As a result of cooperative effort between the United States Patent and Trademark Office (USPTO) and State Intellectual Property Office (SIPO) of the People’s Republic of China, Chinese patent documentation is now available for search and retrieval from the USPTO website via the Global Patent Search Network. This tool will enable the user to search Chinese patent documents in the English or Chinese language. The data available include fulltext Chinese patents and machine translations.
Also available are full document images of Chinese patents which are considered the authoritative Chinese patent document. Users can search documents including published applications, granted patents and utility models from 1985 to 2012.
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