Welcome to the new DialogClassic Web. The product designed especially for professional researchers. Find out more about DialogClassic Web, the world's most comprehensive online information source.

Order Patent and Trademark File Histories Through Dialog

Thomson File Histories are now available directly through Dialog. Combined with the comprehensive patent and trademark information on Dialog, file histories give you the most complete view of a patent or trademark and its history in one place. Find out more..>

For your convenience, we will provide access to the previous version of DialogClassic Web for a limited period of time.