As documented at the site the link in your question points to, this was a subject of large push-back. There was a re-examinaion process started that is still pending and it looks like the one law suit has been stayed waiting for the result of the re-exam.

This can be looked up and followed in the USPTO public PAIR. The reexam serial # is 90/011,974 and two of the dates things have happened are:

01-10-2012 Notice of Reexam Published in Official Gazette And the last thing in the case was a response by the patent holder

12-03-2012 Response after Non-Final Action

As documented at the site the link in your question points to, this was a subject of large push-back. There was a re-examinaion process started that is still pending and it looks like the one law suit has been stayed waiting for the result of the re-exam.

This can be looked up and followed in the [USPTO Public PAIR][1]. If you up an application or patenting PAIR there is a continuity tab that will give you information and links to it related parent and child applications. A reexamination proceeding gets is own serial number that the system uses like an application number.The reexam serial # in this case is 90/011,974 and two of the dates things have happened are:

01-10-2012 Notice of Reexam Published in Official Gazette

And

the last thing in the case was a response by the patent holder:

12-03-2012 Response after Non-Final Action