Petersime Incubator Co. v. Bundy Incubator Co.

135 F.2d 580, 57 U.S.P.Q. (BNA) 215, 1943 U.S. App. LEXIS 3328
CourtCourt of Appeals for the Sixth Circuit
DecidedApril 6, 1943
DocketNo. 9345
StatusPublished
Cited by7 cases

This text of 135 F.2d 580 (Petersime Incubator Co. v. Bundy Incubator Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Sixth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Petersime Incubator Co. v. Bundy Incubator Co., 135 F.2d 580, 57 U.S.P.Q. (BNA) 215, 1943 U.S. App. LEXIS 3328 (6th Cir. 1943).

Opinion

ALLEN, Circuit Judge.

Appellant brought an action praying for a declaratory judgment holding Stover patent 1,911,249 for an apparatus for hatching eggs, and Stover patent 1,911,250, for a process for the incubation and hatching of eggs, both owned by appellee, invalid and not infringed, and an injunction against alleged acts of unfair competition practiced by the appellee. The answer denied the charge of unfair competition and asserted validity of the patents and infringement by the appellant. By stipulation of counsel the only claim in issue is method claim No. [581]*5815 of patent 1,911,25o,1 which appellant contends is invalid in law by reason of anticipation by prior patents, publications and uses, and because it lacks patentable invention over the prior art.

The District Court found that the prior art patents are substantially like those relied on in Cugley v. Bundy Incubator Co., 6 Cir., 93 F.2d 932, and that none of the prior art or alleged prior uses shows the patentable combination which constitutes the Stover invention. It concluded that claim 5 of the patent is valid, held it infringed by the appellant, and ordered injunction and an accounting.

The claim in issue has been fully considered and held valid by this court in Cugley v. Bundy Incubator Co., supra. Appellant, however, was not a party to that litigation and in this case it relies upon various prior art patents and alleged prior uses not presented in the former suit, and claims that these establish invalidity.

The general features of incubation have been commonly known for many years. The period for hatching hens’ eggs is twenty-one days. At the beginning of the period the eggs are cold and must be brought up to and maintained at about body heat, 99 or 100 degrees Fahrenheit, for successful incubation. If the embryo becomes either overheated or overchilled, it is destroyed. During approximately the first ten days of incubation the eggs are endothermic, that is, they absorb heat. From the eleventh day on they are exothermic, that is, they generate and give off excessive heat. The Stover patent teaches the importance of maintaining the eggs at a constant temperature throughout the entire twenty-one day period, while increasing the humidity during the last three days, and describes a method of controlling both temperature and humidity at specified levels. The difficulty of the problems involved and the highly successful results in terms of decreased mortality of embryos and newly hatched chicks are fully described in the Cugley case, supra.

The Stover method provides for the use of two enclosed chambers equipped with means for controlling both temperature and humidity, the eggs being removed from the first, or incubating chamber, to what is referred to as the hatching chamber, at the end of the eighteenth day of incubation. The specifications of the patent describe the gist of the invention as follows: “The humidity control and the amount of humidity in the incubating compartment are the essentials of my invention. I arrange the humidity from 78 to 80 degrees while maintaining the temperature at 99% degrees. When the eggs are at the end of the 18th day of incubation, I move them over into the hatching compartment where I increase the humidity from 84 to 86 degrees while maintaining the temperature at 99% degrees.”

In order to maintain the constant temperature and regulate the humidity at the desired level in the two chambers, Stover employs a humidifier cooler, containing a wheel which sprays water into a passage through which outside air is drawn into the hatching chamber. This operation permits an increase of humidity in the hatching chamber to the relatively high point desired and the process of evaporation involved offsets the heat given off by the exothermic eggs. As found in the Cugley case, supra, when the humidity is increased in the hatching chamber over that maintained in the incubating chamber, in accordance with the Stover process, without permitting the temperature of the hatching period to exceed the temperature of the incubating period, the chick breaks through the eggshell more easily, the possibility of infection is lessened, and and a sturdier chick is produced.

Under the early practice the temperature was increased in hatching. Cugley v. Bundy Incubator Co., supra, 93 F.2d at page 934. It is essential for the best results that the temperature be kept constant, and Stover gives definite and detailed instructions which, if followed, enable one skilled in the art to keep the temperature down and at the same time secure the proper increase in humidity at hatching. It is absolutely essential for the proper performance of the Stover process that these two conditions, increased humidity and constant temperature, be attained in the [582]*582hatching chamber. The need of maintaining the temperature in the hatching chamber at the same level as that in the incubating chamber was recognized before Stover, and certain efforts were made in the prior art to keep the temperature constant by the use of ventilation. But the experts for both appellant and appellee agree that when cool air is brought into the hatching chamber to hold down the temperature, the air which passes out of the chamber carries humidity with it, and decreases, instead of increases, the moisture. It follows that ventilation alone cannot solve the problem which Stover solves. The prior patents and prior uses relied on by appellants were unable to secure the results of Stover because the prior art revealed only water pans for controlling humidity and ventilation for cooling. As the District Court found, “The concurrent increase in humidity and the low temperature in the hatching chamber cannot be secured in incubators or hatching chambers in which water pans are the humidifying means and ventilation the cooling means. In such cases in order to offset the heat given off by the hatching eggs, the ventilators must be opened to such an extent as to cause the loss of the excess humidity.” 43 F.Supp. 446, 452. In view of the testimony of both experts as to the effect of ventilation upon humidity, not only is this finding supported by the record, but no other finding could be made. It results, therefore, that the process of claim 5 could not be and was not practiced in the incubators of the prior art presented here.

The prior patents, as found by the District Court, plainly do not anticipate Stover. Scott, 1,624,629, and British patent to Guttinger, 162,294, taught the desirability of maintaining an even or uniform temperature. While, as shown by the testimony, this proposition was not uniformly accepted, certainly the idea of constant temperature was old. But these patents in no way described the process of increasing humidity at the same time that the temperature is maintained constant. De La Rue, 1,433,262, had only one chamber. Lackie, 1,820,311, and Markey, 1,751,093, state the general purpose of allowing conditions of temperature and humidity to be varied in accordance with requirements suited to the particular stage of incubation, but do not reveal what these requirements are. None of these patents discloses fans in the hatching compartments. Fries, 859,649, and High, 1,181,886, describe humidifying devices but do not teach their use in the incubating art. A review of the prior art patents presented herein adds nothing to the consideration of similar and closer patents made in the Cugley case.

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135 F.2d 580, 57 U.S.P.Q. (BNA) 215, 1943 U.S. App. LEXIS 3328, Counsel Stack Legal Research, https://law.counselstack.com/opinion/petersime-incubator-co-v-bundy-incubator-co-ca6-1943.