What is the difference between a ‘corrective document’ and a ‘substitute statement’ for USPTO assignments?

The key differences between a ‘corrective document’ and a ‘substitute statement’ for USPTO assignments are:

• Corrective Document: Used to fix minor errors in the original recorded document.
• Substitute Statement: Replaces the entire original document when substantial changes are needed.

According to MPEP 323: “Where errors were made in the execution of the original assignment document … a ‘substitute statement’ may be submitted for recordation.” The MPEP further clarifies: “The substitute statement must be accompanied by a copy of the originally recorded papers.”

For more information on assignment correction, visit: assignment correction.

For more information on substitute statement, visit: substitute statement.

For more information on USPTO, visit: USPTO.