Treadwell v. Bladen
Opinion of the Court
The witness can have no interest in the event of this suit, as the verdict could not be given in evidence should the plaintiffs obtain it, in any action which the defendant might bring against him, for the purchase money, or for damages. What interest he has. is in the question merely, and even that is remote. Whatever objection can be raised can go only to his credit. The witness was asked generally, if he knew that this improvement had been in use by any person prior to the application of Treadwell? This was objected to by the plaintiff’s counsel, the notice having designated three persons by name who had so used it.
WASHINGTON, Circuit Justice. This objection was taken in the case of Evans v. Eaton [Case No. 4,559], was overruled by this court; and that decision was approved by the supreme court on a writ of error [3 Wheat. (16 U. S.) 454]. The present objection must meet the same fate. Poole proved that his invention was made about the 1st of January, 1824. That he had seen gingerbread at Boston before the year 1819, connected together; but he knew not by what machine they were made, never having seen any, nor did he know that they were formed by a machine. Christian gave the same evidence as he did at the former trial. Siddons stated, that in July. 1820, he had a machine made with cutters, cleavers and dotters, holes and niches, • but he never used it. That he got his first idea of the machine from Edward Treadwell, whose machine was then in operation. The plaintiff then gave evidence to prove that Edward Tread-well invented his machine prior to 1819, and that in the latter part of that year it was made, and in use in this city. Some contradictory evidence was given as to the use of the plaintiff’s improvement, and as to its difference from Christian’s machine both in principle and in form.
The following objections were made by the defendant’s counsel to the validity of the plaintiff’s patent: 1. That the first patent of Treadwell, as well as the evidence in the cause, show that this improvement was known, and in use, before the application for the present patent. 2. That a party cannot have, at the same time, two valid patents for the same thing. The first patent is yet in existence, which invalidates the second. Morris v. Huntington [Case No. 9,831]; 2 Mass. 30. 3. That the alleged improvement of Treadwell upon Christian’s invention is not in principle, but in form only; as Christian stated in his evidence that he had provided in his machine for the use of a wire which was to operate as a clearer of the loose cut dough; which, if it had been used, would have produced the same effect’ as the holes in Treadwell’s machine. 4. Treadwell was not the first inventor of the improvement which he has patented. The plaintiff’s counsel cited on the first point made by the defendant’s counsel, Evans v. Weiss [Case No. 4,572]; Woodcock v. Parker [Id. 17,971]; Goodyear v. Mathews [Id. 5,576]; Morris v. Huntington [supra].
WASHINGTON. Circuit Justice (charging jury). The plaintiffs have laid before you a patent, for the improvements of which they
The next objection raised against the discovery of Treadwell is. that what he calls an improvement upon Christian's machine, is in form only, and not in principle. What constitutes form, and what principle, is often a nice question to decide; and upon none, are the witnesses who are examined in patent causes, even those who are skilled in the particular art, more apt to disagree. It seems to me that the safest guide to accuracy in making the distinction is. first to ascertain what is the result to be obtained by the discovery; and whatever is essential to that object, independent of the mere form and proportion of the thing used for the purpose, may generally, if not universally, be considered as the principles of the invention. What, for example, is the object of Treadwell’s improvement upon Christian’s machine? The answer is, to render the operation of that machine more expeditious in the making of biscuit, by uniting the cakes, so that seven of.them may be removed from the place where they are, and with the same labour which would be required to remove a single one; and by enabling the operator, with greater facility, to extricate the machine from the loose dough. These results are produced by two contrivances not to be found in Christian’s machine, and which constitute the principles of Treadwell’s improvement. But it is contended that, as Christian contemplated using wires in his machine, the operation of which would be to clear away the loose dough, the holes in Treadwell’s machine differ in form only from the wires before spoken of. The answer to this is, that the wires were never attached to Christian’s machine, and were never used with it; and consequently, the objection has no foundation in the sixth section of the patent law.
It is in the third place objected to the validity of Treadwell’s patent, that his improvement was known, and in use, prior to his application for a patent; it was used by Watson, and by the defendant for some years prior to May, 1826. If there be any solidity in this argument, the patent law would very nearly become a dead letter; as every inventor uses the machine he invents before he applies for a patent, with a view to satisfying himself whether it answers the purpose for which it was intended. But it is probable that the counsel did not intend to direct their objection to this kind of use; butito a general use of it, for some length of time, by the inventor, or by others.
In this view of the question, it is certainly not without difficulty, and it was felt by this court when the case of Evans v. Weiss [supra], was decided. The difficulty is created by the first section of the act of 1798 [1 Stat. 3181, which authorises the issuing of a patent to any citizen of the United States who shall allege himself to be the inventor of any new and useful art. machine, &c. not known or used before the application, &e. To construe those expressions, uninfluenced by other parts of the patent law, to mean the knowledge of, or use by the inventor himself, would, for the reason before mentioned, render the act a feío de se; and even to extend those expressions to the knowledge of a third person, surreptitiously obtained, and his consequent use of the invention, without the consent of the inventors, would be unreasonable and manifestly repugnant to the whole spirit and design of the patent system. But whatever difficulty may arise out of the first section of the act, it is, I think, cleared away by other parts of the act of 1793; particularly by that clause of the sixth section which authorises the defendant to give in
Lastly. It is objected that the existence of the patent of January, 1820, at the time the patent of May, 1826, was obtained, invalidated the latter.
I entirely concur in the decisions in the cases cited (Morris v. Huntington [supra], and 2 Mass. 30). The principle there decided is, that a person cannot have two subsisting valid patents at.the same time, for the same invention. The question in this case then is, are the fwo patents to Tread-well for the same invention? I think most clearly that they are not. The first patent was for an improvement in the art of making crackers and sugar biscuit by the combined operation of a cutter, a cleaver, a dot-ter, and contrivances, (as they are called,) for connecting the cakes, and freeing the board from the loose dough. The second patent is for an improvement on Christian’s machine by adding to it the contrivances for connecting the cakes or biscuit, and for relieving the board or machine from the loose dough.
But it is insisted that the first patent, which was for the combined operation of those five parts, was necessarily a patent for all and each of the parts, and consequently for those two for .which the last patent was granted. This argument was urged in the case of Evans v. Eaton [Case No. 4,560], and was rejected by this court, and that refutation was approved by the supreme court on a writ of error, so far as it was rested on the general patent law. The difference between that case and this is, that there the court was confined to a private act for the relief of O. Evans, and upon that point, I freely acknowledge that this court was mistaken. These two patents can no more be said to be for the same invention, than the patent to O. Evans for the combined operation of the five instruments for which his patent was issued, and a patent for the hopper boy, had one been granted, could be said to be for the same invention, had the private act been out of the question. But even if these patents were substantially for the same invention, 1 should strongly incline to the opinion (without meaning, however, to give a positive decision on the point), that the disclaimer of all title under the first patent to the three material parts of the invention for which it was granted, would operate as an estoppel to any remedy which might be prosecuted tor a violation of that patent; and if all remedy for a breach of that patent be defeated, can any right under it remain?
If, upon the whole, the jury be satisfied that the defendant has used the improvement for which the plaintiff has a patent,
Case-law data current through December 31, 2025. Source: CourtListener bulk data.