European Patent Office -- File European Patent Online Through This Site
IBM Patent Server -- Searchable Database of Patents Documented Since 1974
Inventors & Inventions-Science Base -- Patent Locater Researches Patents
The Inventors' BookSource -- Site for Advice and Inspiration to Artists/Inventors
MicroPatent's Patent Web -- Search U.S. Patents from 1884
Patent Portal -- Links to Services and Resources Related to Patents
Radio Free PTO -- Information on Significant Patent Legislation
Searchable Directory of Inventions and Inventors -- Locate Researchers in Your Field
Software Patent Institute -- Courses Offered to Improve the Patent Process
STO's Internet Patent Search System -- Find Information About the Patent Process
Wacky Patent of the Month -- Recognizes Unconventional Patented Inventions