There were three different patents cited as prior art and covering all but a couple of claims. The only claim at issue in Apple's '172 infringement assertions in the Apple Samsung case was Claim 18. It's been found to be anticipated by both U.S. Patent Number 6,801,190, referred to as "Robinson" in the filings and International Patent Number WO 2005/008899 which is referred to as "Ng".
FWIW those are the same patents (plus one other) that Samsung brought up to Judge Koh before she made a decision from the bench that the patent was valid and Sammy was infringing. There's legal commenters saying she'll likely reverse her infringement decision now but of course anticipating what Judge Koh might do is akin to a coin flip IMO.
Edited by Gatorguy - 8/8/14 at 9:33am