Remember that notorious Lodsys company that threatened to sue small iOS developers in order to have them pay license fees for the in-app purchase button? There is a new twist to that story. It turns out that Apple filed a patent for the in-app purchases more than a year and a half ago. If Apple is successful and is granted rights to the patent, something interesting can happen. The patent can be used to extort license fees from the Android and Windows Phone eco-systems. Given the crazy patent war between Apple and Samsung, which by the way Apple started, we can expect anything.
Here is some really fascinating reading about patent trolls, which sheds some light on Lodsys and its siblings.