Where a patent is infringed by selling machines embodying
improvements covered by the patent and the value of the machines as
marketable articles is attributable in part to the patented
improvements and in part to unpatented parts or features, the
profits arising from the infringing sales belong to the owner of
the patent insofar as they are attributable to the patented
improvements, and insofar as they are due to the other parts or
features, they belong to the seller.
Upon an accounting in a suit for such infringement the
commingled profits resulting from selling the machines in completed
and operative form should be separated or apportioned between what
was covered by the patent and what was not covered by it.
If the plaintiff's patent covered only a part of the infringing
machine and created only a part of the profits, he is required to
take the initiative in presenting evidence looking to an
apportionment.
In an apportionment of profits, mathematical exactness is not
indispensable, reasonable approximation being what is required, and
it usually may be attained through the testimony of experts and
persons informed by observation and experience.
The result to be accomplished by an apportionment is a
rational
Page 235 U. S. 642
separation of the net profits so that neither party may have
what rightfully belongs to the other.
Where damages are sought for infringing sales and it does not
appear that the plaintiff thereby lost the sale of a like number of
machines or of any definite or even approximate number, no adequate
basis is laid for an assessment of damages upon the ground of lost
sales.
As the exclusive right conferred by a patent is property and
infringement of it is a tortious taking of a part of that property,
the normal measure of damages is the value of what was taken, and
this may be shown by proof of an established royalty, if there be
such, and, if not, by proof of what would have been a reasonable
royalty considering the nature of the invention, its utility and
advantages, and the extent of the use involved.
Coupe v.
Royer, 155 U. S. 565,
explained.
The right conferred by a patent under our law is confined to the
United States and its territories, and infringement cannot be
predicated of acts wholly done in a foreign country.
In the particular circumstances of this case, the decree,
although ordinarily requiring affirmance, is reversed in order that
there may be an opportunity to produce further evidence upon the
accounting and to take other proceedings in conformity with this
Court's opinion.
183 F. 314 reversed.
The facts, which involve the construction and application of
certain provisions of the patent laws of the United States in
regard to liability for infringement, are stated in the
opinion.
MR. JUSTICE VAN DEVANTER delivered the opinion of the Court.
We have here to review two decrees dealing with an accounting of
profits and an assessment of damages resulting from the
infringement of a patent granted
Page 235 U. S. 643
February 10, 1891, for certain "new and useful improvements in
grain drills, commonly known as "shoe drills." The suits wherein
these decrees were rendered were both brought by the same
plaintiff, but were against different defendants, charged with
separate infringement. The plaintiff, besides owning the patent,
was manufacturing and selling drills embodying the patented
improvements, and the defendants, who were wholesale dealers in
agricultural implements, were selling drills embodying
substantially the same improvements. The drills made by the
plaintiff were sold under the name "Dowagiac," and the names
McSherry" and "Peoria" were applied to most of the others. The
defendants purchased from manufacturers who, as has since been
settled, were infringing the plaintiff's rights. At an early stage
in the litigation, the validity of the patent was sustained, the
defendants were held to be infringers, further infringement by them
was enjoined, and the cases were referred in the usual way for an
accounting of profits and an assessment of damages. 108 F. 67, 118
F. 136. Upon the evidence submitted, the masters reported that the
recovery should be limited to nominal damages, and their reports
were confirmed by the circuit court. Its action was affirmed by the
circuit court of appeals. 183 F. 314.
The conclusion that the recovery should be thus restricted was
rested upon these grounds: first, that the patent was not for a new
and operative drill, but only for designated improvements in a type
of drill then in use and well known; second, that the value of
drills embodying this invention, as marketable machines, was not
wholly attributable to the designated improvements, but was due in
a material degree to other essential parts which were not patented;
third, that the plaintiff failed to carry the burden rightly
resting upon it of submitting evidence whereby the profits from the
sale of the infringing drills
Page 235 U. S. 644
could be apportioned between the patented improvements and the
unpatented parts; and, fourth, that, although the number of sales
made by the defendants was disclosed, the evidence did not present
other data essential to an assessment of the damage sustained by
the plaintiff by reason of the defendants' infringement.
Partly because another circuit court of appeals seemingly had
reached a different conclusion in other litigation arising out of
this patent (
see McSherry Co. v. Dowagiac Co., 160 F. 948,
163 F. 34;
Brennan & Co. v. Dowagiac Co., 162 F. 472),
and partly because of the importance of the questions involved,
writs of certiorari were granted, requiring that these cases be
certified here for review and determination.
See Judicial
Code, § 240.
Since the writs were granted, the rules bearing upon the
apportionment of profits in such cases, the relative obligations of
the parties to submit evidence looking to an apportionment, and the
character of evidence which may be submitted, have been extensively
considered and comprehensively stated in
Westinghouse Co. v.
Wagner Co., 225 U. S. 604.
What was said there materially lessens our present task.
At the outset, it should be observed that, while the defendants
were infringers and bound to respond as such to the plaintiff,
their infringement was not wanton or willful. The masters and the
courts below expressly so found, and the evidence sustained the
finding. The defendants therefore were not in the situation of the
infringing manufacturer in
Brennan & Co. v. Dowagiac
Co., 162 F. 472, of whom the Circuit Court of Appeals for the
Sixth Circuit said (p. 476): "It has made and sold these infringing
drills with a purpose to imitate the patentee's construction."
It is quite plain, as we think, that the patent was not for a
new and operative grain drill, but only for particular
Page 235 U. S. 645
improvements in a type of grain drill then in use and well
known. The invention was so described in the specifications forming
part of the patent. The inventor there said:
"This invention relates to new and useful improvements in grain
drills commonly known as 'shoe drills,' and it consists in a
certain construction and arrangement of parts, as hereinafter more
fully set forth, the essential features of which being pointed out
particularly in the claims."
"The object of the invention is to provide an independent spring
pressure for each of the shoes and covering wheels of the drill,
whereby the work of the drill is rendered efficient in uneven
ground, and to provide means whereby said shoes and covering wheels
may be raised from the ground when the implement is not in use, or
when transporting it from one field to another."
In keeping with this statement, the claims in the patent were
limited to a suitable construction and arrangement of spring
pressure rods in combination with certain correlated elements of
the seeding part of a grain drill -- the part which opens the
furrows, guides the seed into them, and then closes them. Of
course, this was an important part, but it was only that, for other
parts were required to complete the machine and make it operative.
Some of these were simple and easily supplied, such as the tongue
and attachments to which the horses were hitched. Others were
complex, and required careful adjustment. This was especially true
of the feeding mechanism, whereby the grain was fed from the feed
box or reservoir into the several hoppers in continuous, uniform,
and precisely measured streams so that it might be deposited in the
furrows evenly and in suitable quantity. Only when all the parts
were present and so adjusted as to perform their respective
functions was the drill a practical and successful machine. In this
respect, no change resulted from the invention covered by the
patent. It effected material
Page 235 U. S. 646
improvements in one part, but did not obviate or diminish the
necessity for the others.
We think the evidence, although showing that the invention was
meritorious and materially contributed to the value of the
infringing drills as marketable machines, made it clear that their
value was not entirely attributable to the invention, but was due
in a substantial degree to the unpatented parts or features. The
masters and the courts below so found, and we should hesitate to
disturb their concurring conclusions upon this question of fact,
even had the evidence been less clear than it was.
Insofar as the profits from the infringing sales were
attributable to the patented improvements, they belonged to the
plaintiff, and insofar as they were due to other parts or features,
they belonged to the defendants. But, as the drills were sold in
completed and operative form, the profits resulting from the
several parts were necessarily commingled. It was essential,
therefore, that they be separated or apportioned between what was
covered by the patent and what was not covered by it, for, as was
said in
Westinghouse Co. v. Wagner Co., supra, (p.
225 U. S.
615): "In such case, if plaintiff's patent only created
a part of the profits, he is only entitled to recover that part of
the net gains." In the nature of things, the profits pertaining to
the patented improvements had to be ascertained before they could
be recovered by the plaintiff, and therefore it was required to
take the initiative in presenting evidence looking to an
apportionment. Referring to a like situation, it was said in the
case just cited (p.
225 U. S.
617):
"The burden of apportionment was then logically with the
plaintiff, since it was only entitled to recover such part of the
commingled profits as was attributable to the use of its
invention."
But the plaintiff did not conform to this rule. It neither
submitted evidence calculated to effect an apportionment nor
attempted to show that one was impossible, and this although
the
Page 235 U. S. 647
evidence upon the accounting went far towards showing that there
was no real obstacle to a fair apportionment. Certainly no obstacle
was interposed by the defendants. It well may be that mathematical
exactness was not possible, but, as is shown in
Westinghouse
Electric Co. v. Wagner Co. supra, (pp.
225 U. S. 617,
225 U. S.
620-622), that degree of accuracy is not required, but
only reasonable approximation, which usually may be attained
through the testimony of experts and persons informed by
observation and experience. Testimony of this character is
generally helpful, and at times indispensable, in the solution of
such problems. Of course, the result to be accomplished is a
rational separation of the net profits so that neither party may
have what rightfully belongs to the other, and it is important that
the accounting be so conducted as to secure this result if it be
reasonably possible. As was said in
Tilghman v. Proctor,
125 U. S. 136,
125 U. S.
145:
"It is inconsistent with the ordinary principles and practice of
courts of chancery either, on the one hand, to permit the wrongdoer
to profit by his own wrong or, on the other hand, to make no
allowance for the cost and expense of conducting his business, or
to undertake to punish him by obliging him to pay more than a fair
compensation to the person wronged."
Coming to the question of damages,
* we think the
masters and the courts below were right in holding that the
evidence did not present sufficient data to justify an assessment
of substantial damages.
Page 235 U. S. 648
While the number of drills sold by the defendants was shown,
there was no proof that the plaintiff thereby lost the sale of a
like number of drills or of any definite or even approximate
number. During the period of infringement, several other
manufacturers were selling drills in large numbers in the same
localities in direct competition with the plaintiff's drill, and,
under the evidence, it could not be said that, if the sales in
question had not been made, the defendants' customers would have
bought from the plaintiff, rather than from the other
manufacturers. Besides, it did not satisfactorily appear that the
plaintiff possessed the means and facilities requisite for
supplying the demands of its own customers and of those who
purchased the infringing drills. There was therefore no adequate
basis for an assessment of damages upon the ground of lost
sales.
As the exclusive right conferred by the patent was property, and
the infringement was a tortious taking of a part of that property,
the normal measure of damages was the value of what was taken. So,
had the plaintiff pursued a course of granting licenses to others
to deal in articles embodying the invention, the established
royalty could have been proved as indicative of the value of what
was taken , and therefore as affording a basis for measuring the
damages.
Philp v. Nock,
17 Wall. 460,
84 U. S. 462;
Birdsall v. Coolidge, 93 U. S. 64,
93 U. S. 70;
Clark v. Wooster, 119 U. S. 322,
119 U. S. 326;
Tilghman v. Proctor, 125 U. S. 136,
125 U. S. 143.
But, as the patent had been kept a close monopoly, there was no
established royalty. In that situation, it was permissible to show
the value by proving what would have been a reasonable royalty,
considering the nature of the invention, its utility and
advantages, and the extent of the use involved. Not improbably,
such proof was more difficult to produce, but it was quite as
admissible as that of an established royalty. In
Suffolk
Co. v. Hayden, 3 Wall. 315,
70 U. S. 320, where
a like situation was presented, this Court
Page 235 U. S. 649
said that, "in order to get at a fair measure of damages, or
even an approximation of it, general evidence must necessarily be
resorted, to."
See also Packet Co. v.
Sickles, 19 Wall. 611,
86 U. S. 617;
Root v. Railway, 105 U. S. 189,
105 U. S. 198.
And, in many cases in the other federal courts, the damages have
been assessed upon proof of a reasonable royalty. The practice is
illustrated by the following extract from the opinion in
Hunt
v. Cassiday, 64 F. 585, 587:
"The plaintiff was clearly entitled to damages for the
infringement. If there had been an established royalty, the jury
could have taken that sum as the measure of damages. In the absence
of such royalty, and in the absence of proof of lost sales or
injury by competition, the only measure of damages was such sum as,
under all the circumstances, would have been a reasonable royalty
for the defendant to have paid. This amount it was the province of
the jury to determine. In so doing, they did not make a contract
for the parties, but found a measure of damages."
True, some courts have regarded
Coupe v. Royer,
155 U. S. 565, as
impliedly holding that this practice was not permissible, but the
decision does not admit of such an interpretation. In that case --
an action at law -- there was no proof of what would have been a
reasonable royalty, but only of what the defendant had made or
might have made out of the infringement, and all that the court
held was (a) that the damages were not to be measured by what the
defendant had gained or might have gained, but by what the
plaintiff had lost, and (b) that, as the evidence disclosed "no
license fee, no impairment of the plaintiff's market, in short, no
damages of any kind," the verdict could not exceed a nominal sum.
In
Cassidy v. Hunt, 75 F. 1012, where the scope of that
decision was carefully considered by one of the circuit judges for
the Ninth Circuit, the conclusion was reached that it did not
militate against an assessment of damages upon the basis of what
would have been
Page 235 U. S. 650
a reasonable royalty, and a like view was expressed and applied
by the Circuit Court of Appeals for the Third Circuit in
McCune
v. Baltimore & O. R. Co., 154 F. 63, and
Bemis Car Co.
v. Brill, 200 F. 749, 762, and by the Circuit Court of Appeals
for the Sixth Circuit in
United States Frumentum Co. v.
Lauhoff, 216 F. 611. But, although the plaintiff was entitled
to prove what would have been a reasonable royalty, and thereby
show a proper basis for an assessment of damages, no proof upon
that subject was presented.
There are still other grounds upon which damages may be assessed
in infringement cases, as where hurtful competition is shown, but
the present record does not require that they be specially
noticed.
Some of the drills, about 261, sold by the defendants were sold
in Canada, no part of the transaction occurring within the United
States, and, as to them, there could be no recovery of either
profits or damages. The right conferred by a patent under our law
is confined to the United States and its territories (Rev.Stat. §
4884), and infringement of this right cannot be predicated of acts
wholly done in a foreign country.
See United Dictionary Co. v.
Merriam Co., 208 U. S. 260,
208 U. S. 265.
The case of
Manufacturing Co. v. Cowing, 105 U.
S. 253, is cited as holding otherwise, but is not in
point. There, the defendant made the infringing articles in the
United States. Here, while they were made in the United States,
they were not made by the defendants. The latter's infringement
consisted only in selling the drills after they passed out of the
makers' hands. The place of sale is therefore of controlling
importance here.
Ordinarily what has been said would lead to an affirmance of the
decrees below. But there are special reasons why a final
disposition of the cases should not be made upon the present record
at this time. The patent was valid, and the invention meritorious.
The infringing sales
Page 235 U. S. 651
covered 2,500 or more drills, the profits were substantial, and
the damages, if rightly measured, were evidently more than nominal.
The hearings before the masters were had prior to the decision in
Westinghouse Co. v. Wagner Co., supra, at a time when the
decisions bearing upon the apportionment of profits, as also upon
the admeasurement of damages, were not harmonious, and this
resulted in the evidence being so imperfectly presented as not to
afford the data requisite to a final adjustment of the matters in
controversy according to their merits.
The decrees are accordingly reversed, without costs, with
directions to recommit the cases to a master in order that the
questions involved in the original reference may be heard anew upon
the evidence heretofore taken and such further evidence as may be
submitted, and for further proceedings in conformity with this
opinion.
Decrees reversed.
MR. JUSTICE McREYNOLDS did not participate in the consideration
or decision of these cases.
* Rev.Stat. § 4921 provides that,
"upon a decree being rendered in any such case for an
infringement, the complainant shall be entitled to recover, in
addition to the profits to be accounted for by the defendant, the
damages the complainant has sustained thereby, and the court shall
assess the same or cause the same to be assessed under its
direction. And the court shall have the same power to increase such
damages, in its discretion, as is given to increase the damages
found by verdicts in actions in the nature of actions of trespass
upon the case."
See Birdsall v. Coolidge, 93 U. S.
64,
93 U. S. 69;
Tilghman v. Proctor, 125 U. S. 136,
125 U. S.
148.