Me. Rev. Stat. tit. 35-A, § 9214

The authority may not establish or collect a franchise fee pursuant to 47 United States Code, Section 542 or Title 30‑A, section 3008. If any tax, fee, charge or assessment or portion thereof established by the authority is held by a court of competent jurisdiction to be a franchise fee, the imposition of that tax, fee, charge or assessment or portion thereof is unenforceable.