Thanks sjratty:
I now see how NOK may attempt to argue that the patents between IDCC/ERICY do not cover the patents of IDCC/NOK. Thus, why should NOK be bound by that agreement especially when there exist no trigger. I agree, that is a leap and not a strong argument although it's possible.
As for collusion, it's kinda like a conspiracy, "why are they colluding and how do you prove collusion?". That would be very difficult unless you have testimony which I doubt you'll get or you can somehow proved it happened by following the documents. Again, weak IMO.
As far the third agrument, I agree, that is probably the strongest although I would be much happier to just see NOK's whole argument and/or WITCH HUNT turn to MUSH!