Brief introduction of patent literature retrieval

That is, searching patents and patent documents. China Patent Retrieval System (CPRS) is a patent retrieval and full-text browsing system only used in China National Intellectual Property Administration LAN. The system includes: descriptive data of three types of China patents since 1985 and full-text descriptions of inventions and utility models; American patent description data and full text description since 1975; Various full-text descriptions of Japanese patents and utility models since 1993. Patent literature retrieval is the basic work for enterprises to fully understand the existing technology, improve the starting point of research and development, and avoid intellectual property risks. Because the original data of patents published online are incomplete and the language is obscure, it is difficult for enterprises to retrieve them without mastering professional retrieval methods and skills.