The time for the patent owner to change is from the date of registration. According to relevant legal provisions, the patentee shall submit a written application for change. After the patent administration department of the State Council receives the application for an invention patent and determines that it meets the requirements of this law after preliminary examination, it will be announced immediately after eighteen months from the date of application.
Legal basis
Article 34 of the Patent Law of the People's Republic of China
After receiving the invention patent application, the patent administration department of the State Council shall If it is determined after preliminary examination that it meets the requirements of this Law, it will be announced immediately after eighteen months from the date of application. The patent administration department of the State Council may publish the application as early as possible upon the applicant's request.
Article 10
Patent application rights and patent rights may be transferred.
When Chinese entities or individuals transfer patent application rights or patent rights to foreigners, foreign enterprises or other foreign organizations, they must go through the procedures in accordance with the provisions of relevant laws and administrative regulations.
To transfer patent application rights or patent rights, the parties shall enter into a written contract and register it with the patent administration department of the State Council, which shall make an announcement. The transfer of patent application rights or patent rights takes effect from the date of registration.