This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.
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.