 On April 14, 1999, the U.S. Court of Appeals for the Federal Circuit found that the claimed subject matter was properly within the statutory scope of , and reversed the district court's judgment of invalidity on this ground and remanded the case for further proceedings.The U.S. Patent No.5,333,184 (or the '184 patent), entitled 'Message Recording for Telephone Systems', described a method to take advantage of adding more data into a message record in order to provide appropriate billing for subscribers, based on whether or not the subscriber and call recipient subscribe to the same long-distance carrier.