What are reissue applications according to MPEP 201.01?

MPEP 201.01 briefly mentions reissue applications as one of the types of national applications. Specifically, it states:

‘National applications include original applications and reissue applications (filed under 35 U.S.C. 251).’

Reissue applications are a specialized type of patent application used to correct errors in an already issued patent. They are governed by 35 U.S.C. 251, which allows a patentee to apply for a reissue of their patent if it is deemed to be wholly or partly inoperative or invalid due to certain types of errors.

For more detailed information on reissue applications, refer to MPEP 1400 – Correction of Patents.

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

For more information on Patent errors, visit: Patent errors.

For more information on reissue applications, visit: reissue applications.