Patent Search Web Sites
There are several patent search web sites. Click on these links you'll go directly to the search page.
| Prior Art Search Site | Content |
| US Patent Office | Search all issued patents |
| US Patent Office | Search pending US patent applications |
| European Patent Office | Search patents worldwide with one click |
| IP Search Engine | Fee based and thorough. Used by most major corporations. |
Delphion and Surf IP are now by subscription only. If you want to speed up your searching and have the ability to save searches and patent copies, plus generate reports, PatentHunter, with it's unlimited customer service, is by far the better choice.