MPEP § fp14.21.01
The amendment filed [1] proposes amendments to [2] that do not comply with 37 CFR 1.173(b), which sets forth the manner of making amendments in reissue applications. A supplemental paper correctly amending the reissue application is required.
A shortened statutory period for reply to this letter is set to expire TWO MONTHS from the mailing date of this letter.
1. This form paragraph may be used for any 37 CFR 1.173(b) informality as to an amendment submitted in a reissue application prior to final rejection. After final rejection, applicant should be informed that the amendment will not be entered by way of an Advisory Office action.
2. In bracket 2, specify the proposed amendments that are not in compliance.