About.com - a great patent resource site. 

American Intellectual Property Lawyers Association (AIPLA) includes general information about intellectual property law

American Law Sources - statutes, case law

Business Filings Database for Several States

Business Telephone Directory - useful for trademark searching

Canadian Patents

Copyright Office

Decisions - Court of appeals for the federal circuit (from Cornell)

European Patent Office has general information

Federal Circuit cases

Google patent search

Government and Legislative Information for legislation, congressional record, committee information and historical documents, Court of appeals for the federal circuit US Code and Code of Federal Regulations

IBM Patent Database (Now Delphion) is a free, searchable database including U.S., Japanese, European, and World Intellectual Property Organization patent publications

International Patent Database is a searchable database for PCT, European, and WIPO publications

Invention Scams a United Inventors Association site describing invention scams and how to avoid them

Japanese Patent Office has general information

Kentucky Highlands Investment Corporation provides financing and technical assistance to start-up companies

PCT National Stage Deadlines

United Kingdom Patent Office has forms and general information

U.S. Copyright Office has forms, information, and enables you to search the U.S. copyright records

U.S. Patent and Trademark Office (PTO) has information about patents, trademarks, forms, and enables you to search U.S. patents and trademarks

University of Wisconsin Innovation Service Center provides market research at reasonable prices

Venture Club of Louisville provides a forum for people to present to potential investors

WIN Innovation Center (formerly Walmart Innovation Network) provides market research

www.totallyabsurd.com a site that lists crazy patents