date of patent application without justifiable reasons; (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.