7 CFR §97.23

1. (a)An application may be voluntarily withdrawn or abandoned by submitting to the Office a written request for withdrawal or abandonment, signed by the applicant or his or her attorney or agent of record, if any, or the assignee of record, if any.
2. (b)An application which has been voluntarily abandoned may be revived within 3 months of such abandonment by the payment of the prescribed fee and a showing that the abandonment occurred without fraudulent intent.
3. (c)An original application which has been voluntarily withdrawn shall be returned to the applicant and may be reconsidered only by refiling and payment of new filing and examination fees.