(a) If the renewal application is filed within the time periods set forth in section 9(a) of the Act, deficiencies may be corrected after notification from the Office, as follows:

(1) Correcting deficiencies in renewal applications filed within one year before the expiration date of the registration. If the renewal application is filed within one year before the expiration date of the registration, deficiencies may be corrected before the expiration date of the registration without paying a deficiency surcharge. Deficiencies may be corrected after the expiration date of the registration with payment of the deficiency surcharge required by section 9(a) of the Act and § 2.6.

(2) Correcting deficiencies in renewal applications filed during the grace period. If the renewal application is filed during the six-month grace period, deficiencies may be corrected before the expiration of the grace period without paying a deficiency surcharge. Deficiencies may be corrected after the expiration of the grace period with payment of the deficiency surcharge required by section 9(a) of the Act and § 2.6.

(b) If the renewal application is not filed within the time periods set forth in section 9(a) of the Act, the registration will expire. This deficiency cannot be cured.