1. Where a patent application fully and adequately disclosed,
but did not claim, the thing patented to a later applicant alleging
a later date of invention, the later applicant was not the "first
inventor" within Rev.Stats. § 4920. P.
270 U. S.
399.
2. As regards "reduction to practice," a description that would
bar a patent if printed in a periodical or in an issued patent is
equally effective in an application. P.
270 U.S. 401.
1 F.2d 227 reversed.
Certiorari to a decree of the circuit court of appeals which
affirmed a decree of the district court (297 F. 846) enjoining an
alleged infringement of plaintiff's patent.
Page 270 U. S. 399
MR. JUSTICE HOLMES delivered the opinion of the Court.
This is a suit for the infringement of the plaintiff's patent
for an improvement in welding and cutting apparatus alleged to have
been the invention of one Whitford. The suit embraced other matters
but this is the only one material here. The defence is that
Whitford was not the first inventor of the thing patented, and the
answer gives notice that, to prove the invalidity of the patent,
evidence will be offered that one Clifford invented the thing, his
patent being referred to and identified. The application for the
plaintiff's patent was filed on March 4, 1911, and the patent was
issued on June 4, 1912. There was no evidence carrying Whitford's
invention further back. Clifford's application was filed on January
31, 1911, before Whitford's, and his patent was issued on February
6, 1912. It is not disputed that this application gave a complete
and adequate description of the thing patented to Whitford, but it
did not claim it. The district court gave the plaintiff a decree,
holding that, while Clifford might have added this claim to his
application, yet as he did not, he was not a prior inventor. 297 F.
846. The decree was affirmed by the circuit court of appeals. 1
F.2d 227. There is a conflict between this decision and those of
other Circuit Courts of Appeal, especially the Sixth.
Lemley v.
Dobson-Evans Co., 243 F. 391.
Naceskid Service Chain Co.
v. Perdue, 1 F.2d 924. Therefore a writ of certiorari was
granted by this Court. 266 U.S. 596.
The patent law authorizes a person who has invented an
improvement like the present, "not known or used by others in this
country, before his invention," etc., to obtain a patent for it.
Rev.Sts. § 4886, amended by Act March 3, 1897, c. 391, § 1, 29
Stat. 692. Among the defences to a suit for infringement the fourth
specified by the statute is that the patentee "was not the original
and first inventor
Page 270 U. S. 400
or discoverer of any material and substantial part of the thing
patented." Rev.Sts. § 4920, March 3, 1897, c. 391, § 2, 29 Stat.
692. Taking these words in their natural sense as they would be
read by the common man, obviously one is not the first inventor if,
as was the case here, somebody else has made a complete and
adequate description of the thing claimed before the earliest
moment to which the alleged inventor can carry his invention back.
But the words cannot be taken quite so simply. In view of the gain
to the public that the patent laws mean to secure, we assume for
purposes of decision that it would have been no bar to Whitford's
patent if Clifford had written out his prior description and kept
it in his portfolio uncommunicated to anyone. More than that, since
the decision in the case of the
Cornplanter
Patent, 23 Wall. 181, it is said at all events for
many years, the Patent Office has made no search among abandoned
patent applications, and by the words of the statute, a previous
foreign invention does not invalidate a patent granted here if it
has not been patented or described in a printed publication.
Rev.Sts. § 4923.
See Westinghouse Machine Co. v. General
Electric Co., 207 F. 75. These analogies prevailed in the
minds of the courts below.
On the other hand, publication in a periodical is a bar. This as
it seems to us is more than an arbitrary enactment, and
illustrates, as does the rule concerning previous public use, the
principle that, subject to the exceptions mentioned, one really
must be the first inventor in order to be entitled to a patent.
Coffin v.
Ogden, 18 Wall. 120. We understand the circuit
court of appeals to admit that, if Whitford had not applied for his
patent until after the issue to Clifford, the disclosure by the
latter would have had the same effect as the publication of the
same words in a periodical, although not made the basis of a claim.
1 F.2d 233. The invention is made public property
Page 270 U. S. 401
as much in the one case as in the other. But if this be true, as
we think that it is, it seems to us that a sound distinction cannot
be taken between that case and a patent applied for before but not
granted until after a second patent is sought. The delays of the
patent office ought not to cut down the effect of what has been
done. The description shows that Whitford was not the first
inventor. Clifford had done all that he could do to make his
description public. He had taken steps that would make it public as
soon as the Patent Office did its work, although, of course,
amendments might be required of him before the end could be
reached. We see no reason in the words or policy of the law for
allowing Whitford to profit by the delay and make himself out to be
the first inventor when he was not so in fact when Clifford had
shown knowledge inconsistent with the allowance of Whitford's
claim,
[Webster] Loom Co. v. Higgins, 105 U.
S. 580, and when otherwise the publication of his patent
would abandon the thing described to the public unless it already
was old,
McClain v. Ortmayer, 141 U.
S. 419,
141 U. S. 424.
Underwood v. Gerber, 149 U. S. 224,
149 U. S.
230.
The question is not whether Clifford showed himself by the
description to be the first inventor. By putting it in that form,
it is comparatively easy to take the next step and say that he is
not an inventor in the sense of the statute unless he makes a
claim. The question is whether Clifford's disclosure made it
impossible for Whitford to claim the invention at a later date. The
disclosure would have had the same effect as at present if Clifford
had added to his description a statement that he did not claim the
thing described because he abandoned it or because he believed it
to be old. It is not necessary to show who did invent the thing in
order to show that Whitford did not.
It is said that, without a claim, the thing described is not
reduced to practice. But this seems to us to rest on
Page 270 U. S. 402
a false theory helped out by the fiction that, by a claim, it is
reduced to practice. A new application and a claim may be based on
the original description within two years, and the original
priority established notwithstanding intervening claims.
Chapman v. Wintroath, 252 U. S. 126,
252 U. S. 137.
A description that would bar a patent if printed in a periodical or
in an issued patent is equally effective in an application so far
as reduction to practice goes.
As to the analogies relied upon below, the disregard of
abandoned patent applications however explained cannot be taken to
establish a principle beyond the rule as actually applied. As an
empirical rule, it no doubt is convenient, if not necessary, to the
Patent Office, and we are not disposed to disturb it, although we
infer that originally the practice of the Office was different. The
policy of the statute as to foreign inventions obviously stands on
its own footing, and cannot be applied to domestic affairs. The
fundamental, rule we repeat, is that the patentee must be the first
inventor. The qualifications in aid of a wish to encourage
improvements or to avoid laborious investigations do not prevent
the rule from applying here.
Decree reversed.