According to a filing at the U.S. Patent and Trademark Office, Amazon (AMZN +4.98%) could be gearing up to launch an anonymous mobile payment network. Not only would this move take direct aim at eBay's (EBAY +0.16%) PayPal unit, it could potentially threaten Google (GOOG +1.05%) 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.