324 U.S. 806 (1945) Cited 1,066 times 9 Legal Analyses
Holding that clean-hands doctrine "presupposes [a court of equity's] refusal ... to be the ‘abetter of iniquity’ " (quoting Bein v. Heath , 47 U.S. 228, 247, 6 How. 228, 12 L.Ed. 416 (1848) )
Finding that importing limitations from the specification into the claims may be proper where the specification "repeatedly and uniformly describes the spike as a pointed instrument for the purpose of piercing a seal inside the valve."
282 U.S. 55 (1930) Cited 404 times 1 Legal Analyses
Holding the word “and” in its “ordinary sense” is a conjunctive word, requiring “not one or the other, but both see also e.g., City of Rome v. U.S., 446 U.S. 156, 172, 100 S.Ct. 1548, 64 L.Ed.2d 119
Holding that performing a pre-filing assessment of the basis of each infringement claim is . . . extremely important. In bringing a claim of infringement, the patent holder, if challenged, must be prepared to demonstrate to both the court and the alleged infringer exactly why it believed before filing the claim that it had a reasonable chance of proving infringement
Holding that “[p]ractice of the invention by others may indeed cause [the nonexclusive licensee] pecuniary loss,” but “economic injury alone does not provide standing to sue under the patent statute”