- An excellent introduction to patenting published by the American Chemical Society
- On Patents – Partners HealthCare
- ipHandbook
- Patent Guide by TIME IS (a pretty useful site- with links to patent acts, patent offices, guides, background info etc.)
- IPFACE (they have a good resource page - particularly like their Guide to Online Resources)
- Google patents - all US patents can be searched and downloaded
- Indian Patents Search
- USPTO - US Patent and Trademark Office
- WIPO - World Intellectual Property Organization