In this chapter—
((1)) the term “claimant” means the real party in interest that commences a proceeding before the Copyright Claims Board under section 1506(e), pursuant to a permissible claim of infringement brought under section 1504(c)(1), noninfringement brought under section 1504(c)(2), or misrepresentation brought under section 1504(c)(3);
((2)) the term “counterclaimant” means a respondent in a proceeding before the Copyright Claims Board that—
((A)) asserts a permissible counterclaim under section 1504(c)(4) against the claimant in the proceeding; and
((B)) is the real party in interest with respect to the counterclaim described in subparagraph (A);
((3)) the term “party”—
((A)) means a party; and
((B)) includes the attorney of a party, as applicable; and
((4)) the term “respondent” means any person against whom a proceeding is brought before the Copyright Claims Board under section 1506(e), pursuant to a permissible claim of infringement brought under section 1504(c)(1), noninfringement brought under section 1504(c)(2), or misrepresentation brought under section 1504(c)(3).