WASHINGTON - The US Patent and Trademark Office (USPTO) is streamlining the overall assignment search experience by replacing two legacy search applications—Patent Assignment Search and Assignments on the Web—with one, more reliable, secure, and easy to use Assignment Search application, according to the official website of USPTO.

Starting on September 27, 2025, Assignment Search will be live, and the two legacy systems will cease to be available.

This new, web-based application provides customers seeking patent and trademark assignment information with reliable, detailed results via a modernized interface. Customers can perform basic searches and refine their searches using the filtering options available in the “advanced search” field of the tool. 

To improve the customer experience, all previous assignment services will be centrally located in Assignment Center. The new Assignment Search application can be found in Assignment Center on September 27, 2025.