The claim of letters patent No. 149,904, granted April 21, 1874,
to Herman Royer, for an "improvement in the modes of preparing
rawhide for belting," namely, "the treatment of the prepared
rawhide in the manner and for the purposes set forth," is a claim
to the entire process described, consisting of eight steps,
including the removal of the hair by sweating.
Having put in a claim, in the course of his application, to the
mode of preparing rawhides by the fulling operation and the
preserving mixture, and that claim having been rejected and then
withdrawn, and having also claimed the prepared rawhide as a new
article of manufacture, and that claim having been rejected and
then struck out by him, his patent cannot be construed as if it
still contained such claims.
As the defendants did not use the sweating process, they did not
infringe.
The case is stated in the opinion.
MR. JUSTICE BLATCHFORD delivered the opinion of the Court.
This is a suit in equity, brought in the Circuit Court of the
United States for the District of Massachusetts, by Herman
Page 146 U. S. 525
Royer against William Coupe and Edwin A. Burgess, co-partners
under the name of William Coupe & Co., founded on the
infringement of letters patent No. 149,954, granted April 21, 1874,
to the plaintiff, as inventor, for an "improvement in the modes of
preparing rawhide for belting," on an application filed December
31, 1872.
The specification of the patent is as follows:
"After the removal of the hair from the hide by means of
sweating -- a process familiar to every tanner -- the hide is dried
perfectly hard. Then it is inserted in water for ten to fifteen
minutes, long enough to lose its extreme stiffness. In this
condition, the process of fulling is commenced. This may be done in
a machine constructed for this purpose, and patented by me May 12,
1868, under No. 77,920. Before the hide is passed into the machine
the second time, it is stuffed with a mixture of twenty parts
tallow, two parts wood tar, and one part resin. About two pounds of
this mixture is put on a steer hide in a warm liquid state with a
brush. After the hide leaves the machine the second time, it is
ready for the next operation. It is then moistened with water four
or five times during the day. The next day it is stretched and cut
into pieces suitable for belting. For purposes of lacing, the
thinnest hides are selected, and, after they have gone through the
same mode of treatment as hides for belting, they are shaved,
oiled, and hung up to get perfectly dry, when the hide is cut into
strings. In order to more fully understand my mode of preparing
hides, I avoid the use of lime, acid, and alkali, for just to the
amount a hide is impregnated with such substances, it suffers in
its tensile strength and toughness; a slow but constant dissolution
is going on with hides so impregnated. If the effects of the
aforesaid substances are in some way neutralized, which must be a
chemical one, the hide suffers again in this process. The power to
resist abrasion, and the extreme tensile strength for which pure
rawhide is noted, are irreparably lost. [I am aware that hides and
skins have been prepared by a fulling or bending operation to
render them pliable, but this mode alone does not answer for the
preparation of machine belts and lacing. It is necessary to make
use of a preparation substantially
Page 146 U. S. 526
such as before described to render the rawhide fit for use and
durable.] The tallow has the effect of imparting a high degree of
elasticity, and keeps the moisture. The wood tar prevents dogs,
cats, mice, vermin, etc., from attacking the hide, at the same time
causing the tallow to enter the hide quickly and thoroughly. The
resin gives the belting a certain solidity and glossy appearance,
and assists also in preventing animals and vermin from attacking
the belting. Belts and lacing made of such prepared hide are in all
respects stronger, more lasting, and cheaper than those made from
common leather."
The claim is as follows: "The treatment of the prepared rawhide
in the manner and for the purposes set forth."
The bill of complaint is in the usual form. The answer sets up
want of novelty and noninfringement. It also avers that the process
set forth in the patent is composed of a series of steps,
consisting of (1) the removal of the hair from the hide by means of
sweating; (2) drying the hide perfectly hard; (3) then softening
the hide slightly by soaking in water; (4) fulling the hide; (5)
stuffing the hide with twenty parts of tallow, two parts of wood
tar, and one part of resin; (6) fulling the hide a second time; (7)
repeated moistenings with water, and (8) stretching and cutting
into belting. It avers that the supposed importance of the
plaintiff's alleged invention is the avoidance of the use of lime,
acid, or alkali in the treatment of the hides, and the consequent
avoidance of the use of any chemical agents to neutralize the
action of such lime, acid, or alkali; that the process employed by
the defendants is substantially different from that of the patent;
that the process of removing hair by sweating the hide was known
and practiced long before the supposed invention of the plaintiff;
that the process of fulling hides is indispensable, and has been
practiced ever since the art of tanning and curing hides was known;
that the process of stuffing hides with tallow and greasy
substances, and with various admixtures of resinous substances,
tallow, and other materials, had been known from the earliest days
of the art of manufacturing leather, and that a patent was granted
to the defendant William Coupe,
Page 146 U. S. 527
No. 182, 106, September 12, 1876, for an improvement in process
for the manufacture of rawhide, under which the defendants carry on
their manufacture and make a different product from that produced
by the process of the plaintiff's patent. Issue was joined, proofs
were taken, and the circuit court entered a decree in March, 1889,
dismissing the bill, with costs. The plaintiff has appealed to this
Court.
The opinion of the circuit court is reported in 38 F. 113. It
held that the process of the patent consisted of the series of
eight steps above set forth in the answer. It considered the
questions whether the claim was intended to cover all or only a
part of the eight successive steps, and whether it meant the method
of preparing rawhide in the manner set forth, or whether the words
in the claim "prepared rawhide" signified a hide which had had been
subjected to one or more of the eight steps, and the claim was
limited to the subsequent steps of the process. The court went on
to say that that inquiry was important because, if the claim
covered all of the eight steps, the defendants did not infringe it
for the reason that they did not use the first step of the process
-- namely the removal of the hair from the hide by means of
sweating, they making use for that purpose of the liming process,
which the plaintiff stated in his specification must be avoided.
The court held that the claim covered, and was intended to cover,
the whole treatment described by the plaintiff, and not a part of
that treatment; that the claim meant the same as if it read "the
method of preparing rawhide in the manner set forth," and that the
words "prepared rawhide" meant the finished product, and not the
hides subjected to one or more of the steps of the process
described. The court then referred to the contents of the file
wrapper of the case in the Patent Office as throwing light upon the
real scope of the patent.
The specification as originally filed contained in its
descriptive part substantially the same description as the patent
when issued, but the claim originally made was in these words:
"The use of a mixture of wood tar, resin, and tallow, applied to
hides made into leather by a mechanical process, substantially
Page 146 U. S. 528
as and for the purpose herein set forth."
The application was rejected January 4, 1873, on the ground that
the combination of ingredients set forth -- that is, wood tar,
resin, and tallow -- had been applied to leather for similar
purposes, as shown in a patent and a rejected application referred
to. On June 10, 1873, the specification was amended by inserting
the two sentences which are contained in brackets in the
specification as hereinbefore set forth, the claim was erased, and
the following two claims were inserted in its place:
"First, the mode herein specified of preparing rawhides for
machine belts, lacing, or ropes by the fulling or bending operation
and the preserving mixture, substantially as set forth; second, a
belt or rope of rawhide prepared in the manner and with the
material specified, as a new article of manufacture."
The application was again rejected, June 16, 1873, in a
communication from the Patent Office, which stated that the only
feature of novelty presented which was not embraced in a patent
granted May 12, 1868, to Herman Royer and Louis Royer, No. 77,920,
for an improved machine for treating hides was the addition to the
compound of tar and resin as ingredients for preserving leather,
and reference was made to another prior patent, granted to another
person, as embracing such ingredients, and it was stated that the
use of the compound claimed by the plaintiff in the manufacturing
process would not leave a distinguishable feature in the article
when placed upon the market.
The patent of May 12, 1868, thus referred to is the same patent
of that date mentioned in the specification of the patent now in
suit. The specification of No. 77,920 says:
"The nature of our invention is to provide an improved machine
for converting rawhides into leather of that class which is used
for belting, lacings, and other purposes, where it is necessary to
preserve the native strength and toughness without destroying or
impairing the natural fibres or grain of the leather. In order to
accomplish our object, we employ a machine mounted on a suitable
frame, having a vertical slotted shaft, to which is attached at its
base a beveled wheel between two beveled pinions upon a horizontal
shaft.
Page 146 U. S. 529
Around the vertical shaft is placed a row of vertical pins or
rollers, held in place by upper and lower rings, one of which is
firmly bolted to the frame. An iron weight or press is employed for
crowding the coil of hide down after it has received the forward
and back action around the shaft."
The specification describes the operation of the machine as
being that the end of the rawhide, after it has been deprived of
the hair, is introduced into a slot in the vertical shaft, and set
screws are turned against it, when motion is imparted to the
machine, and the hide is wound tightly around the shaft; that when
this is accomplished, and sufficient time has elapsed, the shaft is
slowly reversed by throwing a second beveled opinion into gear,
when the hide commences to uncoil or double back from the shaft,
which, with the folding back and pressing against vertical pins or
rollers, produces the desired result of stretching in one way and
compressing, corrugating, or roughing in the opposite direction.
The specification further says: "The hide so operated upon is then
treated with oil and tallow in the usual way." The process of the
machine of patent No. 77,920 is called in the specification of No.
149,954 "the process of fulling."
In a communication from Royer's attorney to the Patent Office,
of October 9, 1873, it is stated that the material prepared
according to the plan of Royer, set forth in his application for
No. 149,954, is a superior article; that the use of tallow and tar
upon leather was old, but rawhide fulled was not leather, and that
the materials named acted with the rawhide very differently from
what they did with leather. The same communication erased the
second claim introduced June 10, 1873, namely: "Second, a belt or
rope of rawhide prepared in the manner and with the materials
specified, as a new article of manufacture." In response to that
letter, the Patent Office, on October 17, 1873, informed Royer
that, independently of the process set forth in patent No. 77,920,
"for which protection has already been granted," a claim for the
treatment of rawhide in the manner described in the specification
then pending might receive favorable consideration, and that the
body of the specification should be amended
Page 146 U. S. 530
with the view of presenting a claim of the character referred
to. On the 29th of October, 1873, Royer amended his specification
in certain particulars, erased the remaining claim, and inserted
the claim contained in the patent as issued. On the 12th of
November, 1873, in compliance with the suggestion of the Patent
Office, Royer further amended his specification, and the patent was
issued, the final fee not having been paid until April 16,
1874.
The opinion of the circuit court states that on June 10, 1873,
as appeared by the file wrapper and contents, the plaintiff sought
to limit his claim to a method of preparing rawhide for belting by
the fulling and bending operation and the preserving mixture; that
that claim was rejected, and he acquiesced in the decision; that
the Patent Office intimated that a claim for the treatment of
rawhide in the mode described in this patent might be allowed; that
the plaintiff accordingly amended his specification and claim in
conformity with that suggestion, and the patent was consequently
granted; that in view of the prior state of the art, the plaintiff
was not entitled to a broad claim for a process which should
embrace only the fulling and bending operation, and the preserving
mixture composed of tallow, tar, and resin, for both of these
things, as applied to converting hides into leather, were old; that
it followed that the only subject matter of invention which the
plaintiff could properly claim was the whole process described in
this patent, comprising the different steps therein set forth; that
the most that could be said of the plaintiff's patent was that it
was for an improved process; that, in that view, it must be shown
that the defendants used all the different steps of that process,
or there could be no infringement; that the defendants did not use
the sweating process, which was the first step in the plaintiff's
treatment, and therefore did not infringe; that the patent had been
construed by Judge Drummond, in the Circuit Court of the United
States for the Northern District of Illinois, in
Royer v.
Chicago Manufacturing Co., 20 F. 853, in which it was
said:
"If this is a valid patent for a process, it must be limited to
the precise, or, certainly, substantial, description which has been
given in the
Page 146 U. S. 531
specifications, and in order to constitute an infringement of
that process, a person must be shown to have followed substantially
the same process, the same mode of reaching the result as is
described in the specifications;"
that the court agreed with that conclusion; that, if the
contention of the counsel for the plaintiff were correct, that the
plaintiff had invented an entirely new process which had
revolutionized the art of preparing rawhide for belting and other
purposes, it might be that the court ought to give that broad
construction to the patent which was justified in the case of a
foundation patent; but that when, as in this case, all the
substantial steps in the process were old, the utmost that the
plaintiff was entitled to was protection against those who used, in
substance, his precise process.
We are of opinion that the views set forth by the circuit court
are sound, and that the decree must be affirmed. The words in the
claim, "prepared rawhide" refer to the completed article as
prepared for final use by the treatment set forth in the
specification, and the claim is one for the treatment or process by
which rawhide is put into the condition resulting from the
treatment it receives by the entire process applied to it. After
the hair is removed from the hide by the process of sweating, and
it has afterwards lost its stiffness by being inserted in water, it
is subjected to "the process of fulling," with a mixture of tallow,
wood tar, and resin applied to it. The specification states in
substance that Royer's mode of "preparing hides" comprehends, as a
part of such mode, the sweating of the hides, because the
specification states that in such mode of "preparing hides" he
avoids "the use of lime, acid, or alkali." Therefore the sweating
must necessarily be included as a part of the preparation "of the
prepared rawhide" mentioned in the claim, and therefore is a part
of "the treatment" claimed.
The plaintiff contends that the treatment covered by the claim
consists only in subjecting rawhide to a fulling process, and at
the same time, by the same mechanical action, working into it the
stuffing composed of tar, resin, and tallow, and that he was the
first to manufacture rawhides into a new article of commerce,
called "fulled rawhide."
Page 146 U. S. 532
If the plaintiff did make such an invention, and was entitled to
claim a patent for it, he has failed to secure such a patent. On
June 10, 1873, he put in a claim to the mode of preparing rawhides
by the fulling operation and the preserving mixture. That claim was
rejected by the Patent Office, and he withdrew it on October 29,
1873. Nor can he, under the present patent, claim as a new article
of manufacture the rawhide thus prepared, for he made that claim on
June 10, 1873; it was rejected, and he struck it out on October 9,
1873.
It is well settled by numerous cases in this Court that under
such circumstances, a patentee cannot successfully contend that his
patent shall be construed as if it still contained the claims which
were so rejected and withdrawn.
Roemer v. Peddie,
132 U. S. 313,
132 U. S. 317,
and cases there cited. The principle thus laid down is that where a
patentee, on the rejection of his application, inserts in his
specification, in consequence, limitations and restrictions for the
purpose of obtaining his patent, he cannot, after he has obtained
it, claim that it shall be construed as it would have been
construed if such limitations and restrictions were not contained
in it.
See also Caster Co. v. Spiegel, 133 U.
S. 360,
133 U. S. 368;
Yale Lock Co. v. Berkshire Bank, 135 U.
S. 342,
135 U. S. 379;
Dobson v. Lees, 137 U. S. 258,
137 U. S.
265.
The present patent was under consideration in
Royer v.
Schultz Belting Co., 40 F. 158, in October, 1889, in the
Circuit Court of the United States for the Eastern District of
Missouri, where Judge Thayer took the same view of it that was
taken by Judge Colt in the present case, and held that the claim of
the patent did not cover broadly the method of making belting
leather by stuffing the rawhide, by means of a fulling machine,
with a mixture composed of tallow, wood tar, and resin, and that as
the defendants in that case did not use the sweating process, but
used the liming process, they did not infringe. Judge Thayer gave
much force to the proceedings in the Patent Office as showing that
Royer modified his claim, which was so worded as to cover the
stuffing process with the preserving mixture, and put his claim
into its present form solely in view of a communication from the
Patent Office to
Page 146 U. S. 533
the effect that the whole method described by him of making
belting leather out of green hides might be patentable, thus
indicating the extent of the monopoly intended to be granted.
As the defendants in the present case to not use the sweating
process, but use the liming process, it follows, under the proper
construction of the claim of the patent, that they do not
infringe.
Decree affirmed.