According to a filing at the U.S. Patent and Trademark Office, Amazon (AMZN -0.16%) could be gearing up to launch an anonymous mobile payment network. Not only would this move take direct aim at eBay's (EBAY -0.40%) PayPal unit, it could potentially threaten Google (GOOGL 1.06%) as well. In this video, Motley Fool contributor Steve Heller weighs in on the filing and what other plans Amazon may have up its sleeve.