ICIREPAT, a subsidiary of the World Intellectual Property Organization (WIPO), aims at extensive international cooperation and exchange, enabling readers and patent workers to quickly identify and find the contents of various descriptions in patent documents, and at the same time facilitating computer storage and retrieval. The International Organization for Standardization (ISO) has been ordered to draw up an international standard code (INID-International Improvement Number for Identifying (Bibliographic) Data) for patent document description projects, which stipulates that all kinds of patent documents published by patent offices in various countries should be marked accordingly starting from 1973. This code is represented by two Arabic numerals enclosed in circles or brackets.
1979, the function of ICIREPAT was replaced by WIPO standing Committee on patent information, 1987, and it was renamed WIPO standing Committee on industrial property information (PCIPI) again. Its purpose is to establish and strengthen cooperation in industrial property documents and information among member countries. 1997, PCIPI adopted the new patent document standard, namely ST.9: suggestions on description data of patents and supplementary protection certificates, and expanded the description items of patent documents from the original 8 items to 9 items: document marking; Patent application or supplementary protection certification materials; Priority data in line with the Paris Convention; The known date of the document; Technical information; Other legal or procedural references related to domestic or previous domestic patent documents, including their unpublished applications; Patent-related personnel cite or supplement protection certificates; Data related to international conventions (except Paris Convention) and laws on supplementary protection certificates.