William Burnham Woods,
Slawson v. Grand Street — Opinion of the Court
“ It would ill become a court of equity to render money decrees in favor of a complainant for the infringement of a patent which the court could see was void on its face for want of invention. Every suitor in a cause founded on letters patent should, therefore, understand that the question whether his invention is patentable or not, is always open to the consideration of the court, whether the point is raised by the answer or not. ”
