USTPO - Global Patent Search Network - China Patent Collection
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. More
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