What is the priority of patent application?

Legal analysis: the priority of patent application means that after the patent applicant filed a patent application for his invention for the first time, he filed a patent application for the invention-creation with the same theme within the time limit stipulated in the patent law, and the date of filing the next patent application is the date of filing the first patent application.

Legal basis: Article 30 of the Patent Law of People's Republic of China (PRC), where an applicant claims priority, he shall make a written statement at the time of application and submit a copy of the first patent application document within three months; Failing to submit a written statement or a copy of the patent application documents within the time limit shall be deemed as not claiming priority.