Re-reading Cintron & patents linked in report
The first patent infringed is US PTO No. 6,071,537, & corresponding EP patent EP0915697.
From what I've read, the basis of the patents is for using Topiramate for "weight loss," and that's enforcable till 2017.
To clarify, it isn't the patent J&J would have on forumlation which expired but rather how its used.