(a) Upon request by the Office, the owner shall replenish the seed or propagating material of the variety and shall pay the handling fee for replenishment. Samples of seed or propagating material related to abandoned applications or certificates will be retained or destroyed by the depository. Failure to replenish seed or propagating material within 3 months from the date of request shall result in the certificate being regarded as abandoned. No sooner than 1 year after the date of such request, notices of abandoned certificates shall be published on the Plant Variety Protection Office website (https://www.ams.usda.gov/PVPO), indicating that the variety has become open for use by the public and, if previously specified to be sold by variety name as “certified seed only,” that such restriction no longer applies.

(b) If the seed or propagating material is submitted within 9 months of the final due date, it may be accepted by the Commissioner as though no abandonment had occurred. For good cause, the Commissioner may extend for a reasonable time the period for submitting seed or propagating material before declaring the certificate abandoned.

(c) A certificate may be voluntarily abandoned by the applicant or his or her attorney or agent of record or the assignee of record by notifying the Commissioner in writing. Upon receipt of such notice, the Commissioner shall publish a notice on the Plant Variety Protection Office website (https://www.ams.usda.gov/PVPO) that the variety has become open for use by the public, and if previously specified to be sold by variety name as “certified seed only,” that such restriction no longer applies.