1. The application of an old process to a new and closely
analogous subject matter, plainly indicated by the prior art as an
appropriate subject of the process, is not invention. P.
294 U. S.
473.
2. Evidence of prompt acceptance and great utility in industry
of a patented method adds little weight to the claim of invention,
as opposed to mere mechanical skill, where the need satisfied was
not an old and recognized one, but arose only after the patent was
applied for and as the result of a public demand for an advance of
the art made possible by mechanisms subsequently developed and not
covered by the patent. P.
294 U. S.
474.
3. A defendant sued for patent infringement is not estopped to
set up the defense of no invention by reason of having himself
applied, unsuccessfully, for a patent covering the same claims. P
294 U. S.
476.
4. Patent No. 1,825,598, issued September 29, 1931, to Vogt
et al. (Claims 5-9, inclusive, and Claim 11) for "a
process for producing a combined sound and picture positive film,
for talking moving pictures," etc.,
held invalid for
anticipation and want of invention.
The process claimed is for combining sound and picture records
on a single film and comprises three steps: first, the simultaneous
photographing of a picture record and a record of the accompanying
sound, each on a separate negative; second, the separate
development of the two negatives in a manner appropriate to each,
and third, the printing, either simultaneously or successively,
from the two negatives of the sound record and the picture record
side by side on a single positive film. It does not embrace either
a method or a device for recording or for reproducing sound, or a
method of synchronizing the two records, or the use of a single
film in the reproduction of combined sound and picture records, or
any method or device for printing the positive record from the two
separate negatives. Every step in it is an application of the art
of photography: simultaneous exposure of the negatives, their
separate development, and printing
Page 294 U. S. 465
from them a single positive film. It is as applicable to any
other form of photographic record as to a photographic sound record
-- as effective in the production of the one as the other -- and
its importance to the sound picture industry arises only from the
fact that the single film, bearing the two records, for which no
patent is claimed, is of great utility in that industry.
71 F.2d 153 reversed
Certiorari, 293 U.S. 587, to review a decree sustaining a patent
in a suit for infringement. For the decision of the District Court
contra, see 4 F. Supp. 462. The patent was applied for
March 29, 1922.
MR. JUSTICE STONE delivered the opinion of the Court.
In this case, certiorari was granted to review a decree of the
Court of Appeals for the Second Circuit, 71 F.2d 153, which held
valid and infringed the process patent of Vogt and others, No.
1,825,598, of September 29, 1931, "for producing combined sound and
picture films." It reversed the District Court, which had held the
patent invalid for anticipation and want of invention. 4 F. Supp.
462. The several claims involved relate to a method of producing a
single photographic film by printing upon it a picture record and a
sound record from separately exposed and developed negatives. The
positive film thus produced is useful and extensively used in
reproducing sound and picture records in the exhibition of "talking
moving pictures."
Page 294 U. S. 466
The respondent, who was the plaintiff below, is a patent holding
company, and acquired the patent by assignment. The petitioner, who
was the defendant below, is a producer of motion pictures, and the
defense of the present suit has been conducted on its behalf by the
Electrical Research Products, Inc., a subsidiary of the Western
Electric Company.
In order that the precise nature of the claims may be
understood, it will be necessary first to describe briefly the
procedure and the mechanisms employed in recording and reproducing
talking motion pictures, although neither is embraced in the claims
of the patent. Several methods have been devised for recording
sound and reproducing it in connection with the exhibition of
motion pictures. A familiar one is the disc system, by which the
sound vibrations are mechanically recorded upon and reproduced from
discs by a stylus, which receives the sound vibrations for
recording and transmits them from the disc to a loud-speaker in
reproducing the sound.
Another method, important here, is the photographic film system,
in which the sound vibrations are recorded upon a photographic
record. In the typical procedure, used by the petitioner, the sound
waves to be recorded are received by a microphone so devised as to
produce variable electric currents whose variations correspond to
the variations in the sound waves received. The electric currents
thus produced are amplified and transmitted to two metal threads,
arranged side by side so as to form a narrow slit about 1/1000 of
an inch in width, called a light valve. The current produces
vibration of the metal threads with consequent variation of the
light passing through the valve exactly corresponding to the sound
vibrations to be recorded. In recording sound, a moving sensitized
photographic film is exposed to a beam of light passed through the
vibrating light valve which is activated by the electric currents
varying according to the sound vibrations. The
Page 294 U. S. 467
exposed film is then developed, and the "sound record" thus
produced is printed from it upon a positive film, where it appears
as a series of short parallel lines of varying light density,
corresponding to the sound vibrations, which have controlled in
turn the variation in the electric current passing to the light
valve and the corresponding variations of light passing through it
to the sensitized film.
In reproducing the recorded sound, the procedure is reversed.
The positive sound film is passed before a light slit, from which
the light passes through the sound record film to a photo-electric
cell, which is devised to produce a variable electric current
corresponding to the light variations caused by the moving record
film. The electric current thus produced is amplified and passed to
a loud-speaker, where it is translated into sound vibrations.
Successful operation of the talking motion picture involves
synchronization of the sound and picture records. The difficulties
of synchronization are obvious where the recorded picture and
sounds are separately reproduced by independent mechanisms. Success
has been achieved, and convenience in use of the two records
secured, by uniting them upon a single positive film and passing it
at the requisite uniform speed through a single apparatus designed
to reproduce both the sound and the picture. A familiar method of
securing the two records on a single film is by photographing
simultaneously the picture record and the sound record side by side
upon the same strip of film and then printing from the developed
negative a single positive film. This method was disclosed in the
Haines British patent, No. 18,057, of 1906; in the Ries patent,
United States No. 1,473,976, of 1923, applied for in 1913; in the
French patent to MacCarty, No. 448,757, of 1912, and in the Walker
patent, United States No. 1,186,717, of 1916. Another method is by
mechanically uniting the two positive records, as by cementing them
together, after they
Page 294 U. S. 468
have been separately printed from negatives separately exposed
and developed. This was disclosed by the Bullis patent, United
States No. 1,335,651, of March 30, 1920, applied for in 1915. A
third method, which is that claimed by the patent in suit, is by
printing the two records on a single positive film from separately
exposed and developed negatives.
In petitioner's practice, separate photographic films, moving at
uniform speed, are separately exposed, so as to record a scene and
the accompanying sounds, and are then separately developed. The two
records are then printed, side by side, on a single positive film,
used for reproducing the picture and the sound. In the typical
reproducing apparatus, the film passes successively through the
picture projector and the mechanism for sound reproduction.
Accordingly, synchronization is accomplished by arranging the two
records on the positive film in such relative positions that the
two records will simultaneously reach the two mechanisms for
reproducing them, so that the reproduced sound will accompany the
reproduced scene of the picture as it did when they were
recorded.
The specifications of the patent state broadly that it is of
great advantage to arrange the sound record sequences and the
picture record sequences on a single film. They then describe the
technical difficulties in developing the negative when the sound
and picture records are photographed on a single film. They point
out that the picture record is made under changing light
conditions, which may result in over or under exposures, which will
require correction and a treatment in the development of the
negative different from that suitable to the sound sequence, which
is recorded under different light conditions. It is said that it is
practically impossible to secure the variations in treatment
required for developing the two types of record where the two
sequences, picture and sound, are
Page 294 U. S. 469
photographed upon the same film strip. The specifications then
describe the invention as follows:
"According to the present invention, the difficulty is overcome
by either employing entirely separate films for the simultaneous
photographing of the sound and picture negatives, or films which
are connected during the photographing, but which are separated
from one another before the developing, then separately developing
the negatives if and in the manner required to remedy the
difficulties, and then printing both sequences -- picture and sound
-- on the different portions of the same positive film."
Respondent relies on Claims 5 to 9, inclusive, and Claim 11 of
the patent, of which it is agreed Claim 5 is typical. It reads as
follows:
"A process for producing a combined sound and picture positive
film, for talking moving pictures, comprising photographing a
sequence of pictures on one length of film, and simultaneously
photographing on another length of film a corresponding sequence of
sounds accompanying the action, separately developing the two
negatives in a manner appropriate for each, and printing the sound
and picture negatives respectively upon different longitudinally
extending portions of the same sensitized film, to form the sound
sequences at one side of and along the picture sequence."
It will be observed that the claimed method or process is for
combining sound and picture records on a single film and comprises
three steps: first, the simultaneous photographing of a picture
record and a record of the accompanying sound, each on a separate
negative; second, the separate development of the two negatives in
a manner appropriate to each; and, third, the printing either
simultaneously or successively, from the two negatives of the sound
record and the picture record side by side on a single positive
film.
Page 294 U. S. 470
It is important to indicate the more significant features of the
sound reproduction procedure and mechanisms which are not embraced
in the claims. The patent does not claim either a method or a
device for recording or for reproducing sound, or a method of
synchronizing the two records, or the use of a single film in the
reproduction of combined sound and picture records, or any method
or device for printing the positive record from the two separate
negatives.
While the claims speak of a process or method for producing a
combined sound and picture positive film, it is obvious that the
process described and claimed has no necessary connection with
sound reproduction. The positive film bearing the combined sound
and picture records is a product of the photographic art. The
method claimed for producing it relates exclusively to that art. It
is neither a method of sound recording or sound reproduction. It
claims only a process every step in which is an application of the
art of photography; simultaneous exposure of the negatives, their
separate development, and printing from them a single positive
film. The process is as applicable to any other form of
photographic record as to a photographic sound record. It is as
effective in the production of the one as the other. Its importance
to the sound picture industry arises only from the fact that the
single film bearing the two records, for which no patent is
claimed, is of great utility in that industry.
An examination of the prior art can leave no doubt that the
method, as thus described and clearly restricted by the patent,
lacks novelty and invention. The only step in respondent's method
for which any advance could be claimed over earlier methods is the
process of uniting two records on a single positive film by
printing them from separate negatives. The Bullis patent, already
mentioned, and the Craig patent, United States No. 1,289,337, of
1918, had shown the simultaneous exposure and separate
development
Page 294 U. S. 471
of sound and picture films, the advantages of which, as well as
the advantages of the double record on a single film, were well
known. The claim to invention is thus narrowed to the single
contention that the patentees secured the benefit of these well
known advantages by resort to the added step of uniting the two
separate photographic records, sound and picture, by printing them
on a single film.
The practice of printing separate photographs from separately
developed negatives upon a single positive film has long been known
to photographers. Standard photographic dictionaries, published
here and abroad between 1894 and 1912, describe the procedure for
"combination printing" of a single positive picture from separately
developed negatives.
* The procedure is
shown to have been followed in the laboratories of the Eastman
Kodak Company for many years prior to April, 1921, the date claimed
for the present patent, and before that date the company had made
special materials for use in combination printing.
The practice was also well known in the motion picture industry.
In 1908, the American Mutoscope & Biograph Company made and
released in the United States a motion picture, The Music Master.
This picture was prepared by separately photographing two scenes.
From the separately developed negatives, a positive was printed
showing the two pictures on the same strip of film, from
Page 294 U. S. 472
which the motion picture was reproduced. The British Downing
patent, No. 6,727, of 1913, discloses methods and apparatus for
producing motion pictures, accompanied by printed words used by the
actors, the two records being printed on a single positive film
from separately exposed and developed negatives. The Messter
patent, United States No. 1,286,383, of 1918, and the British
patent, No. 21,467, issued to Rossi in 1909, each discloses a
method of printing two separately exposed picture records on a
single film. The Craig patent, already mentioned, calls for
separate exposure and development of sound and picture negatives,
simultaneously recorded, and their printing on opposite sides of a
single film. The Greensfelder patent, United States No. 1,254,684,
of 1918, discloses a method for printing, from separately exposed
and developed negatives, a sound record and a picture record on the
same side of a single positive film. The function of the sound
record differed radically from that contemplated by respondent's
patent, but this is immaterial so far as its printing is concerned,
in which the Greensfelder patent does not substantially differ from
that in suit. While these patents did not specifically mention the
separate development of the negatives of the two records, it
appears that they were photographed separately upon separate
negatives, and the record shows that at their dates the state of
the art was such as to require separate development of the two
negatives. The practice and advantage of separate development are
also shown to be well known. This and other evidence in the record
abundantly supports the finding of the trial court that, as early
as 1908, it was common practice in the motion picture industry to
print, on standard positive film, composite pictures from
separately developed negatives.
The simultaneous photographing of sound and picture records was
not novel -- separate development of the negatives was well known,
the advantage of uniting the two records, sound and picture, on a
single film, was well
Page 294 U. S. 473
known, and the method of uniting two photographic picture
records by printing them from the separate negatives was well
known.
This use of an old method to produce an old result was not
invention.
See Electric Cable Joint Co. v. Edison Co.,
292 U. S. 69,
292 U. S. 80, and
cases cited. Even if it be assumed that the Greensfelder patent did
not anticipate that of respondent, because the sound record there
mentioned was designed directly to operate musical instruments,
rather than a loudspeaker, all that was novel in the claimed method
was its application in the production of a combined sound and
picture record, instead of a combination of two picture records. To
claim the merit of invention, the patented process must itself
possess novelty. The application of an old process to a new and
closely analogous subject matter, plainly indicated by the prior
art as an appropriate subject of the process, is not invention.
Brown v. Piper, 91 U. S. 37,
91 U. S. 41;
see Pennsylvania R. Co. v. Locomotive Truck Co.,
110 U. S. 490,
110 U. S. 494;
Dreyfus v. Searle, 124 U. S. 60,
124 U. S. 64;
Concrete Appliances Co. v. Gomery, 269 U.
S. 177,
269 U. S.
184-185. However wide the differences between the
procedures and results of sound reproduction from film, on the one
hand, and picture reproduction, on the other, the method of
producing photographic sound and picture records and uniting them
on the positive film are identical, for both sound and picture
records, from the time of exposure of the negatives until the
single film is completed. With knowledge of the well understood
advantages of the union of the two records on a single film, it
required no more than the expected skill of the art of photography
to use an old method of printing photographically the two negatives
upon a single positive.
Against this conclusion, respondents throw the weight of
voluminous evidence showing the practical utility and widespread
use of the patented process, which prevailed with the court below
as sufficient to establish invention.
Page 294 U. S. 474
It is said that, however simple and obvious the method may
appear to be now that it is in successful use, no one before the
patentees had used it for producing the union of a sound and a
picture record. Respondents also allege that the positive film
produced by its method is more useful than any it had been possible
to produce by other methods, and that it has found all but
universal acceptance. These considerations, it is urged, should
turn the scale in favor of invention.
Laying aside the objection that it is only when invention is in
doubt that advance in the art may be thrown in the scale,
DeForest Radio Co. v. General Electric Co., 283 U.
S. 664,
283 U. S. 685;
Smith v. Goodyear Dental Vulcanite Co., 93 U. S.
486,
93 U. S.
495-496, we think the evidence of utility and prompt
acceptance of the patented method, in the circumstances of this
case, adds little weight to the claim of invention. The greater
utility of respondent's film over those effecting the union of the
two records by other methods does not establish the novelty of the
method. Evidence of great utility of a method or device, it is
true, may in some circumstances be accepted as evidence of
invention. Where the method or device satisfies an old and
recognized want, invention is to be inferred, rather than the
exercise of mechanical skill. For mere skill of the art would
normally have been called into action by the generally known want.
See Webster Loom Co. v. Higgins, 105 U.
S. 580,
105 U. S. 591;
Krementz v. S. Cottle Co., 148 U.
S. 556,
148 U. S. 560;
Hobbs v. Beach, 180 U. S. 383,
180 U. S. 392;
Carnegie Steel Co. v. Cambria Iron Co., 185 U.
S. 403,
185 U. S.
429-430;
Expanded Metal Co. v. Bradford,
214 U. S. 366,
214 U. S.
381.
But the state of the motion picture art, as it is disclosed by
the present record, indicates that there was no generally
recognized demand for any type of film record, for the reproduction
of sound to accompany motion pictures, until after the present
patent was applied for.
See Hollister v. Benedict & Burnham
Mfg. Co., 113 U. S. 59,
113 U. S. 73.
Page 294 U. S. 475
Compare McClain v. Ortmayer, 141 U.
S. 419,
141 U. S. 428;
Grant v. Walker, 148 U. S. 547,
148 U. S. 556.
Before 1926, motion pictures were silent, and there was no
convincing evidence that the public would prefer the sound picture.
In that year, Warner Bros. exhibited sound pictures produced by the
disc system, provided by the Western Electric Company. At that
time, the company had for some years been experimenting with both
film and disc systems for recording sound, and it had electrically
recorded disc phonographic records which were in commercial use.
The addition of sound on disc to motion pictures involved merely
the attachment of the phonographic type of turntable to the
ordinary motion picture projector, without any extensive
modification of the projector or the film printing machines then in
use, as was later necessary in order to employ the film method.
Moreover, as has already been indicated, skillfully devised
mechanisms were required for successfully recording and reproducing
sound by the film method, a problem distinct from any method of
uniting the sound and picture records upon a single film.
Until these appliances were perfected, there could be no
pressing and generally recognized demand for the sound film. It was
not until after the public interest in sound pictures was
disclosed, in the summer of 1926, that the mechanism for recording
and reproducing sound by the film method was carried to a state of
perfection which would warrant its production in commercial form.
The light valve was produced in commercial form in December, 1926,
and the first installations were in 1927. A rival system, of the
Fox case Company, for recording and reproducing sound by film, was
not brought to completion until after 1926. Other problems engaging
the attention of experimenters in this field were the necessary
improvement of the photoelectric cell, the devising of suitable
emulsion for sound negatives, of apparatus for
Page 294 U. S. 476
"mixing" the sound to be recorded, and the mechanical perfection
of the apparatus for reproducing sound from film.
See Altoona
Publix Theaters, Inc. v. American Tri-Ergon Corp., post, p.
294 U. S. 477.
Thus, there is no basis shown by this record for the contention
that advance in this phase of the motion picture industry was
awaiting the development of the combined sound and picture record
upon a single positive film. On the contrary, the inference seems
plain that the advance awaited the public acceptance of the sound
motion picture; that, when the public demand became manifest, it
was still necessary to develop suitable mechanisms, not embraced in
the patent, for the reproduction of sound from film. There had long
been, ready at hand, knowledge in the photographic art which would
enable one skilled in the art to produce the film suitable for use
in the new apparatus. Indeed, at some time before 1924, Wente,
engaged in research on sound film apparatus for the Western
Electric Company, without any knowledge of the work of the
patentees of the present patent, had prepared the combined sound
and picture positive film by printing it from separate negatives,
separately exposed and developed.
The bare fact that several inventors, in the early stages of
sound reproduction, working independently, of whose knowledge and
skill in the photographic art we know little or nothing, failed to
resort to a method, well known to that art, for printing a
combination film for which there was then no generally recognized
need, does not give rise to the inference of invention.
The court below also rested its decision on the ground that the
petitioner is estopped to deny the validity of the patent by the
application of Wente, April 8, 1924, who was in the employ of the
Western Electric Company, for a patent for an improvement in
recording and printing the sound record film, which contained
claims broad enough
Page 294 U. S. 477
to include the method claimed by respondent. These claims were
rejected by the Patent Office as reading on the British patent
178,442 of the present patentees, and the Greensfelder patent,
already mentioned. However inconsistent this early attempt to
procure a patent may be with petitioner's present contention of its
invalidity for want of invention, this Court has long recognized
that such inconsistency affords no basis for an estoppel, nor
precludes the court from relieving the alleged infringer and the
public from the asserted monopoly when there is no invention.
Haughey v. Lee, 151 U. S. 282,
151 U. S. 285.
Reversed.
MR. JUSTICE BRANDEIS took no part in the consideration or
decision of this case.
* Wilson's Cyclopaedic Photography, published by Edward L.
Wilson, New York, 1894; Encyclopaedic Dictionary of Photography, by
Woodbury, published by Scoville & Adams Co., New York, 1896;
Konig, published by Dawbarn & Ward, Limited, London, 1906;
Cassell's Cyclopaedia of Photography, by Jones, published by
Cassell & Company, Limited, 1912. (The references, with quoted
portions of the texts, were made a part of the record by
stipulation.) The publication last mentioned states that
"combination printing had its origin in 1855, when Berwick and
Annan, of Glasgow, exhibited a picture printed from two different
negatives -- a figure and a landscape;"
numerous later examples of the practice are given.