!%Caliper Life Sciences Inc.%! of Hopkinton, Mass., and its wholly owned subsidiary Xenogen Corp. have announced the filing of a patent infringement lawsuit in the US District Court for the Eastern District of Texas. The two companies seek a finding of willful infringement by Carestream Health Inc. of Rochester, N.Y., along with compensatory damages, a trebling due to willfulness, a permanent injunction and attorneys’ fees, for the ongoing, unauthorized and willful use of a number of patents that Caliper, through Xenogen, exclusively licenses from Stanford University.