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USPTO Systems Status and Availability

Check this page for the latest information on operating status and availability of Online Business Systems. For Standard Hours of Availability for Online Business Systems, System Descriptions, and Operating Requirements/Compatibilities, see the links at left.

Current Status

Monday Dec 22, 2014

New Patent Assignment Search Deployment

The USPTO has successfully deployed Assignment Search, a new patent assignment search system. Assignment Search is available at The USPTO also has plans to incorporate trademark assignments search into the Assignment Search system in the near future.

In addition to launching the new system, as part of this deployment, the following changes have been made to Assignments on the Web (AOTW):

  • The AOTW homepage is now redirecting users to, and will remain at this location until both patents and trademarks are fully included in the new Assignment Search system.
  • The current link to the AOTW Patent Assignment Query is now redirecting users to the new patents assignment search system. The link can be found on the new tool’s homepage.
  • At this time, users can still search for patent assignments through AOTW.

Planned Events

Saturday Dec 20, 2014

Planned Events

There are no planned events.

United States Patent and Trademark Office
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