37 CFR §41.63

1. (a)Amendments filed after the date of filing an appeal pursuant to § 41.61 canceling claims may be admitted where such cancellation does not affect the scope of any other pending claim in the proceeding.
2. (b)All other amendments filed after the date of filing an appeal pursuant to § 41.61 will not be admitted except as permitted by § 41.77(b)(1).
3. (c)Affidavits or other evidence filed after the date of filing an appeal pursuant to § 41.61 will not be admitted except as permitted by reopening prosecution under § 41.77(b)(1).