Microsoft has been talking smack to Google (NASDAQ: GOOG) of late, charging the search giant's Android operating system isn't as "free" as the company says it is and hinting that Android could end up entangled in a patent infringement lawsuit. But talk is cheap. On Friday, Microsoft (NASDAQ: MSFT) took a much bolder step, suing Motorola (NYSE: MOT) for allegedly infringing nine of the software titan's patents in its Droid mobile handsets, which are powered by Android. "Microsoft filed an action today in the International Trade Commission and in the U.S. District Court for the Western District of Washington against...