Abstract:The open license regime is also called the license of right, which refers to a regime whereby the patentee, after submitting a declaration to the patent administration department and being announced by the patent administration department, agrees that any person may, on the basis of satisfying the conditions in the declaration, exploit his or her patent without his or her permission.The system is conducive to the transformation and dissemination of scientific and technological achievements, but its good operation depends on the scientific nature and rationality of the system design.Based on the Cournot competition model and through the construction of a sequential game mechanism, this paper analyzes the behavior of the patentee and the patentee in the patent trading market, and finds that under the existing market and legal environment, the patentee will choose the infringing production no matter whether the patentee opens the license or not.Therefore, measures can be taken to optimize the patent opening license system, such as providing differentiated annual patent fee exemption system and relaxing restrictions on the contents of patent opening license declaration, so as to encourage the patentee to implement the opening license and the subject of patent exploitation to accept the opening license.