Legal subjectivity:
The priority date is the date corresponding to the claim of priority in the patent (or utility model) application process. Priority is divided into two types: foreign priority and domestic priority. Article 29 of the "Patent Law" The applicant shall have twelve months from the date of first filing a patent application for an invention or utility model in a foreign country, or six months from the date of first filing a patent application for a design in a foreign country. If a patent application is filed in China on the same subject within the same month, the foreign country may enjoy priority in accordance 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. 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. Article 30 If the applicant claims priority, he shall make a written statement when applying and submit a copy of the first patent application document within three months; if the applicant fails to make a written statement or fails to submit a copy of the patent application document within the time limit, , it shall be deemed that no priority has been claimed.