Xerox has won its software patent-infringement lawsuit against handheld-maker Palm, casting doubts on Palm's future. (Xerox originally sued 3Com in 1997; 3Com owned Palm at the time.) The software, which Palm uses in every device it has ever sold, lets users enter text by using a stylus and quick one-stroke motions. What's next for the companies? The courts will decide whether Palm can continue using the software and will address the issue of damages, which will be the sticking point for financially struggling Palm.