27 U.S. 1 (____)
2 Pet. 1
ABRAHAM L. PENNOCK & JAMES SELLERS, PLAINTIFFS IN ERROR
vs.
ADAM DIALOGUE.
Supreme Court of United States.
4*4 Mr Webster, for the plaintiff in error.
Mr Sergeant, for the defendant.
14*14 Mr. Justice STORY delivered the opinion of the Court.
This is a writ of error to the circuit court of Pennsylvania. The original action was brought by the plaintiffs in error for an asserted violation of a patent, granted to them on the 6th of July 1818, for a new and useful improvement in the art of making leather tubes or hose, for conveying air, water, and other fluids. The cause was tried upon the general issue, and a verdict was found for the defendant, upon which judgment passed in his favour; and the correctness of that judgment is now in controversy before this court.
At the trial, a bill of exceptions was taken to an opinion delivered by the court, in the charge to the jury, as follows, viz. “That the law arising upon the case was, that if an inventor makes his discovery public, looks on and permits others freely to use it, without objection or assertion of claim to the invention, of which the public might take notice; he abandons 15*15 the inchoate right to the exclusive use of the invention, to which a patent would have entitled him had it been applied for before such use. And, that it makes no difference in the principle, that the article so publicly used, and afterwards patented, was made by a particular individual, who did so by the private permission of the inventor. And thereupon, did charge the jury, that if the evidence brings the case within the principle which had been stated, the court were of opinion that the plaintiffs were not entitled to a verdict.”
The record contains, embodied in the bill of exceptions, the whole of the testimony and evidence offered at the trial by each party, in support of the issue. It is very voluminous, and as no exception was taken to its competency, or sufficiency, either generally or for any particular purpose; it is not properly before this Court for consideration, and forms an expensive and unnecessary burthen upon the record. This Court has had occasion in many cases to express its regret, on account of irregular proceedings of this nature. There was not the slightest necessity of putting any portion of the evidence in this case upon the record, since the opinion of the court delivered to the jury, presented a general principle of law, and the application of the evidence to it was left to the jury.
In the argument at the bar, much reliance has been placed upon this evidence, by the counsel for both parties. It has been said on behalf of the defendants in error; that it called for other and explanatory directions from the court, and that the omission of the court to give them in the charge, furnishes a good ground for a reversal, as it would have furnished in the court below for a new trial. But it is no ground of reversal that the court below omitted to give directions to the jury upon any points of law which might arise in the cause, where it was not requested by either party at the trial. It is sufficient for us that the court has given no erroneous directions. If either party deems any point presented by the evidence to be omitted in the charge, it is competent for such party to require an opinion from the court upon that point. If he does not, it is a waiver of it. 16*16 The court cannot be presumed to do more, in ordinary cases, than to express its opinion upon the questions which the parties themselves have raised at the trial.
On the other hand, the counsel for the defendant in error has endeavoured to extract from the same evidence, strong confirmations of the charge of the court. But, for the reason already suggested, the evidence must be laid out of the case, and all the reasoning founded on it falls.
The single question then is, whether the charge of the court was correct in point of law. It has not been, and indeed cannot be denied, that an inventor may abandon his invention, and surrender or dedicate it to the public. This inchoate right, thus once gone, cannot afterwards be resumed at his pleasure; for, where gifts are once made to the public in this way, they become absolute. Thus, if a man dedicates a way, or other easement to the public, it is supposed to carry with it a permanent right of user. The question which generally arises at trials, is a question of fact, rather than of law; whether the acts or acquiescence of the party furnish in the given case, satisfactory proof of an abandonment or dedication of the invention to the public. But when all the facts are given, there does not seem any reason why the court may not state the legal conclusion deducible from them. In this view of the matter, the only question would be, whether, upon general principles, the facts stated by the court would justify the conclusion.

