Website for Patent Search
| # | Search Engine/Database | URL |
|---|---|---|
| Government Organizations (Freely Available) | ||
| 1 | USPTO (United States Patent and Trademark Office) | http://patft.uspto.gov/ |
| 2 | EspaceNet (EPO; European Patent Office) | http://www.epo.org/searching/free/espacenet.html |
| 3 | Japan Patents (IPDL; Industrial Property Digital Library) | http://www.ipdl.inpit.go.jp/homepg_e.ipdl |
| 4 | Indian Patent Information Retrieval System (Indian Patent and Design Office) | http://ipindia.nic.in/ |
| 5 | PatentScope (WIPO; World Intellectual Property Organization) | http://patentscope.wipo.int/search/en/search.jsf |
| Open Access | ||
| 6 | Patent Lens | http://www.patentlens.net/patentlens/structured.html |
| 7 | Google Patent Database | https://www.google.com/?tbm=pts |
| 8 | Free Patents Online | http://www.freepatentsonline.com/search.html |
| 9 | IP.com Intellectual Property Library | http://ip.com/ |
| 10 | Fresh Patents | http://freshpatents.com |