Apple came out unscathed from a legal battle involving digital rights management IP owned by ContentGuard, a subsidiary of non-practicing entity Pendrell Corp. that sued the iPhone maker for infringing on five patents. The jury handed down its decision in the U.S. District Court for the Eastern District of Texas on Friday, finding Apple not in infringement of five DRM-related patents owned by ContentGuard, reports Reuters. While not responsible for damages, Apple was not able to prove the patents-in-suit invalid. Apple was accused of illegally applying patented DRM technologies to its digital content distribution services, including music, movies and TV...