E. Bement & Sons v. La Dow, 66 Fed. 185 (Cir. Ct. N.Y. 1895)
[N]o property is so uncertain as "patent rights"; no property more speculative in character or held by a more precarious tenure. An applicant who goes into the patent office with claims expanded to correspond with his unbounded faith in the invention, may emerge therefrom with a shriveled parchment which protects only that which any ingenious infringer can evade. Even this may be taken from him by the courts. Indeed, it is only after a patentee has passed successfully the ordeal of judicial interpretation that he can speak with any real certainty as to the scope and character of his invention.