Each of the Consolidated Companies have filed or caused to be filed all declarations, reports and tax returns which are required to have been filed, and has paid all taxes, custom duties, levies, charges and similar contributions (“taxes” in this Section 6.12 ) shown to be due and payable on said returns or on any assessments made against it or its properties, and all other taxes, fees or other charges imposed on it or any of its properties by any governmental authority (other than those the amount or validity of which is currently being contested in good faith by appropriate proceedings and with respect to which reserves in conformity with GAAP have been provided in its books); and to the knowledge of the Borrowers, no tax liens have been filed and no claims are being asserted with respect to any such taxes, fees or other charges.