It is the duty of a patentee, receiving letters patent for an
invention, to examine them within a reasonable time to ascertain
whether they fully cover his invention, and if he neglects so to do
for the period of three years, and the real invention is then found
to be infringed by a construction which is manufactured and sold
without infringing the patent as originally granted, he must suffer
the penalty of his own laches, and cannot, by means of a reissue,
correct the error.
Wollensak v. Reiher, 115 U. S. 96, and
Mahn v. Harwood, 112 U. S. 304,
affirmed and applied.
The reissue No. 9901, dated October 13, 1881, of letters patent
No. 202,158, dated April 9, 1878, and granted to Frank Davis for an
improvement in door bolts is void as containing new matter
introduced into the specification and as being for a different
invention from that described in the original patent.
This was a bill in equity to restrain the infringement of
letters patent. The case is stated in the opinion of the Court.
MR. JUSTICE MATTHEWS delivered the opinion of the Court.
This is a bill in equity filed by the appellant to restrain the
alleged infringement of the complainant's rights, as the assignee
of Frank Davis, of reissued letters patent No. 9,901, for an
improvement in door bolts. The original patent was No. 202,158,
dated April 9, 1878. The application for the reissue was filed
April 1, 1881, the reissued letters patent being dated October 18,
1881. The alleged infringement is of the third and fourth claims.
As the case turns wholly upon the validity of the reissued patent,
it is important, for purposes of comparison, to set out the
original and the reissue in parallel
Page 119 U. S. 653
columns [here, one after the other]. So much of the original as
is excluded from the reissue is marked in brackets, and the
additions made by the reissue are in italics. They are as
follows:
"
Original"
"Specifications forming part of letters patent No. 202, 158,
dated April 9, 1878. Application filed January 29, 1878."
"
To all whom it may concern:"
"Be it known that I, Frank Davis, of North Adams, in the County
of Berkshire and State of Massachusetts, have invented certain new
and useful improvements in door bolts, [and I do hereby declare
that] the following is a [full, clear, and exact] description [of
my invention, which will enable others skilled in the art to which
it appertains to make and use the same, reference being had to the
accompanying drawings and to letters of reference marked thereon,
which form a part of this specification]."
"[This invention is an improvement] on letters patent [No.
190,561] granted to [the undersigned] May 8, 1877."
"The [nature of said] invention consists [chiefly] in combining
a cylindrical outer casing with an inner [casing] constructed and
recessed as hereinafter described, said [casings] combining to
enclose the operating mechanism, and to form a fulcrum and guide
therefor, [and] in combining, with said [casings], a bolt, pitman,
and [hub so constructed and arranged as to operate in the same
without pivot pins or any additional devices, all as] hereinafter
more fully [described] and claimed."
"In the accompanying drawings, Fig. 1 [represents the device as
a whole] in perspective. Fig. 2 [represents] a perspective view of
the inner [casing and contents]. Fig. 3 is a [detail] view of the
bolt [and its attachments]. Fig. 4 is a detail view of the inner
[casing]. Fig. 5 is a detail view of the outer casing."
"[A designates a cylindrical metallic outer casing or sleeve,
which is provided with opposite openings
a a near its rear
end, and with a hole
a1 for attachment by means of screw
a2 to inner casing B."
"It is obvious that any known equivalent fastening may be
substituted for said screw. Said casing A is preferably a mere
shell of steel, but both the material and thickness can be
considerably varied without departing from my invention."
image:a
"Inner casing B is of brass, cast iron, or other cheap metal,
and has such diameter as allows it to pass readily into said outer
casing or sleeve, and to be conveniently withdrawn therefrom. It is
provided at the front end with a disk, which has a central opening
b for the passage of the bolt, and an annular flange
b1 which prevents it from being forced back too far within
said exterior casing. The bottom of said inner casing B has a broad
longitudinal slot
b2, extending from end to end, and
communicating with a similar longitudinal slot
b3, in the
top of said casing B, which extends about two-thirds of the length
of said casing, beginning just behind said front disk. The interior
of the forward part of said inner casing is thus entirely removed,
leaving vertical walls,
b4 b4 on each side of the space
thus produced. This space is separated by a transverse partition
b5 from a transverse groove
B6, in the bottom of
which is a longitudinal slot
b7. A transverse partition
b8 at the rear of said groove and slot forms part of the
rear end of casing B, and has in its top screw-threaded hole or
socket
b9 for the reception of fastening screw
a2."
"C designates the door bolt, having guide pins
c on its
side, and near its rear end a recess
c', in which works
the lower end of crank arm D', formed in one piece with flat hub D.
Said lower end of crank arm D' is connected by pitman E to the
front part of said bolt. Said hub D, when in position for use,
extends up through said slot
b7, so that its square or
similarly shaped central hole is in a line with transverse groove
b6 of inner casing B and opposite holes
a a of
outer casing A. The prismatic shank of the key is passed through
said holes and groove, and operated as usual to shoot or draw the
bolt."
"I do not confine myself to the exact details of construction
shown, as these may be somewhat modified in various ways without
departing from the spirit of my invention."
"The working parts of my mechanism are more firmly secured and
more perfectly protected than in my former patent, as hereinbefore
recited. I also deem the shape of my new hub and crank preferable
for practical working]."
"Having [thus] described my [invention], what I claim as new and
desire to protect by letters patent is:"
"1. The combination, with a door bolt and operating mechanism,
of a cylindrical exterior [casing], and a recessed inner [casing],
said [casings] combining to enclose the operating mechanism, and to
form a fulcrum and guide therefor, substantially as set forth."
"2. The combination of [casing] A having opposite holes
a
a with inner [casing] B, having transverse groove
b6
and slot
b7 [flat hub] D, [having crank arm D'] and the
bolt and pitman, substantially as set forth."
"[3. The combination of cylindrical outer casing A with inner
casing B, having annular front flange
b1, side walls
b4 b4, transverse partitions,
b5 and
b8,
transverse groove
b6 and slot
b7, said casings
being securely fastened together, and adapted to receive the bolt
and working mechanism, substantially as set forth]."
"
Reissue"
"Specification forming part of reissued letters patent No.
9,901, dated October 18, 1881. Original No. 202,158, dated April 9,
1878. Application for reissue filed April 1, 1881."
"
To all whom it may concern:"
"Be it known that I, Frank Davis, of North Adams, in the County
of Berkshire and State of Massachusetts, have invented certain new
and useful improvements in door bolts,
of which the
following is a description:"
"
The improvements are on the door bolt for which
letters patent
were granted to
me May 8,
1877."
"The invention consists in combining a cylindrical outer case
with an inner
case, constructed and recessed as
hereinafter described, said
cases combining to enclose the
operating mechanism, and to form a fulcrum and guide therefor; in
combining with said
cases a bolt, pitman, and
crank,
and in a pitman or connecting rod performing the functions of both
pitman and spring, as the above are hereinafter more fully
set forth and claimed."
"In the accompanying drawings Fig. 1
shows the bolt in
perspective; Fig. 2 is a perspective view of the inner
case and
portions of some of the working parts. Fig. 3 is a view of the
bolt,
spring and crank. Fig. 4 is a detail view of the
inner
case, and Fig. 5 is a detail view of the outer
case."
"@To enable others to make and use my improvements in door
bolts, I will describe them in detail."
"A, Figs. 1 and 5, is a cylindrical metallic outer case, having
the holes a a near its rear end, and hole a1, through which a screw
a2, Fig. 1, passes into the inner case B to hold the two cases
together. The inner cylindrical case B Figs. 2 and 4, is made to
fit closely into the outer case, and has on its front end a disk in
which is the central opening b. On its front end, the flange b1 is
formed, against which the outer case comes. A slot, b2, Fig. 4,
extends from the disk on the front end the whole length of the
case. Another slot, b3, opposite the slot b2, extends backward from
the end disk, as shown in Fig. 4. These slots leave the parts b4 b4
of the inner case as shown in Fig. 4. A groove b6 extends across
the case between the parts b5 and b8 of the case. A longitudinal
slot b7 bisects this groove, and is cut through the case."
"C, Fig. 3, is the bolt, made with the lugs c c only one of
which is used. The projecting end is round; the part within the
case is rectangular, one of the narrower sides fitting into the
slot b2 and the other into b3. Its rear end is made narrower and
thinner to make room for the crank, as shown in Fig. 3."
"The crank D is made in the usual form, and is arranged in a
position to bring the hole through its larger end in line with the
groove b6 on the inner case, and with the openings a a in the outer
case."
"The pitman and spring E, Fig. 3, is a straight hard drawn wire,
and is connected to the bolt and crank by suitable pivotal
connections. As shown in the drawings, its ends are bent at right
angles to its length, and pass into holes in the bolt and crank,
the spring being made long enough for the purpose. The lug c on the
bolt is so arranged, relative to the connections of the spring, as
to give it the required degree of tension or 'set up,' as it is
called. The tension bends the spring over the lug c, as shown in
Fig. 3. The key has its shank square, to fit the hole in the crank,
with a round part near the handle, to turn in the case, as shown in
Fig. 1.@"
"Having described my
improved bolt and its mode of
operation, what I claim as new, and desire to secure by
letters patent, is:"
"1. The combination, with a door bolt and operating mechanism,
of a cylindrical exterior
case and a recessed inner
case, said
cases combining to enclose the
operating mechanism, and to form a fulcrum and guide therefor,
substantially as set forth."
"2. The combination of case A, having opposite holes
a
a with inner
case B, having transverse groove
b6 and slot
b7,
crank D, and the bolt
and pitman, substantially as set forth."
"3.
The combination of the bolt C, provided with the
lug c,@ pitman E, operating as a pitman and spring, and crank
D to hold the bolt, substantially as set forth."
"4. In a cylindrical door bolt, the pitman E arranged and
adapted to operate as a pitman and spring, substantially as set
forth.@"
It will be observed that the first and second claims of the
reissued patent are substantially the same as the first and second
claims of the original patent; but as there is no allegation or
proof of any infringement by the appellee of either of these, they
may both be dismissed from further consideration. The third claim
of the original patent is omitted from the reissue, its place being
taken by the third and fourth claims of the latter. The whole
question is whether the patentee and his assignee are entitled,
under the circumstances of the case, to claim the pitman E,
operating as a pitman and spring in a door bolt, as a distinct and
separate invention, irrespective of its combination with the
exterior and interior cases mentioned in the first and second
claims. This right is affirmed by the appellant, and denied by the
appellee.
The invalidity of the reissued patent is maintained by the
appellee on two grounds: 1st, that the reissue embraces a
different
Page 119 U. S. 659
invention in the third and fourth claims from any described or
contained in the original specification, and 2d., that if it were
otherwise, the patentee and assignee had at the time of the
application for a reissue, lost their rights to correct the defects
in the original by their own laches. It was upon the latter of
these grounds that the circuit court proceeded in dismissing the
bill. The undisputed facts on this part of the case are stated by
the circuit court in its opinion, and are as follows:
"The inventor, a carpenter by trade, and not an educated man,
invented the device in November, 1877, and applied, in January,
1878, to Mr. Terry, a patent solicitor in New Haven, to procure him
a patent, specifying, as the invention to be patented, the pitman,
which, in connection with the crank, held the bolt, and answered
the double purpose of pitman and spring. Terry, being in ill
health, and therefore not then doing business, sent the case to his
agent in Washington, with Davis' instructions. In due time, the
papers were returned to Terry, and were signed by Davis, who read
them, and supposed that the application 'covered the spring, which
he intended to be patented.' Terry did not read the application.
The patent was received by Davis in April, 1878. It does not appear
whether it was then examined or not. The plaintiff did not see the
patent until after it was assigned to him, on May, 28, 1879.
Whether he then read it or not he does not know; but in the latter
part of 1880, after the defendant had begun to infringe, he did
read it, and supposed, from the drawings, that the pitman spring,
as a separate invention, was secured by the patent, until he was
undeceived by Mr. Terry. In the spring of 1878, the plaintiff
received from Davis a license to use the pitman spring upon another
than the patented bolt. In September, 1880, Sargent & Co.
commenced work upon the patterns for the infringing bolt, and made
the first bolts December 1, 1880."
Ives v. Sargent, 17 F. 447.
The application for the reissue was not made until after the
lapse of nearly three years from the date of the original patent;
that is, from April 9, 1878, until April 1, 1881. It may be
assumed, as the effect of the evidence, that Davis, in
Page 119 U. S. 660
describing to his solicitor. Terry, the invention which he
wished to have patented, specifically designated and described the
pitman spring as his substantial invention, distinct from the
combination of which it formed a part in the first and second
claims of the patent. In his testimony on this point, in answer to
the question, "What did you describe to him as the invention which
you wished to have patented?" Davis states:
"I explained to Mr. Terry that I had got the spring, answering
for a spring, and also for turning the bolt, a pitman spring. I
didn't know the term at that time."
And also that he wished to have patented "this pitman spring,
and this guard, lever, and that purchase it had in holding the bolt
out or back; also, in moving the bolt out and back." Terry, also,
on the same point, says, that Davis
"brought the invention or bolt to me, and stated that he wanted
to get it patented. He also stated what his invention was, as he
considered it, that he wanted patented, and the thing that he
wanted patented particularly was the pitman or connecting rod which
answered the double purpose of pitman and spring, and, in
connection with the crank, held the bolt when it was shoved out of
the case, and when it was drawn within the case."
Terry also states that he sent "a letter of instructions with
the model, setting forth Mr. Davis' wishes as he had expressed them
to me." The specification, as prepared by the solicitor in
Washington, was returned to Terry, and by him exhibited to Davis,
who signed the application, as he states, after he had examined it
and supposed it to be right, "covering the spring which I intended
to be patented." Mr. Terry states that he does not recollect
whether he himself read over the specification and examined the
claims at the time Mr. Davis signed the papers, or not. On this
application the patent was issued, and it does not appear to have
been read or examined by any of the parties is interest until after
the appellee commenced making the bolts now alleged to be an
infringement. It was then discovered for the first time that the
original patent did not cover the claim as now made, and the
reissue was obtained to effect that purpose.
It is admitted in argument by the counsel for the appellant
Page 119 U. S. 661
that there was negligence. It is contended, however, that it was
not the negligence which in law is imputable to the patentee or the
appellant, but the negligence of the solicitor employed by the
patentee to obtain the patent. Counsel say:
"It was the Washington solicitor's disobedience to instructions
which caused the mistake, and Terry's neglect to revise the
application before sending for Davis to sign it, which prevented
its discovery."
The rule of diligence required in such cases, as the result of
previous decisions of this Court, is stated in
Wollensak v.
Reiher, 115 U. S. 96,
115 U. S. 99, in
these words:
"It follows from this that if at the date of the issue of the
original patent, the patentee had been conscious of the nature and
extent of his invention, an inspection of the patent when issued,
and an examination of its terms, made with that reasonable degree
of care which is habitual to and expected of men in the management
of their own interests in the ordinary affairs of life, would have
immediately informed him that the patent had failed fully to cover
the area of his invention. And this must be deemed to be notice to
him of the fact, for the law imputes knowledge when opportunity and
interest, combined with reasonable care, would necessarily impart
it. Not to improve such opportunity, under the stimulus of self
interest, with reasonable diligence, constitutes laches, which in
equity disables the party who seeks to revive the right which he
has allowed to lie unclaimed from enforcing it to the detriment of
those who have in consequence been allowed to act as though it were
abandoned."
In
Mahn v. Harwood, 112 U. S. 354,
112 U. S. 362,
it was stated that
"If a patentee has not claimed as much as he is entitled to
claim, he is bound to discover the fact in a reasonable time, or he
loses all right to a reissue, and if the Commissioner of Patents,
after the lapse of such reasonable time, undertakes to grant a
reissue for the purpose of correcting the supposed mistake, he
exceeds his power, and acts under a mistaken view of the law. The
court, seeing this, has a right, and it is its duty, to declare the
reissue
pro tanto void in any suit founded upon it. "
Page 119 U. S. 662
It is also settled that, while no invariable rule can be laid
down as to what is a reasonable time within which the patentee
should seek for the correction of a claim which he considers too
narrow, a delay of two years, by analogy to the law of public use
before an application for a patent, should be construed equally
favorable to the public, and that excuse for any longer delay than
that should be manifest by the special circumstances of the case.
Wollensak v. Reiher, 115 U. S. 96,
115 U. S. 100;
Mahn v. Harwood, 112 U. S. 354,
112 U. S.
363.
In the present case, no special circumstances in excuse for the
delay are alleged. The excuse proffered is simply an attempt to
shift the responsibility of the mistake, as originally made, from
the patentee to his solicitor; but no excuse is offered why the
patentee did not discover the negligence and error of his solicitor
in due time. On the contrary, he assumed, without examination, that
the specification and claims of his patent were just what he had
desired and intended they should be, and rested quietly in
ignorance of the error and of his rights for nearly three years,
and then did not discover them until after others had discovered
that he had lost the right to repair his error by his neglect to
assert it within a reasonable time. We are therefore of opinion
that the circuit court was clearly in the right in deciding the
reissue void as to the third and fourth claims, on the ground that
the right to apply for it had been lost by the laches of the
patentee and his assignee.
We are also of opinion, however, that the reissue is void on the
other ground,
viz., that it contains new matter introduced
into the specification, and that it is not for the same invention
as that described in the original patent. In support of the
reissued patent, on this ground, it is contended on the part of the
appellant, that the invention of the pitman spring device is shown
in the drawings, which are the same both in the original and the
reissued patents. All that can be said in respect to the drawings
is that they show the pitman spring device as a part of the bolt
intended to be covered by the patent, and described as a
combination of which that device forms a part. There is nothing
whatever in the drawings to
Page 119 U. S. 663
show that the patentee claimed to be the inventor of that part,
separate from the combination, as a distinct novelty, useful by
itself, or in any other combination; neither is it so described in
the specification. The operating mechanism of the bolt, as distinct
from the casings, which are described as forming a fulcrum and
guide to it, is described as "a bolt, pitman, and hub so
constructed and arranged as to operate in the same [said casings]
without pivot pins or any additional devices." It is argued, on
this language, that the only additional device usual in such cases
is a spring, and that therefore the meaning of the specification is
that no separate spring was required, and from that the inference
is to be made that the pitman should operate both as a pitman and a
spring; but this inference is entirely too obscure and remote. It
is not obvious that the additional device referred to was a spring,
and there is nothing in the language to suggest, what is clearly
and fully expressed in the amended specification, that "the pitman
and spring E, Fig. 3, is a straight, hard drawn wire, and is
connected to the bolt and crank by suitable pivotal connections."
So that in the original description there is nothing to show of
what material the pitman is made so as to operate as a spring, and
there is no assertion in it of its performing the double function
of pitman and spring.
In this view therefore the case comes within the rule as stated
in
Coon v. Wilson, 113 U. S. 268,
113 U. S. 277.
There, as here, the lapse of time, and laches based upon it, were
considered immaterial, because the reissued patent was for a
different invention from that described in the original.
"The description had to be changed in the reissue, to warrant
the new claims in the reissue. The description in the reissue is
not a more clear and satisfactory statement of what is described in
the original patent, but is a description of a different
thing."
We are therefore constrained to the conclusion that the addition
of the third and fourth claims, with the corresponding alterations
in the specification, is such an expansion of the invention as
originally described as to destroy its identity, and to that extent
to avoid the reissued patent.
For these reasons, the decree of the circuit court is
affirmed.