How to judge the patent type according to China patent (application) number?

China patent (application) number consists of application year number+patent type number+application serial number, where 1 stands for invention patent, 2 stands for utility model and 3 stands for design. Among them, the year number before June 65438+1 October 20031consists of two digits, so the third digit indicates the patent type, such as 02286689.2 is a utility model patent; The year number after June 65438+1 October1in 2003 consists of four digits, so the fifth digit indicates the patent type. For example, 2005 1005734 1.3 is an application for a patent for invention.