Well there is one thing which concerns me. And that is this Carl Icahn character talking about Motorola selling its IP. Even though I believe it is inferior to IDCC's IP, Google could use it as a ruse to talk IDCC down, by saying that they might consider buying MOT if IDCC doesn't come in with as good price.
Idcc patents are mostly for 4g phones. Goog wants to be ahead which is why goog approached idcc. This is why it's hard to put a face value to their patents. One thing for sure is their patents are worth more than motorila and nortel.