Our Litigators of the Week are Sidley Austin’s Vernon Winters and David Pritikin, who came out on top in a patent fight worth billions to their client, Amgen and its subsidiary Immunex. 

Amgen makes Enbrel, a wildly successful biologic drug which has domestic sales of nearly $5 billion per year. But three Sandoz subsidiaries of global biopharma company Novartis were poised to introduce a biosimilar version of the drug—if they could prove Enbrel’s patents were invalid.