How patent hoarding can be used to generate revenue.
The Sharks Are Circling- Microsoft, Oracle Target Android Manufacturers – HotHardware
“handset manufacturer pays Microsoft $5 per Android product.”
Here’s how Microsoft games the patent system to get Android licensing fees – Computerworld Blogs
“Is this good business for Microsoft? It certainly is. It appears that Microsoft now makes far more money from patent fees for the use of Android than it does from Windows Phone 7.”