Through it one can seach foreign patents. JPO Homepage which has links to Trilateral Web Site where one can search Japanese patents. Abstracts are in English. KuesterLaw An award winning web site developed by Jeffrey Kuester dedicated to technology law information, including patent, copyright, and trademark law. PCT database WIPO site allows you to search International Applications published within the last year.
Bibliographic searchers are free.
Also market patent mapping software tools. Site is hosted by University of North Carolina SunSite system. Wacky patent of the month Unusual patents, updated on a regular basis. Inventor of the Week Lemelson-MIT awards web site that includes an inventor's handbook and links to patent resources. U.S. Copyright Office Information on copyright law and application forms.