The patent problems currently being faced, 2 articles describing the current problem of patent trolls

http://venturebeat.com/2013/06/20/a-29-billion-industry-based-on-threats-its-time-for-patent-trolls-to-face-the-consequences/

http://gregpiccionelli.com/index.php?option=com_content&view=article&id=174:another-patent-troll-attacks-the-business-and-it-s-vs-media-to-the-rescue-again&catid=87&Itemid=1258