Analysis of the properties of the international patent classification

Zheng Fen

World Patent Information, 1987, vol. 9, issue 3, 152-156

Abstract: The article describes the basic characteristics of the International Patent Classification (IPC), the way it was built up, the type of subdivisions, uses of references and notes, and the use of the 'X' system for classifying newly developed technology. It then goes on to discuss the defects of the system, such as the difficulty of classifying in the IPC all aspects of an invention and the limitations that classification in which an IPC symbol represents the whole inventive concept of a document (as compared with indexing in which individual features of an invention are coded) imposes upon searching, particularly in respect to computerized searching. The author outlines his views on the ways in which the IPC should be developed in the future into order to utilize fully the capabilities of automatic indexing and searching.

Date: 1987
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