According to the relevant provisions of my country's Patent Law, the patentee has the right to transfer gifts or even sell the patent right. However, when making a patent change, both parties should sign a corresponding assignment agreement, and submit the assignment agreement to the national patent office, which will review it and finally determine whether to agree to the assignment or reject the assignment. For such a regulation, many companies or individuals want to know which materials in the corresponding materials to be submitted to the National Patent Office require special attention, how can the success rate of patent changes be improved, and the application is not rejected today. Just a brief introduction to this article.