A Massachusetts district court has ruled in favor of Amazon in a suit initiated by Lexington Luminance. Lexington sued Amazon in November 2012 for alleged infringement of a patent related to the fabrication of semiconductor devices (6,936,851). The complaint accused Amazon’s e-reader devices and tablet computers, including the Kindle Fire, of infringing the ‘851 patent. Amazon’s answer included a counterclaim for a declaratory judgment of invalidity, and in August 2013, Amazon filed a motion for judgment on the pleadings. Following same-day hearings on claim constructions and Amazon’s motion, the court found claim 1 of ‘851 to be indefinite. This week Judge Denise Casper entered a judgment in Amazon’s favor and dismissed Lexington’s complaint.