(Cock)Holder & the gang are reaching.
In order to win this case, they're going to have to prove that a) FedEx SHOULD have known whether the medications they were delivering were prescribed for the recipient(s) they delivered them to (HIPPA theoretically makes it impossible for anyone not a doctor or pharmacy to know that) and b) that having that responsibility, FedEx chose instead to "look the other way" for whatever reason (continued revenue stream, presumably).
This reeks of a shakedown, if you ask me...