Apple today filed a countersuit against Nokia for patent infringement as a response to the lawsuit Nokia filed against Apple back in October. The countersuit is over the 13 patents that cover many different communication technologies that are used in the iPhone, which Nokia clams to hold the patents. These patents cover the GSM, UTMS 3G, and Wireless-LAN standards used in the iPhone since early 2007.
Bruce Sewell, General Counsel and senior vice president for Apple stated: "Other companies must compete with us by inventing their own technologies, not just by stealing ours."
We'll post any more details on these lawsuits as this develops, so stay posted.
Update #1: Engadget's Nilay Patel has, of course, pointed out some interesting things. Notably: while this is about patent infringement, the majority of claims are around some insane licensing terms Nokia felt it was entitled to. Read his post for the breakdown and a PDF of the paperwork.