IMO groklaw.net is the best place to read about the history of this case and the current goings-on at the trial including play-by-play reporting by volunteers. Addressing the patent question, my understanding is that most of the patents Oracle asserted have been found invalid by reexamination by the USPTO, one may be found invalid, and the other Google claims not to infringe. It's very dangerous to assert patents against Google since they are in such a good position to search for and find prior art, rendering the patent invalid.
It seems pretty clear to me that Google knew it needed licenses from their own emails cited in the Oracle pdf file. Why did they not just pay for it up front? I would love to know/understand how they can think otherwise. I may not have Patents but I hope that something as clear as this is settled quickly and fairly. I would hate to think that this could happen to something I had developed.
It seems pretty clear to me that the documents cited in the Oracle pdf file from Google indicate that Google knew and was originally looking to license Java APIs etc. I am wondering how Google thinks they can avoid this type of patent lawsuit (especially given the popularity of Android AND the fragmentation it causes). Anyone have insight on this?