系爭專利
本案 (Aventis Pharma Deutschland GmbH v. Lupin, Ltd. (Fed. Cir. 2007)案) 系爭專利為美國專利第5,061,722 號 ('722專利)。'722專利的系爭請求項如下:
A compound of the formula
or a physiologically acceptable salt thereof, wherein R2 is hydrogen, methyl, ethyl, or benzyl, and wherein hydrogen atoms on the ring carbon a...