Microsoft Corp. convinced a federal appeals court that it shouldn't have to pay $1.5 billion in damages to Alcatel-Lucent SA, after a lower court threw out the jury's record verdict over the MP3 digital-music standard. The U.S. Court of Appeals for the Federal Circuit affirmed the lower court's decision that one of the two patents wasn't infringed and that Microsoft, the world's biggest software maker, had a valid license for the second one.