(after stating the facts as above). This action was brought by the plaintiffs in error to recover damages from defendant for the infringement of letters patent No. 647,934, dated April 24, 1900, issued to Warren F. Beck of Elmira, N. Y., for “certain new and useful improvements in manifold-pads and holders.” The following specification is set forth in the letters patent:

The claims of the patent which are alleged to be infringed read as follows:

A stipulation was filed by the respective parties waiving a jury, and the case was tried before the court. They also stipulated that certain specified facts should be assumed as duly proven. Upon the evidence in the case and the stipulation as to certain facts, the court found the findings of fact and conclusions of law set forth in the foregoing statement.

The plaintiffs in error have made fourteen specific assignments of error upon which they rely for a reversal. It will not, however, be necessary to specifically notice these assignments; a general reference to the most essential points will be deemed sufficient.

It is argued by plaintiffs in error that the trial court failed to recognize the force of the rule of law that a patent for an invention is prima facie evidence of the existence of all the facts essential to its validity. In support of this argument, plaintiffs in error claim that *258 the result arrived at by the court below could not have been reached by-any possibility had this rule of law been'applied, and assert that the court below had a doubt, and, instead of resolving its doubt in favor of the patent, the court below resolved its doubt against the patent. It is unnecessary for the court to include in its findings of fact the principles of law applicable to patent cases, and there is nothing in the record which justifies the statement of the plaintiffs in error that the court had any doubt upon the points referred to, or, if it had any doubt, that it did not resolve it in favor of the patent. The result arrived at did not of itself show, or tend to show, that the court did not apply the force of the rule of law as to the presumptions in favor of the validity of the patent.

This court cannot assume that any facts appeared on the hearing in the court below which are not disclosed by the record. There is no force in counsel’s argument on this point.

In Palmer v. Village of Corning, 156 U. S. 342 , 15 Sup. Ct. 381, 39 L. Ed. 445 , the court said:

In Reckendorfer v. Faber, 92 U. S. 347, 352 , 23 L. Ed. 719 , the court held that the decision of the commissioner of patents in the allowance and issue of a patent creates a prima facie right only; and, upon all the questions involved therein, the validity of the patent is subject to examination by the courts, and in the course of its opinion said:

The books are full of cases where patents regularly issued by the patent office have been declared void. It is only in cases of doubt upon the point that the presumption arising from the issuance of the patent will have any controlling influence upon the mind of the court.

It is next claimed:

The defendant in error does not controvertí the question of the utility of the patent as a basis for a patent, but contends that the evidence as to the comparative utility claimed for it over defendant’s Exhibit A was introduced, not for the purpose of proving utility as a basis of a patent, but as evidence of novelty, which was the real fact in issue. The question of novelty is a question of fact for the jury, or, when a jury is waived, is a question of fact to be decided by the court. In addition to the authorities heretofore referred to, see Westlake v. Cartter, 6 Fish. Pat. Cas. 519 , Fed. Cas. No. 17,451; Battin v. Taggert, 17 How. 74, 85 , 15 L. Ed. 37 .

In 1 Rob. Pat. § 344, the author says:

It is, among other things, claimed that the court erred “in not giving judgment in favor of the plaintiffs in error on the facts found by the court.” It is true that some of the findings mention certain facts tending to support the validity of the patent, but this does not show that the court erred in disposing of the case on the ground of lack of novelty in the patent. There are but few patents issued that do not possess some valuable and essential features of the patent law. This is frequently recognized in the decisions of the courts where it is held that the patent lacks invention or is void for want of novelty.

In Richards v. Elevator Co., 159 U. S. 477 , 487, 16 Sup. Ct. 53, 40 L. Ed. 225 , the court said:

The mere fact that a patented device or article meets with increasing sales and is popular is wholly unimportant when it clearly appears that the invention is without patentable novelty. Duer v. Lock Co., 149 U. S. 216, 223 , 13 Sup. Ct. 850, 37 L. Ed. 707 ; Printing-Press Co. v. Scott (C. C.) 103 Fed. 650, 657 ; National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co., 45 C. C. A. 544 , 106 Fed. 693, 707 , and authorities there cited.

In McClain v. Ortmayer, 141 U. S. 419, 429 , 12 Sup. Ct. 76, 35 L. Ed. 800 , the court said:

In Klein v. City of Seattle, 23 C. C. A. 114 , 77 Fed. 200, 204 , this court said:

The court below, in the twelfth finding, against which it is seriously argued there is not sufficient evidence to support it, found on the question of comparative utility, which is a pure question of fact, that Beck’s *260 alleged invention was no better than the combination evidenced by defendant’s Exhibit A. Evidence was offered upon this point which tended to sustain this and the other findings of fact, and the question arises whether this court can review such findings. . Did the court below err in its conclusions upon the facts that the patent relied upon by plaintiffs “is void for want of novelty” ? • The plaintiffs in error have argued this case upon the theory that it is the duty of this court to review all the findings of fact found by the court below, and determine whether there is any sufficient evidence to support the findings or justify the conclusion reached by the circuit court. We do not understand such to be the law. The statutes of the United States provide that the trial of issues of fact in actions at common law in the circuit and district courts shall be by jury. Rev. St. §§ 566, 648, 649; 2 Fost. Fed. Prac. § 374; King v. Smith, 49 C. C. A. 46 , 110 Fed. 95 , 54 L. R. A. 708, and authorities there cited. In section 1007, Rob. Pat., it is said that the rules of evidence in actions for infringement of patents “are in their general character identical with those by which the federal courts are guided in other suits at law.” The supreme court of Oregon, in which state this case was tried, has held that a finding of fact by a trial court in an action at law will not be disturbed on appeal if there is any evidence to support it. Bartel v. Mathias, 19 Or. 483 , 490, 24 Pac. 918 ; Liebe v. Nicolai, 30 Or. 364 , 48 Pac. 172 . In the national courts it has frequently been held that, where the parties consent that the case be tried before a judge or referee, the only question presented by the writ of error is whether there is any error of law in the judgment upon the facts as found by the judge or referee. The court’s findings upon questions of fact are not subject to review in the appellate court if there is any legal evidence upon which such findings could be made. U. S. v. Dawson, 101 U. S. 569 , 25 L. Ed. 791 ; Boogher v. Insurance Co., 103 U. S. 90, 95 , 26 L. Ed. 310 ; Miles v. U. S., 103 U. S. 304 , 26 L. Ed. 481 ; Paine v. Railroad Co., 118 U. S. 152, 158 , 6 Sup. Ct. 1019, 30 L. Ed. 193 ; Stanley v. Board, 121 U. S. 535, 547 , 7 Sup. Ct. 1234, 30 L. Ed. 1000 ; Hathaway v. Bank, 134 U. S. 494, 498 , 10 Sup. Ct. 608, 33 L. Ed. 1004 ; Rogers v. U. S., 141 U. S. 548, 556 , 12 Sup. Ct. 91, 35 L. Ed. 853 , and authorities there cited; 7 Enc. Pl. & Prac. 847, 848. In Myers v. Brown, 42 C. C. A. 320 , 102 Fed. 250 , where it was urged by the plaintiff in error that the verdict of the jury was against the weight of the evidence, the court said: “The conclusive answer to this suggestion is that upon a writ of error the appellate court does not review controverted questions of fact.” ' In Stanley v. Board, 121 U. S. 535 , 7 Sup. Ct. 1234, 30 L. Ed. 1000 , the court said:

For the reasons herein stated, the judgment of the circuit court must be affirmed. It is so ordered.