MPEP § 1481.01
The Fee(s) Transmittal Form portion (PTOL-85B) of the Notice of Allowance provides a space (item 3) for assignment data which should be completed in order to comply with 37 CFR 3.81. Unless an assignee’s name and address are identified in the appropriate space for specifying the assignee, (i.e., item 3 of the Fee(s) Transmittal Form PTOL-85B), the patent will issue to the applicant. Providing assignee information on the form PTOL-85B will result in identification of the assignee in the assignee field of the issued patent, but will not affect any change in the applicant of record. If the assignee is not the applicant of record, then an appropriate request under 37 CFR 1.46(c) must be filed before or with the payment of the issue fee for the patent to reflect the assignee as both the applicant and the assignee. Assignment data printed on the patent will be based solely on the information supplied with the form PTOL-85B (or its equivalent) on the date that the issue fee is paid. Assignment information submitted after issue fee payment will not be printed on the patent.
Any request for the issuance of an application in the name of the assignee submitted after the date of payment of the issue fee, and any request for a patent to be corrected to state the name of the assignee must:
See 37 CFR 3.81(b).
Request to add or change the assignee information which does not comply with 37 CFR 3.81(b) will not be granted. Mistakenly adding assignee information on the form PTOL-85B is not a type of error correctable via certificate of correction.