Patent applications for inventions and utility models adopt the International Patent Classification (IPC).
The form of IPC is: department (1 letter), big category (2 numbers), small category (1 letter), big group (1~3 numbers), small group (2~4 numbers).
For example, A63H3/40 can be interpreted as "moving the doll's eyes in the doll's place"
A63H3/00 doll
A63H3/36？ ingredient
A63H3/38 doll's eyes
A63H3/40？ It will move.
Note: The patent classification number of an application for a patent for invention and utility model is determined according to the technical subject of the patent.
The design adopts Logano classification, adopts two-level structure, and consists of large categories and small categories.
Both the large category number and the small category number use two Arabic numerals; Dashes are used to separate large category numbers from small category numbers.
For example: 17 musical instrument (category number: 17 category name: musical instrument)
17-03 stringed instruments (subclass number: 17-03 subclass name: stringed instruments)
"loc (n) cl. "n is the version number of the Locarno International Design Classification Table used before the major category number and the minor category number.
For example, LOC(8)C 1. 17-03.