Drug maker AstraZeneca filed two patent infringement suits in federal court in Trenton, N.J., on Tuesday against drug makers who are seeking to produce knockoffs of its products.

The Sweden-based company sued Sandoz International over a Food & Drug Administration application to produce a generic version of the breast cancer drug Faslodex and sued Sun Pharmaceutical Industries over an application to produce a generic version of diabetes drugs Onglyza and Kombiglyze.