1606.13(b) Correcting Deficiencies in Renewal Applications Filed During the Grace Period
If the renewal application is filed during the grace period, deficiencies may be corrected before the expiration of the grace period without paying a deficiency surcharge, or after the expiration of the grace period with the deficiency surcharge required by §9(a) of the Act. 37 C.F.R. §2.185(a)(2).
Deficiencies must be cured within six months of the issuance date of the Office action. 37 C.F.R. §2.184(b). See TMEP §1606.12 .