Folsom v. Marsh

STORX, Circuit Justice.

This is one of those intricate and embarrassing questions, arising in the administration of civil justice, in which it is not, from the peculiar nature and character of the controversy, easy to arrive at any satisfactory conclusion, or to lay down any general principles applicable to all cases. Patents and copyrights approach, nearer than any other class of cases belonging to forensic discussions, to what may be called the metaphysics of the law, where the distinctions are, or at least may be, very subtile and refined, and, sometimes, almost evanescent. In many cases,…