They are a patent holding firm which was formed by the creator of the PDA. Basically a patent holding firm does nothing but file patents so it can eventually sue a large company for using them. It's such a shame but it's done all over. What's even worse is it was filed in the district of Texas where all the stupid lawsuits are basically won (think McDonalds and hot coffee).
I was not that impressed with Visual Voice Mail...why you ask.
I had been using it for 6 months previously with my skype phone.
Listening to Voicemails in order and having to hit 7, 9, 2, 1 etc to navigate just seems annoying now.
The two patents that Klausner is saying were voilated both state that their "device" is "A telephone answering device coupled to a telephone line for automatically answering incoming telephone calls and storing and retrieving information from the incoming telephone calls"
Maybe the fact that the iPhone is not coupled to a telephone line may be enough to get it ruled out. But then again pouring hot coffee in your own lap should be a sign of stupidity and not a flaw in McDonald's coffee heating process and the court saw that backwards too.
Most companies who file these suits do so only because they know it's cheaper for Apple to settle out of court than to pay lawyer fees. That's the reason most of these companies do this. It's a shame but it's the truth. I wouldn't be surprised to see Apple settle out of court just to avoid having to deal with it.
Hate to tell you guys but there are already precedents for this particular lawsuit by Klausner that have already gone in their favor. Apple may fight, but they're going to have a tough time when Klausner has already won this battle in the past for the same exact infringement.