I expect something similar to happen in '13 with
Purdue Pharma (not to be confused with
Purdue Farms - the chicken people

) when the Oxycontin patents expire. I totally expect them to claim that the new formulation (which most patients and doctors claim does not work as well, and does not prevent/deter abuse as claimed) constitutes a whole new patent, and try to extend it another 15-20 years (from the date of the formula change).
Profits:x 2
Patients: 0
Doc