American company, Lodsys, sued the makers of Angry Birds, Roivo, for supposedly violating its patents. Angry birds allowed the users to purchase new levels inside its mobile applications. The Finnish games company thus was under fire from the Texan company for violating patent.
This issue has prevented several European games developers launching their application.
According to a website The US patent systems differs from European union, although the European parliament has taken line up for patent rights in US. There has a rapid growth on patent suits in US. This has raised a major threat to the burgeoning mobile application market.
The lawsuits have made European developers to think whether their applications should run in US or not.

Report by Kushal Kumar