Google PatentsGoogle Patents indexes more than 87 million patents and patent applications with full text from 17 patent offices, including: United States Patent and Trademark Office (USPTO), European Patent Office (EPO),China's National Intellectual Property Administration (CNIPA),Japan Patent Office (JPO), Korean Intellectual Property Office (KIPO), World Intellectual Property Organization (WIPO), Deutsches Patent- und Markenamt (DPMA), Canadian Intellectual Property Office (CIPO), Russia, UK, France, Spain, Belgium, Denmark, Finland, Luxembourg, the Netherlands.