In Mercoid Corp. v. Mid-Continent Inv. Co.,
A careful study of the opinion, together with its interpretation by the dissenting Justices, and a consideration of the doubt implicit in the observation “what residuum may be left we need not stop to consider” leads to the conclusion that nothing has been left of the doctrine as formerly it had been applied to the furnishing of unpatented parts integral to structures embodying patented combinations. Whether this bodes good or ill for the continuation of industrial progress under the aegis of the patent laws, it is not for us to say. May we, however, without impropriety, suggest a doubt whether, for practical purposes, much is left of that other doctrine, that a combination of old elements is inventive if it produces a new and useful result, for if one supplier may furnish an integral part specifically intended for use in the patented combination, with no other use apparent, without being guilty of infringement, other manufacturers may do likewise in respect to other parts. The result may be that only he is an infringer who furnishes all of the elements of the patented combination and integrates them into operating embodiment, and so in many cases, the only infringers, as the present case illustrates, are the ultimate consumers whom it would be fruitless to pursue in the enforcement of patent rights.
The present infringement suit, however, poses determinative issues other than the question of contributory infringement upon which the case confidently may be decided. The Mercoid doctrine being but newly announced and the full sweep of its implications not too clearly grasped, it may not be inappropriate, without disrespect to the court, and with no thought of questioning the controlling authority of its opinion, but awaiting its specific application in other cases, to base decision upon principles fixed in the law by the passage of time and repeated adjudications, since it may here be done, to the end that novel doctrine may more safely guide us when fully crystallized, without our own unnecessary contribution to the process.
*802 Involved in the present controversy are 14 patents, listed in the margin, 1 for various improvements in die heads for cutting threads in mass production. Each patent utilizes cutters, called “chasers” in the present art, of the tangential type. Four of such chasers are used at the same time, being held in the head so that one end of each bears on the work while the rest of it proceeds at a tangent. The holders are designed to present the chasers tangentially and at a proper angle to the work to produce the desired thread. The heads, in combination with holders and chasers, force the work into the die, and when the proper length of thread is completed, automatically open so that the bolt may be withdrawn without rotary reversal of the cutters, as in earlier art. It is conceded that the chaser patents have expired. The alleged infringement by the appellee consists of selling chasers for use in the patented combinations and re-building a small number of patented heads. The appellant also counted upon unfair competition because the accused chasers were sold in containers deceptively similar to those of the appellant. The defenses were invalidity based on anticipation, denial of right to equitable relief when patent monopoly is sought for unpatented elements, violation of the Clayton Act, 38 Stat. 730, denial of monopoly over replaceable and expendable elements, and denial of unfair competition. The appellee counterclaimed under .the Clayton Act but waived its right to treble damages. ,
All issues were resolved in favor of the defendant. The court dismissed the plaintiff’s bill but ordered an injunction upon ■the defendant’s counterclaim, restraining the plaintiff from attaching any notices to its chasers, die heads, or holders, requiring the purchaser to use its die heads only with chasers of its own manufacture or to use its chasers only with its die heads, or to lead purchasers -to believe that ■they are bound to use both die heads and chasers manufactured by the plaintiff.
Before considering the defense of invalidity, whether based upon anticipation of the claims of the patents in suit by prior art, or because of the rule of Bassick Mfg. Co. v. R. M. Hollingshead Co.,
The plaintiff justifies this practice because of the complexity of its die heads, the great expense of its revision and instruction service, and a general trade practice developed in the industry long before it entered the field. All of the plaintiff’s competitors, it is said, respected its rights and they were well understood by the trade until the defendant’s infringing activities assumed serious proportions. The defendant, it says, was formed in 1934 to manufacture and sell chasers to be used in die heads of the plaintiff, and it markets only its profitable lines of chasers. The defendr ant makes no Landis system die heads, has never manufactured a head of its own design, and its chasers are unnecessarily ex•act and precise copies of the plaintiff’s chasers in all essential particulars, and capable of no substantial use other than in the patented combinations.
In this situation it becomes necessary to consider the precise relation of the chaser to the die head and holder. The chaser is a cutting tool, and while from time to time its effectiveness may be renewed by grinding and sharpening, it would seem inescapable that it is an expendable element of the patented combination, and so under the rule of the cited cases, being itself unprotected by existing patents, may not be, brought within patent protection. This view the plaintiff vigorously challenges! on the ground that the chaser is the dynamic element of the patented combinations. Its contention is negatived by itst, own business practice. The restriction in the chaser license limiting it to their life, the availability of die heads for purposes other than thread cutting, and the repeated assertion that competitive conditions require that plaintiff make its profit through sale of chasers rather than die heads, support our conclusion. So do the recitals in the stipulation that purchasers of plaintiff’s die heads and chasers, purchase chasers from the defendant to replace worn out chasers of the original combination. The rule that an expendable element in a patented combination may be replaced without infringement was quite early developed in the patent law, Wilson v. Simpson,
We therefore find no error in a decree which dismissed the bill because the plaintiff had attempted to expand its monopoly to cover the unpatented chaser by notices which accompanied both chaser and die heads, and this result conforms to the conclusion in the Mercoid case, quite apart from the limitations there announced upon the doctrine of contributory infringement, ’ for it was there said that even if there were an assumption that Mercoid was a contributory infringer and could have been enjoined for infringement, the same result would be reached because of the plaintiffs’ misuse of the patent for the purpose of monopolizing unpatented material. Inasmuch as their misuse of the patent would have precluded, them from enjoining direct infringement, they cannot stand in any better position with respect to a contributory infringer.
A charge of direct infringeiment is, in a few instances; based upon replacement of bushings and closing pins, in the patented heads, and upon advertisements that the defendants would rebuild die heads for which it supplied chasers. If, under long accepted principles, this was reconstruction, there was infringe
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ment, and the plaintiff might secure relief if not barred by inequity. The evidence, however, was clear that pins and bushings were subject to wear, and when worn required replacement. In a careful consideration of the problem involved in distinguishing permissible replacement from impermissible reconstruction, this court in Automotive Parts Co. v. Wisconsin Axle Co., 6 Cir.,
The assertion of unfair competition is based upon the use by the defendant of metal boxes for its chasers identical with those of the plaintiff, made by the same manufacturer and of similar color. There is no evidence that the defendant made any effort to palm off its goods as those of the plaintiff, and there is no sound basis for drawing a conclusion that it intended to do so. O. & W. Thum Co. v. Dickinson, 6 Cir.,
The court found that the plaintiff sold its chasers on condition that the purchaser would also buy its die heads for use with the chasers, and sold its die heads on the condition that the purchaser would also buy its chasers, and so concluded that this practice not only tended to create a monopoly for plaintiff in its die heads and chasers, but had created it, and that pursuit of such practices was a violation of the Clayton Act, Title 15 U.S.C.A. §§ 14 and 15. The appellant contends that no such condition was attached either to the sale of its die heads or its chasers. Expressly, that may be true—practically and by inescapable implication, it is not. The die heads are expensive even at the plain- . tiff’s low selling price. Their most useful purpose is in thread cutting operations. It is idle to contend that they would have a substantial market merely as chucks or tool holders. They may not, however, be used in thread cutting without specific license obtainable only from the plaintiff and then only by purchase of its chasers. Compulsion is there whether expressed or not. Since the only justification for the monopoly thus sought over unpatented chasers is based upon the patent grants, and these proving of no avail for such purpose, the plaintiff’s practices are clearly in violation of the anti-trust laws. That which the patent law does not authorize the Clayton Act specifically forbids. It applies to goods, wares, machinery, etc., whether patented or unpatented, and the provision was inserted in the Clayton Act for the express purpose of preventing rights granted by letters patent from securing immunity from the inhibitions of the act United Shoe Mach. Corp. v. United
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States,
We come finally to questions of validity raised by bill and answer. The District Court held each claim in suit invalid because of anticipation in the prior ant. Having found the appellant without right to relief in equity because of an improper use of its patents, the questions here may now seem to be foreclosed. The appellant may, however, possibly have a right of action at law for damages, and, conceivably also, may, by change of business practices, be purged of inequity in respect to subsequent infringements, and so perhaps some question remains in respect to patent validity.
In Richard Irvin & Co. v. Westinghouse Air Brake Co., 2 Cir.,
This view may have much to commend it in the case of a simple patent where, on the face of the patent, invalidity clearly appears. We have, however, under consideration, 14 patents, most of them with multiple claims involving complex machines, 11 volumes of record, and an additional volume of prior art publications and patents. To what end shall we pursue our study of prior art and the recorded testimony of the experts scattered through the more than 4,000 printed pages, when if we arrive at conclusions in respect to validity, differing from those of the District Judge, we may not declare them,, or direct an amendment of the decree to adjudicate validity proscribed by the Thomas & Betts case. Whether the questions of validity have become moot or not we decline to do it and express no views thereon.
The decree below is affirmed.
Notes
Shearer 1,631,556, claim 14; Newman et al. 1,692,514, claims 6 and 12; Newman et al. 1,699,373 claims 32 and 34; Shearer 1,699,994, claims 2 and 9; Shearer 1,738,847, claims 1 and 4; Shearer 1,760,567, claims 1, 3 and 4; Shearer 1,-760,568, claims 1, 8, 15 and 16; Harper 1,795,558, daims 2 and 5; Shearer 1,861,-327, claims 1 and 4; Shearer et al. 1,874,-643, claim 4; Reimschissel 1,951,290, claim 12; Reimschissel 2,082,757, claims 10, 23, 24 and 26; Reimschissel 2,082,758, claims 2, 3 and. 5; Mathias et al. 2,154,-006, claims 1, 6, 10, 11, 15 and 17.
