See Patent Information Tour from European Patent Office
World Intellectual Property Organization (WIPO) http://www.wipo.int/portal/index.html.en
The page contains the full text of all the treaties administered by WIPO with information on the countries which have ratified them. Also accessible are press releases from 1997 onwards, WIPO standards and a catalogue of publications. Additionally access is offered to WIPO industrial property statistics
Free Patents Online http://www.freepatentsonline.com/
Access to a database of freely available full text patent records. The database currently holds all patents published by the United States Patent and Trademark Office (USPTO) since December 1976.These can be searched by keyword or browsed by patent number.
European Patent Office http://www.european-patent-office.org/index.en.php
This site includes news, information about courses and seminars, and Patent information of all 18-member states of the European Patent Organization
There are more than 46 million patent links from five patent offices:
1. World Intellectual Property Organization (WIPO)
2. European Patent Office
3. US Patent Office
4. Japanese Patent Office
5. UK Intellectual Property Office
Includes 28 million patents from 40 patent-issuing authorities.
