He sued National Geographic for copyright infringement based on its release of the CNG. Originally, the Eleventh Circuit found for Greenberg, stating that the introductory material and the computer program itself at least infringed his copyrights in his photographs. The court also assumed, without deciding, that the privilege afforded under 17 U.S.C. § 201(c) for revision of collective works applied to the reproduction of the actual magazines on the CD-ROMs.