The patent system was formed in order to foster innovation but, unsurprisingly, some enterprising people have been able to turn it into a business. To be more specific, some have the business of suing others for patents they never created or never use. Yes, these are the patent trolls that threaten even giants like Google, Apple, Samsung, and Microsoft. In order to protect its often-targeted platform, Google has formed the "Android Networked Cross-License Agreement" with its hardware partners. And to give it a catchier name, Google is calling it "PAX", the Latin word for "peace".