CAD pioneer slaps competitor with lawsuit

R2 Technology has filed a patent infringement lawsuit against Intelligent Systems Software, which makes software for computer-aided detection. ISS has denied the alleged infringement. R2's formal complaint, filed June 3 in the U.S. District Court for the District of Delaware, charges ISSI with infringing three patents that address the scanning, processing, and display of images. R2 owns or has rights to more than 85 U.S. patents and patent applications, which company executives say they will vigorously protect against any form of infringement.