Please help explain the patent priority and the divisional application of patent.

If priority is claimed, the prior patent must be abandoned. Priority is to ensure the novelty of applying for a patent later, and to cover the time between applying for a patent later and applying for a patent before, so as to better exclude other similar schemes. The same technical theme means that the previous technical scheme must be embodied in the later technical scheme, and the patent requiring priority must have been applied but not authorized. Invention means within 12 months after application.

Split application means that the patent document contains several technical solutions without technical characteristics, and one application needs to be split into several applications.

Patent Literally, "patent" refers to exclusive interests and rights. The word "patent" comes from Latin "Litterae patentes", which means open letters or open documents. It is a certificate used by medieval monarchs to issue certain privileges, and later refers to the exclusive right certificate signed by the British king himself. Patents are the largest source of technical information in the world. According to empirical statistical analysis, patents contain 90%-95% of the global scientific and technological information.