1. A corporation, engaged through a wholly owned subsidiary in
the business of selling salt tablets to the canning trade, and
which also
Page 314 U. S. 489
owned a patent on a machine for depositing such tablets in the
process of canning, made a practice of licensing canners to use its
machines, but only upon condition that the tablet used with them be
bought from the subsidiary.
Held:
(1) That this use of the patent monopoly to restrain competition
in the marketing of the unpatented tablets for use with the
patented machines, and to aid in the creation of a limited monopoly
in the tablets not within that granted by the patent, is contrary
to the public policy of the United States evinced by the
Constitution and the patent law. P.
314 U. S.
491.
(2) The patentee, while engaged in such practice, cannot have an
injunction to retrain the making and leasing of infringing machine.
P.
314 U. S.
492.
2. It is a principle of general application that courts, and
especially courts of equity, may appropriately withhold their aid
where the plaintiff is using the right asserted contrary to the
public interest. P.
314 U. S.
492.
117 F.2d 968 reversed.
Certiorari, 313 U.S. 555, to review the reversal of a decree, 31
F. Supp. 876, dismissing a bill to enjoin alleged infringements of
a patent, and for an accounting.
MR. CHIEF JUSTICE STONE delivered the opinion of the Court.
Respondent brought this suit in the district court for an
injunction and an accounting for infringement of its Patent No.
2,060,645, of November 10, 1936, on a machine for depositing salt
tablets, a device said to be useful in the canning industry for
adding predetermined amounts of salt in tablet form to the contents
of the cans.
Upon petitioner's motion, pursuant to Rule 56 of the Rules of
Civil Procedure, the trial court, without passing
Page 314 U. S. 490
on the issues of validity and infringement, granted summary
judgment dismissing the complaint. It took the ground that
respondent was making use of the patent to restrain the sale of
salt tablets in competition with its own sale of unpatented
tablets, by requiring licensees to use with the patented machines
only tablets sold by respondent. The Court of Appeals for the
Seventh Circuit reversed, 117 F.2d 968, because it thought that
respondent's use of the patent was not shown to violate § 3 of
the Clayton Act, 15 U.S.C. § 14, as it did not appear that the
use of its patent substantially lessened competition or tended to
create a monopoly in salt tablets. We granted certiorari 313 U.S.
555, because of the public importance of the question presented and
of an alleged conflict of the decision below with
B. B.
Chemical Co. v. Ellis, 117 F.2d 829, and with the principles
underlying the decisions in
Carbice Corp. v. American Patents
Corp., 283 U. S. 27, and
Leitch Mfg. Co. v. Barber Co., 302 U.
S. 458.
The Clayton Act authorizes those injured by violations tending
to monopoly to maintain suit for treble damages and for an
injunction in appropriate cases. 15 U.S.C. §§ 1, 2, 14,
15, 26. But the present suit is for infringement of a patent. The
question we must decide is not necessarily whether respondent has
violated the Clayton Act, but whether a court of equity will lend
its aid to protect the patent monopoly when respondent is using it
as the effective means of restraining competition with its sale of
an unpatented article.
Both respondent's wholly owned subsidiary and the petitioner
manufacture and sell salt tablets used and useful in the canning
trade. The tablets have a particular configuration rendering them
capable of convenient use in respondent's patented machines.
Petitioner makes and leases to canners unpatented salt deposition
machines,
Page 314 U. S. 491
charged to infringe respondent's patent. For reasons we indicate
later, nothing turns on the fact that petitioner also competes with
respondent in the sale of the tablets, and we may assume for
purposes of this case that petitioner is doing no more than making
and leasing the alleged infringing machines. The principal business
of respondent's subsidiary, from which its profits are derived, is
the sale of salt tablets. In connection with this business, and as
an adjunct to it, respondent leases its patented machines to
commercial canners, some two hundred in all, under licenses to use
the machines upon condition and with the agreement of the licensees
that only the subsidiary's salt tablets be used with the leased
machines.
It thus appears that respondent is making use of its patent
monopoly to restrain competition in the marketing of unpatented
articles, salt tablets, for use with the patented machines, and is
aiding in the creation of a limited monopoly in the tablets not
within that granted by the patent. A patent operates to create and
grant to the patentee an exclusive right to make, use, and vend the
particular device described and claimed in the patent. But a patent
affords no immunity for a monopoly not within the grant.
Interstate Circuit v. United States, 306 U.
S. 208,
306 U. S.
228-230;
Ethyl Gasoline Corp. v. United States,
309 U. S. 436,
309 U. S. 456,
and the use of it to suppress competition in the sale of an
unpatented article may deprive the patentee of the aid of a court
of equity to restrain an alleged infringement by one who is a
competitor. It is the established rule that a patentee who has
granted a license on condition that the patented invention be used
by the licensee only with unpatented materials furnished by the
licensor may not restrain as a contributory infringer one who sells
to the licensee like materials for like use.
Motion Picture
Patents Co. v. Universal Film Mfg. Co., 243 U.
S. 502,
243 U. S. 510;
Carbice Corp. v. American Patents Development
Page 314 U. S. 492
Corp., supra; Leitch Mfg. Co. v. Barber Co., supra; cf.
United Shoe Machinery Corp. v. United States, 258 U.
S. 451,
258 U. S. 462;
International Business Machines Corp. v. United States,
298 U. S. 131,
298 U. S.
140.
The grant to the inventor of the special privilege of a patent
monopoly carries out a public policy adopted by the Constitution
and laws of the United States, "to promote the Progress of Science
and useful Arts, by securing for limited Times to . . . Inventors
the exclusive Right . . . " to their "new and useful" inventions.
United States Constitution, Art. I, § 8, cl. 8; 35 U.S.C.
§ 31. But the public policy which includes inventions within
the granted monopoly excludes from it all that is not embraced in
the invention. It equally forbids the use of the patent to secure
an exclusive right or limited monopoly not granted by the Patent
Office and which it is contrary to public policy to grant.
It is a principle of general application that courts, and
especially courts of equity, may appropriately withhold their aid
where the plaintiff is using the right asserted contrary to the
public interest.
Virginian R. Co. v. System Federation,
300 U. S. 515,
300 U. S. 552;
Central Kentucky Co. v. Railroad Commission, 290 U.
S. 264,
290 U. S.
270-273;
Harrisonville v. Dickey Clay Mfg. Co.,
289 U. S. 334,
289 U. S.
337-338;
Beasley v. Texas & Pacific Ry.
Co., 191 U. S. 492,
191 U. S. 497;
Securities & Exchange
Comm'n v. U.S. Realty Co., 310 U.
S. 434,
310 U. S. 455;
United States v. Morgan, 307 U. S. 183,
307 U. S. 194.
Respondent argues that this doctrine is limited in its application
to those cases where the patentee seeks to restrain contributory
infringement by the sale to licensees of competing unpatented
article, while here, respondent seeks to restrain petitioner from a
direct infringement, the manufacture and sale of the salt tablet
depositor. It is said that the equitable maxim that a party seeking
the aid of a court of equity must come into court with clean hands
applies only to the plaintiff's wrongful conduct in the particular
act or transaction which raises the
Page 314 U. S. 493
equity enforcement of which is sought; that where, as here, the
patentee seeks to restrain the manufacture or use of the patented
device, his conduct in using the patent to restrict competition in
the sale of salt tablets does not foreclose him from seeking relief
limited to an injunction against the manufacture and sale of the
infringing machine alone.
Undoubtedly "equity does not demand that its suitors shall have
led blameless lives,"
Loughran v. Loughran, 292 U.
S. 216,
292 U. S. 229;
cf. Keystone Driller Co. v. General Excavator Co.,
290 U. S. 240,
290 U. S.
241-245; but additional considerations must be taken
into account where maintenance of the suit concerns the public
interest, as well as the private interests of suitors. Where the
patent is used as a means of restraining competition with the
patentee's sale of an unpatented product, the successful
prosecution of an infringement suit, even against one who is not a
competitor in such sale, is a powerful aid to the maintenance of
the attempted monopoly of the unpatented article, and is thus a
contributing factor in thwarting the public policy underlying the
grant of the patent. Maintenance and enlargement of the attempted
monopoly of the unpatented article are dependent to some extent
upon persuading the public of the validity of the patent, which the
infringement suit is intended to establish. Equity may rightly
withhold its assistance from such a use of the patent by declining
to entertain a suit for infringement, and should do so at least
until it is made to appear that the improper practice has been
abandoned and that the consequences of the misuse of the patent
have been dissipated.
Cf. B.B. Chemical Co. v. Ellis,
post, p.
314 U. S. 495.
The reasons for barring the prosecution of such a suit against
one who is not a competitor with the patentee in the sale of the
unpatented product are fundamentally the same as those which
preclude an infringement suit against a licensee who has violated a
condition of the license by using with the licensed machine a
competing
Page 314 U. S. 494
unpatented article,
Motion Picture Patents Co. v. Universal
Film Mfg. Co., supra, or against a vendee of a patented or
copyrighted article for violation of a condition for the
maintenance of resale prices,
Adams v.
Burke, 17 Wall. 453;
Bobbs-Merrill Co. v.
Straus, 210 U. S. 339;
Bauer & Cie. v. O'Donnell, 229 U. S.
1;
Straus v. Victor Talking Machine Co.,
243 U. S. 490;
Boston Store v. American Graphophone Co., 246 U. S.
8;
cf. United States v. General Electric Co.,
272 U. S. 476,
272 U. S. 485.
It is the adverse effect upon the public interest of a successful
infringement suit in conjunction with the patentee's course of
conduct which disqualifies him to maintain the suit, regardless of
whether the particular defendant has suffered from the misuse of
the patent. Similarly equity will deny relief for infringement of a
trademark where the plaintiff is misrepresenting to the public the
nature of his product either by the trademark itself or by his
label.
Manhattan Medicine Co. v. Wood, 108 U.
S. 218;
Worden & Co. v. California Fig Syrup
Co., 187 U. S. 516;
Leather Cloth Co. v. American Leather Cloth Co., 11
H.L.Cas. 523, 541-545;
see also, for application of the
like doctrine in the case of copyright,
Edward Thompson Co. v.
American Law Book Co., 122 F. 922, 926;
Stone &
McCarrick v. Dugan Piano Co., 220 F. 837, 841, 843. The
patentee, like these other holders of an exclusive privilege
granted in the furtherance of a public policy, may not claim
protection of his grant by the courts where it is being used to
subvert that policy.
It is unnecessary to decide whether respondent has violated the
Clayton Act, for we conclude that, in any event, the maintenance of
the present suit to restrain petitioner's manufacture or sale of
the alleged infringing machines is contrary to public policy, and
that the district court rightly dismissed the complaint for want of
equity.
Reversed.
MR. JUSTICE ROBERTS took no part in the decision of this
case.