claimant
The term “claimant” means a person or class, that has brought, or on whose behalf has been brought, a civil action alleging a violation of section 1 or 3 of this title or any similar State law, except that the term does not include a State or a subdivision of a State with respect to a civil action brought to recover damages sustained by the State or subdivision.
Source
15 USC § 7a(4)
Scoping language
None identified, default scope is assumed to be the parent (chapter 1) of this section.