37 CFR §1.312
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
No amendment may be made as a matter of right in an application after the mailing of the notice of allowance. Any amendment filed pursuant to this section must be filed before or with the payment of the issue fee, and may be entered on the recommendation of the primary examiner, approved by the Director, without withdrawing the application from issue.