How can I access patent assignment records online?

Patent assignment records can be accessed online through the USPTO’s Assignment Search database. The MPEP states: Assignment records that affect the title of patents and patent applications are recorded in the USPTO’s Assignment Recordation Branch. To access these records:

• Visit the USPTO Assignment Search website
• Enter the relevant patent or application number, assignee name, or other search criteria
• Review the search results for assignment information

This online database provides public access to assignment records, allowing for easy verification of patent ownership.