Legal analysis: In a patent application, an applicant may claim one or more priorities; if multiple priorities are claimed, the priority period of the application shall be calculated from the earliest priority date. . Patent priority means that after a patent applicant files a patent application for his invention and creation in a certain country for the first time, and within the legal period, he files a patent application for an invention and creation with the same theme in China within the statutory period, according to relevant laws and regulations, his subsequent application Taking the date of the first patent application as the filing date, the right enjoyed by the patent applicant in accordance with the law is the right of priority.
Legal basis: "Patent Law of the People's Republic of China" Article 29 Within twelve months from the date of first filing a patent application for an invention or utility model in a foreign country, the applicant shall Or if a patent application is filed in China on the same subject matter within six months from the first patent application for a design in a foreign country, in accordance with the agreement signed between the foreign country and China or an international treaty to which China is a party, or Priority may be enjoyed in accordance with the principle of mutual recognition of 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. Patent applications filed on the same subject matter can enjoy priority.