Domestic units or individuals can file international applications for patents. After a Chinese individual or unit makes an invention, they can first apply domestically and claim priority to apply for a foreign patent within 12 months; they can also directly file an international application, but they must specify both the foreign country and China in the application. Legal basis: "Patent Law of the People's Republic of China" Article 29 Within twelve months from the date when the applicant first files a patent application for an invention or utility model in a foreign country, or from the date when a design is filed in a foreign country for the first time If a patent application is filed in China on the same subject within six months from the date of filing a patent application, the foreign country shall comply with the agreement signed by the foreign country with China or the international treaty to which both countries are party, or in accordance with the principle of mutual recognition of priority. , can enjoy priority. Within twelve months from the date of first filing a patent application for an invention or utility model in China, or within six months from the date of first filing a patent application for a design in China, the applicant shall submit the application to the Patent Administration Department of the State Council. Anyone who files a patent application on the same subject can enjoy priority.