United States Patent and Trademark Office http://www.uspto.gov/ The official website provides comprehensive information about patents and trademarks, including fees and application instructions. The USPTO also maintains an extensive set of FAQs: FAQS on the USPTO Website http://www.uspto.gov/web/patents/faqs.htm
Inventor Resources and Information - U.S. Patent and Trademark Office
http://www.uspto.gov/web/offices/com/iip/index.htm
This section of the USPTO website is designed specifically for independent inventors.
Patent Electronic Business Center - U.S. Patent and Trademark Office http://www.uspto.gov/ebc/index.html
Information about conducting business online with the U.S. Patent & Trademark Office. Includes information about filing for patents online, checking status, filing assignments and searching. Provides links to FAQs about EFS-Web, the electronic patent filing system, and PAIR, the Patent Application Information retrieval system.
Trademark Electronic Business Center - U.S. Patent and Trademark Office http://www.uspto.gov/ebc/index_tm.html
Information about conducting business online with the U.S. Patent & Trademark Office. Includes information about filing for trademarks online, checking status, viewing trademark application documents, searching trademarks and filing assignments and other documents. Provides links to FAQs, search tips, fee information and more.
Wex - Intellectual Property: Legal Information Institute (LII), Cornell University Law School
http://topics.law.cornell.edu/wex/intellectual_property Wex is a free legal dictionary and encyclopedia. Wex is a collaborative public access law resource sponsored by the Cornell Law school. The Intellectual Property section of Wex contains articles about patents, copyrights, trademarks and other intellectual property issues.