If a Chinese entity or individual files an international application, it can apply in the following two ways: (1) Apply at the Patent Office of the State Intellectual Property Office, and then request priority and apply abroad within one year. (This country has a priority agreement with China) (2) Apply directly through PCT at the Patent Office of the State Intellectual Property Office. Regarding patent agency, Article 18 of the Patent Law stipulates that if a foreigner, foreign enterprise or other foreign organization without a habitual residence or business office in China applies for a patent in China, he shall apply for a patent in accordance with the agreement signed between his country and China or ** *International treaties to which the same party is a party, or in accordance with the principle of reciprocity, and in accordance with this law. Article 19 of the Patent Law stipulates that when foreigners, foreign enterprises or other foreign organizations without regular residence or business offices in China apply for patents and handle other patent affairs in China, they shall entrust a patent agency designated by the patent administration department of the State Council. handle. Chinese entities or individuals that apply for patents and handle other patent matters domestically can entrust a patent agency to handle them. Patent agencies shall abide by laws and administrative regulations and handle patent applications or other patent matters as entrusted by the agent; they shall be responsible for keeping confidential the contents of the agent's inventions and creations, except where the patent application has been published or announced. The specific management measures for patent agencies shall be stipulated by the State Council.