How do I correct an error in a recorded assignment document?

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.

To correct an error in a recorded assignment document, you need to submit a ‘corrective document’ to the Assignment Division. This document should include:

1. A copy of the original assignment document with corrections made, initialed, and dated by the party conveying the interest.
2. A new Recordation Form Cover Sheet (form PTO-1595) identifying the submission as a ‘corrective document’ and indicating the reel and frame number of the incorrectly recorded assignment.

The corrective document will be given a new reel and frame number and recording date. A recording fee is required for each patent application and patent affected.

As stated in the MPEP: “The recording fee set forth in 37 CFR 1.21(h) is required for each patent application and patent against which the corrective document is being recorded.” (MPEP § 323)