Patent classification of patent classification number

The patent classification number of an application for a patent for invention and utility model is identified by the IPC International Patent Classification Table. When the same patent may have multiple classification numbers, the first one is called the main classification number. For example, if an application for a patent for invention or an application for a patent for utility model involves different types of technical topics, and these technical topics constitute invention information, it shall be classified several times according to the technical topics involved and given multiple classification numbers. Rank the classification number that best represents the invention information in the first place.

Classification table is a tool to classify patent documents in various countries. Its basic purpose is to become an effective retrieval tool for patent offices and other users to retrieve patent documents when determining the novelty and creativity of patent applications (including evaluating the advanced nature and practical value of technology).

In addition, the classification table also has important uses such as providing services:

(a) Using this classification table to arrange patent documents, users can easily obtain technical and legal information from it;

(b) As the basis for selective reporting to all users of patent information;

(c) As a basis for investigating the existing technical level in a certain technical field;

(d) As the basis of industrial property statistics, so as to evaluate technological development in various fields.

Part a-necessities of human life (agriculture, light industry and medicine)

Part b-operation and transportation

Part c-chemistry, metallurgy

Part d-textiles and paper making

Part e-fixed buildings (construction, mining)

Part f-mechanical engineering

Part g-physics

Part h-electrical design adopts Logano classification.

The arrangement of Locarno classification table;

It adopts a two-level structure, that is, it consists of large categories and small categories.

Both the large category number and the small category number use two Arabic numerals; Large category numbers and small category numbers are separated by dashes.

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.