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专利文献以技术新、报道快、数量大、内容详尽,广泛和集中为特点,系统地反映着科学技术发展的历史,是丰富的技术知识宝库。它是人们掌握科学技术发明的重要情报源。目前世界上已有90多个国家和国际性的专门组织出版专利文献,年出版量达一百多万件,其中有80%以上采用了《国际专利分类法》类分专利文献。《国际专利分类法》(以下简称 IPC)已有50多个国家和国际组织采用,它是一部专供分类发明与专利的分类法。按照国际协定已经过三次较大规模修订,现已达到比较成熟与完善的水平。并为众多的国家的专利局所接受,用于分类申请案,建立检索文档和编制检索工具等。
The patent literature is characterized by new technology, fast reporting, large quantity, detailed contents, extensive and concentrated characteristics, systematically reflecting the history of the development of science and technology, and is a treasure house of rich technical knowledge. It is an important source of information for people to master the invention of science and technology. At present, there are over 90 countries and international specialized organizations that publish patent documents, with over 1 million published annually. Over 80% of them have adopted the patent classification of the International Patent Classification. The International Patent Classification (IPC) has been adopted by more than 50 countries and international organizations. It is a taxonomies dedicated to the classification of inventions and patents. According to the international agreement, it has already been revised on a large scale three times and has now reached a relatively mature and perfect level. And is accepted by the patent offices of many countries for the classification of applications, the establishment of search documents and the preparation of search tools.