Seen it reported a few times, Apple has pending suits against almost every android phone manufacturer. They will keep these lawsuits up because their big rival from the past (Microsoft) has made more money from HTC android phones than WP7, if Apple can get their competition to pay licensing fees for each phone sold they will do even better and they know it.
These lawsuits would have never seen court in the past, do you ever recall Ford being sued by GM because they were making cars with 4 wheels and running on gasoline but GM was making them first? That is the basically what these lawsuits are about. The two offending patents are one that automatically makes phone #s, websites, and email address links in text messages, and another involving real time processing of audio and video.