The application number is the number given to a patent application by China Patent Office at the same time, all of which are coded by eight digits, with the first two digits representing the year of application, the third digit representing different patent types, "1" representing the invention patent, "2" representing the utility model, "3" representing the design patent, the last five digits being the serial numbers of various patent applications in that year, and finally adding a decimal point and a computer check code. Example:
9914538.6.