and (B) shall be diligently enforced by Certegy. (b) The sublicense rights granted to Certegy pursuant to Section 4.1(a) include the right for Certegy to grant sublicenses to the Licensed Equifax Materials (excluding the Utility Software Programs) to the members of the Certegy Group, which sublicenses may include the right to further sublicense such Licensed Equifax Materials (excluding the Utility Software Programs) to such Group member's customers solely for each such customer's internal business purposes to the extent related to the Certegy Business. All sublicensing by Certegy and other members of the Certegy Group to any one of their customers shall be pursuant to written agreements with such customer, executed before or at the time of furnishing each copy of the Licensed Equifax Materials (excluding the Utility Software Programs) to such customer, and which provide at a minimum that such customer: (i) receives only a personal, non-transferable and nonexclusive right to use such copy of the Licensed Equifax Materials (excluding the Utility Software Programs); (ii) receives no title in the intellectual property contained in the Licensed Equifax Materials (excluding the Utility Software Programs); (iii) will not copy the Licensed Equifax Materials (excluding the Utility Software Programs), except as necessary to use such Licensed Equifax Materials (excluding the Utility Software Programs) in accordance with the license grant and to make one archival copy; (iv) will not export or re-export the Licensed Equifax Materials (excluding the Utility Software Programs) without the appropriate United States or foreign government licenses; (v) will hold the Licensed Equifax Materials (excluding the Utility Software Programs) in confidence; will not reverse compile or disassemble the Licensed Equifax Materials (excluding the Utility 12 Software Programs); will not remove or destroy any proprietary markings of the licensor on or contained in the Licensed Equifax Materials (excluding the Utility Software Programs),