(a) An appeal from a final decision made by the Director under § 301.5(f) may be taken in accordance with U.S. Note 6(e), Subchapter X, Chapter 98, HTSUS, only to the U.S. Court of Appeals for the Federal Circuit and only on questions of law, within 20 days after publication of the decision in the FEDERAL REGISTER. If at any time while its application is under consideration by the Court of Appeals on an appeal from a finding by the Director an institution cancels an order for the instrument to which the application relates or ceases to have a firm intention to order such instrument, the institution shall promptly notify the court.(b) An appeal may be taken by:(1) The institution which makes the application;(2) A person who, in the proceeding which led to the decision, timely represented to the Secretary of Commerce in writing that he/she manufactures in the United States an instrument of equivalent scientific value for the purposes for which the instrument to which the application relates is intended to be used;(3) The importer of the instrument, if the instrument to which the application relates has been entered at the time the appeal is taken; or(4) An agent of any of the foregoing.(c) Questions regarding appeal procedures should be addressed directly to the U.S. Court of Appeals for the Federal Circuit, Clerk's Office, Washington, DC 20439.47 FR 32517, July 28, 1982, as amended at 66 FR 28834 , May 25, 2001