Nokia claims that it has patent deals with about 40 other companies in the business for these exact same set of patents, which should add some weight to the Finnish phone maker's claim. Nokia also states that it has made various offers to Apple about these patents, but that the Cupertino company rejected them all.
Still, with Nokia bleeding marketshare in the smartphone business to Apple's iPhone, it does come across a little bit as "If you can't beat them, sue them".
In its SEC 10-K annual report filing, Apple has responded to Nokia's claims. Even though the response to the claim is not yet due, Apple does state it does not intend to let this one go by.
Well, this could turn out to be another long legal battle. Now, as you can see in the filing, a company of Apple's size is involved in a lot of lawsuits - but a big one like this, between two heavyweights? Better get out the popcorn.