What better way to bolster smartphone competition then to file a suit of patent infringement. The smartphones business has become such a “dog eats dog” competition that new innovations are closely in check between rivals. In the latest saga Microsoft has filed a lawsuit with the International Trade Commission (ITC) in the U.S. District Court, Western District of Washington against Motorola.

According to Microsoft, Motorola has violated nine patents in its droid based smartphones- Droid, Droid X and Droid 2. In a press statement the areas of violation include, “synchronizing email, calendars and contacts, scheduling meetings, and notifying applications of changes in signal strength and battery power.”

In light of the news HTC has however has been in a contract with Microsoft to pay royalties for use of Microsoft patent. The contract enables HTC to use Microsoft’s software at the same time paying a royalty fees. This is where the issue with Motorola departs, as Microsoft seeks Motorola to pay a royalty fees for the technology (related to Microsoft products) used in the Droid range of smartphones.

Patent infringements simply never stop popping up now and then. A couple of months back Oracle filed for law suit against Google based on violation of intellectual software regarding Java. As the competition of smartphones heats up there might be more patent infringements coming in.