required by Certegy, has entered into a license agreement with the appropriate member of the Certegy Group incorporating the terms of Section 4.4 and Section 4.5 and such other terms as Certegy reasonably deems appropriate for the protection of its interests in the Licensed Certegy Materials. (e) Without limiting the foregoing, Certegy hereby grants, and will cause the other members of the Certegy Group to grant, to Equifax a fully paid, non- exclusive, perpetual, worldwide, transferable license to use, modify, improve, create Derivative Works from, and sublicense, the Utility Software Programs (in both object and source code format) identified on Exhibit L as being owned by Certegy or a member of the Certegy Group for any and all fields of use and to any and all Persons. (f) The Licensed Certegy Materials may be marketed under such name and in such manner as Equifax chooses, consistent with the terms and conditions of this Agreement. (g) Except for the Equifax Group's rights described in Section 4.4(a), (b) and (e) above, the Certegy Group's rights in and to the Licensed Certegy Materials shall be and remain the exclusive property of Certegy or the respective Designated Certegy Member. Section 4.5. Ownership of Enhancements by Equifax. (a) Unless Exhibit K provides otherwise, Equifax, or the respective Designated Equifax Member, shall own all the modifications and improvements to, and the Equifax Enhancements and/or Derivative Works made from, the Licensed Certegy Materials developed by any member of the Equifax Group, or by any party other than a member of the Certegy Group at the expense of the Equifax Group. Certegy hereby assigns, and shall cause each member of the Certegy Group to assign, to Equifax, or the respective Designated Equifax Member, all right, title and interest it may hold in and to such modifications, improvements, Equifax