www.uspto.gov
http://www.google.com/patents
www.intelproplaw.com
www.pattools.com
http://www.patentlawportal.com
http://www.uspatentresource.com/
http://www.patentlawlinks.com
http://inventors.about.com
http://www.patentperfect.com
http://www.patentpath.com
