What fees are required when correcting an erroneous assignment or name change?

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.

When correcting an erroneous assignment or name change, you must pay the required fee for each application or patent affected. According to MPEP 323.01(c):

The required fee ( 37 CFR 3.41 ) for each application or patent to be corrected.

The specific fee amount can be found in the current USPTO fee schedule. It’s important to note that a separate fee is required for each application or patent that needs correction, even if they are related to the same erroneous assignment.