(y) Except as otherwise permitted in the Loan Documents, such Grantor shall maintain the security interest created by this Agreement as a perfected security interest having at least the priority described in Section 4.2 and shall use commercially reasonable efforts defend such security interest against the material claims and demands of all Persons whomsoever, subject to the rights of such Grantor under the Loan Documents to Dispose of the Collateral.
maintenance of perfected security interests