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.