The principle of priority is one of the principles of patent application. Including foreign priority and domestic priority. The main content of the right of priority is that the applicant shall apply within 12 months from the date when the applicant first files a patent application for the invention or utility model in a foreign country, or within six months from the date when the applicant first files a patent application for a design in a foreign country. , and files a patent application for the same subject in China, it may enjoy priority in accordance with the agreement signed by the foreign country with China or the international treaty to which both countries are parties, or in accordance with the principle of mutual recognition of priority. If the applicant files another patent application for the same subject with the Patent Administration Department of the State Council within twelve months from the date of first filing a patent application for an invention or utility model in China, the applicant may enjoy priority. The former is foreign priority, and the latter is domestic priority. The two are different in terms of applicable patent types and application locations. For example, if A applies for a patent for an invention in the United States on October 31, 2006, and then files a patent application for the same subject in China on October 20, 2007, in accordance with the agreement signed between the United States and China or *** International treaties to which it is a party, or in accordance with the principle of mutual recognition of priority, China will regard the date of its application in the United States, that is, October 31, 2006, as the date of its application to China. If between October 31, 2006 and October 2007 During the 20th, someone applied for a patent on the same subject in China, but the State Intellectual Property Office did not grant the authorization. Legal basis: Article 29 of the "Patent Law of the People's Republic of China" The applicant shall apply for a patent within twelve months from the date when the invention or utility model is filed for the first time in a foreign country, or from the date when the design is filed for the first time in a foreign country. 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 an international treaty to which both countries are party, or in accordance with the principle of mutual recognition of priority. , can enjoy priority. If the applicant files another patent application for the same subject with the Patent Administration Department of the State Council within twelve months from the date of first filing a patent application for an invention or utility model in China, the applicant may enjoy priority. ##The priority of patent applications is divided into foreign priority of foreign-related patent applications and domestic priority of domestic patent applications. The former means that when the same patent applicant applies for patents in different countries for the same invention and creation, he can apply for patents in different countries. The patent filing date in the first filing country is the priority date, and each subsequent filing country is requested to use its priority date as the patent filing date in that filing country within a certain period of time. A "certain period" is also often called a "priority period." Article 29 of the Patent Law stipulates: “Within 12 months from the date the applicant first files a patent application for an invention or utility model in a foreign country, or from the date a design first files a patent application in a foreign country, If a patent application is filed in China on the same subject within 6 months, the foreign country may enjoy the right of priority in accordance with the agreement signed by the foreign country and China or the international treaty both parties are a party to, or in accordance with the principle of mutual recognition of priority. "Also. That is to say, the priority period for invention or utility model patent applications in my country is one year, while the priority period for designs is half a year. The priority periods stipulated by most countries are the same as those in our country. The latter, that is, the domestic priority of domestic patent applications refers to the same patent applicant filing another patent application for the same subject with the patent administration department of the State Council within 12 months from the date of first filing a patent application for an invention or utility model in China. , can enjoy priority. That is, the filing date of the first patent application filed can be regarded as the filing date of subsequent domestic patent applications filed on the same subject. In our country, the above-mentioned priority rights must meet the following points: 1. When filing a patent application, declare the request for priority in writing; 2. Submit the first patent application documents to the Patent Office of the State Intellectual Property Office within 3 months. 3. If the patent application is filed for the first time in a foreign country, the foreign country and our country must jointly participate in relevant international treaties or sign relevant bilateral agreements or mutually recognize the principle of reciprocity. The patent application submitted by the patent applicant shall Copies of the first patent application documents must be certified by the patent acceptance authority of that country.