Maine StatutesChapter 144: PAYMENT OF INVOICES RECEIVED FROM BUSINESS CONCERNS5 §1551. Purpose5 §1552. Definitions5 §1553. Standards5 §1554. Payment of late fees5 §1555. Period of time for which late fees are imposed5 §1556. Source of payment for late fees5 §1557. Late fees and improper invoices5 §1558. Annual report