Allergan PLC went to great lengths to protect its patents for its blockbuster dry eye drug Restasis (cyclosporine), but the company's most controversial effort – transferring ownership of its patents to the Saint Regis Mohawk Tribe – was swatted down by the Patent Trial and Appeals Board (PTAB).
The PTAB, which hears patent interference cases filed with the US Patent and Trademark Office, issued a decision on Feb....








