40 CFR § 710.47
When to submit substantiation or information on previous substantiation
June 9, 2020
(a) All persons required to substantiate a confidentiality claim pursuant to §710.43(a) or (b)(1) must submit their substantiation not later than November 1, 2020.
(b) All persons who seek an exemption under §710.43(b)(2) must submit the information specified in §710.43(b)(2)(ii) not later than November 1, 2020.