Legal basis: Detailed Rules for the Implementation of the Patent Law of People's Republic of China (PRC) Article 2 All procedures stipulated in the Patent Law and these Detailed Rules shall be handled in written form or in other forms stipulated by the patent administration department of the State Council.
"Patent Contribution Number Standard" 4 Numbering Rules of Patent Contribution Number 4. 1 Composition of Patent Contribution Number The patent contribution number is represented by 9 Arabic numerals, including application type number and serial number. The 1 bit in the patent contribution number indicates the application type number, and the 2-9 bits (* * * the 8th bit) are the document serial numbers, indicating the arrangement order of the document disclosure or announcement. 4.2 Application Category Number The application category number in the Patent Document Number is represented by 1 Arabic numerals. The meanings of the numbers used are as follows: 1 stands for invention patent application; 2 represents an application for a patent for utility model; 3 denotes an application for a patent for design. The meaning of other Arabic numerals not included in the above-mentioned application category number when used as category number shall be stipulated separately by China National Intellectual Property Administration.