19 C.F.R. § 176.2 Service of notice of appeal.
Title 19 - Customs Duties
When the United States is an appellee in an appeal taken to the Court of Appeals for the Federal Circuit, a copy of the notice of appeal shall be served upon the Assistant Chief Counsel for Court of International Trade Litigation. (28 U.S.C. 2601, as amended) [T.D. 70–181, 35 FR 13433, Aug. 22, 1970, as amended by T.D. 85–90, 50 FR 21430, May 24, 1985]
Title 19: Customs Duties
PART 176—PROCEEDINGS IN THE COURT OF INTERNATIONAL TRADE
Subpart A—Service
§ 176.2 Service of notice of appeal.

