Can I file Section 15 affidavits or declarations while a registration is involved in a Board proceeding? faq 4 years ago No. See 15 U.S.C. § 1065 and TMEP § 1605. Related posts: Am I required to continue filing Section 8 affidavits or declarations if my registration is involved in a cancellation proceeding? Section 15 Declaration of Incontestability Am I required to file a §15 Declaration? What is an “incontestable” registration?