Secondly, foreigners must entrust an agency to apply for a patent, and China people can apply by themselves or choose an agency to entrust the application. To use a work, you must obtain the authorization of the owner of the work. Or you buy the intellectual property of this work from the owner.
Where a work is used, a licensing contract or a patent transfer contract shall be signed with the patentee. Among them, sensitive topics such as the scope of use and the number of years should be raised.
I hope I can help you!