DETROIT, Aug. 27 /PRNewswire-FirstCall/ -- Caraco Pharmaceutical Laboratories, Ltd. (NYSE Amex: CPD) announced today that a US Federal Circuit Court has reversed a portion of a previously decided summary judgment on ANDA Patent litigation between Ortho McNeil and Caraco regarding Ultracet(R). The court has remanded the litigation to a lower court for further proceedings. The court did find that a portion of the patent was not valid. Caraco believes in the merits of its case and is evaluating its further options.