Some sites to search non-patent prior art:
CiteSeer
IBM Research
National Institute of Standards and Technology (NIST)
Scirus
Free Databases for Great Prior Art Searches
10/03/2006 By Leave a Comment
Domestic and International Patents, Trademarks, and IP Strategy
Fight for free speech online - reject the Internet #Blacklist Legislation. https://t.co/SgGQfBaV via @eff #SOPA #PIPA #J18 - posted on 01/18/2012
US District Court - #Apple fails to make case #Samsung Galaxy Tab closely copied iPhone and iPad in look, packaging, UI http://t.co/myuGaO26 - posted on 12/05/2011
Incredible Art Made by Projecting Light onto a Polyhedron Sculpture http://t.co/szhFR8Xl - posted on 11/09/2011
Oct 28 is the Last Day to Block Registration of Your Trademark as a .XXX Domain Name http://t.co/vNNwTOOJ - posted on 10/26/2011
Stretchable, skinlike sensor developed http://t.co/S78Fw2DM - posted on 10/25/2011