HUDSON, N.H., Sept. 17 Presstek, Inc., a leading provider of direct digital imaging technology, today announced that it had received and studied the Delaware District Court's decision in its patent dispute with Creo Products concerning two of Presstek's on-press imaging patents. The decision was initially released on September 11, 2001. In its decision, the Court affirmed the validity and enforceability of the Presstek on-press imaging patents, but held that the current Creo DOP System did not infringe the Presstek patents. Presstek disagrees with the Court's conclusion on infringement. Presstek has been advised that Creo has appealed the Court's decision that the patents are valid and enforceable. Presstek intends to cross-appeal to seek a holding of infringement by the current Creo DOP System. Presstek's president and chief executive officer, Robert Hallman, said, "We are pleased that the Court affirmed the validity and enforceability of these patents. With respect to its conclusion of non-infringement, however, we believe the Court relied on minor differences between the Presstek patents and Creo's DOP System that do not justify the Court's determination of non- infringement. As a result, will be seeking review of that determination in the Court of Appeals.''