Cinemark, Imax Sue over XD

Cinemark USA and Imax Corporation have filed lawsuits against each other over Cinemark’s XD digital theaters. Cinemark, the third largest theater chain in the U.S., filed a suit on November 4 seeking to invalidate two patents Imax holds on “Conversion of a Cinema Theater to a Super Cinema Theater”. Imax countered on November 12 with a complaint that alleges fraud, breach of contract, misappropriation of trade secrets, and tortious interference, and seeks an injunction to prevent Cinemark from “producing, using, and selling its XD system”?