2.PCT application is divided into two stages: international stage and domestic stage. In the international stage, firstly, the patent application is accepted and the patent is formally examined, then the international search is carried out, and finally the international preliminary examination is carried out. At the domestic stage, only the relevant PCT member countries need to examine and decide whether the PCT patent application can obtain the patent of that country.
3. According to the PCT Applicant Qualification Treaty, nationals or residents of the States parties to the Treaty have the right to file international applications. Therefore, nationals and residents of China have the right to file international applications.