Core Resources
Patent Lens
Full-text of 7 million patent documents from US, Europe, Australia, WIPO, and counterparts in up to 60 countries.
U.S. Patents and Patent Applications -- Full-Text Images (1790 to date)
-Free AlternaTIFF Viewer for Images
European Patent Office -- esp@cenet.com
Dates of coverage vary by country
Free Patents Online
Download patents from the U.S. and the World Intellectual Property Organization (WIPO)in pdf or TIFF formats.
