http://www.patentlens.net
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The Patent Lens allows full-text searching of more than 7 million patent documents from US, Europe, Australia and WIPO, including their status and counterparts in up to 60 countries. They also provide multipage PDFs of US, AU, WIPO and EP patents free of charge. Its development has been supported by the Rockefeller Foundation.

Their patent collections include full text searchable AU, EP, WO, and US patents.