Quantificare S.a. v. Canfield Scientific, Inc.

N OTE : This disposition is nonprecedential.
United States Court of Appeals
for the Federal Circuit
______________________
QUANTIFICARE S.A.,
Appellant
v.
CANFIELD SCIENTIFIC, INC.,
Appellee
______________________
2023-1917, 2023-1918, 2023-1919
______________________
Appeals from the United States Patent and Trademark
Office, Patent Trial and Appeal Board in Nos. IPR2021-
01511, IPR2021-01518, IPR2021-01519.
______________________
Decided: March 25, 2025
______________________
MARK D. GIARRATANA , McCarter & English, LLP, Hart-
ford, CT, argued for appellant. Also represented by KEVIN
R EINER .
THOMAS LEE DUSTON, Marshall, Gerstein & Borun
LLP, Chicago, IL, argued for appellee. Also represented by
I SHA S. SHAH , MICHAEL R. WEINER .
______________________
Before L OURIE , MAYER , and P ROST, Circuit Judges.
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 2
P ER C URIAM .
QuantifiCare S.A. (“QuantifiCare”) appeals final writ-
ten decisions of the United States Patent and Trademark
Office Patent Trial and Appeal Board (“board”) which con-
cluded that all challenged claims of its stereophotogram-
metry patents were unpatentable as obvious. See Canfield
Sci., Inc. v. QuantifiCare S.A., No. IPR2021-01519
(P.T.A.B. Mar. 17, 2023), J.A. 167–238; Canfield Sci., Inc.
v. QuantifiCare S.A., No. IPR2021-01518 (P.T.A.B. Mar. 9,
2023), J.A. 104–66; Canfield Sci., Inc. v. QuantifiCare S.A.,
No. IPR2021-01511 (P.T.A.B. Mar. 9, 2023), J.A. 34–103.
For the reasons discussed below, we affirm.
I. BACKGROUND
QuantifiCare owns three patents—U.S. Patent Nos.
10,070,119 (the “’119 patent”), 10,165,253 (the “’253 pa-
tent”), and 10,681,334 (the “’334 patent”)—which are di-
rected to a “preferably portable stereophotogrammetry
device equipped with a system to position the subject at, at
least, two pre-defined distances for picture taking.”
’119 patent, col. 4 ll. 7–9.1 The claimed device and method
can be used “for reconstructing in 3-Dimensions compre-
hensive representations of the head and torso of [a] sub-
ject.” Id. Abstract. The specification explains that
“[s]tereophotogrammetry consists in gathering the images
of a subject from at least two view[s] with a calibrated cam-
era whose optics are perfectly modeled.” Id. col. 1 ll. 24–
26.
In March 2022, the board instituted inter partes review
of: (1) claims 1–4 and 8–11 of the ’119 patent; (2) claims 1–
4, 8–12, 15, 16, and 20–23 of the ’253 patent; and (3) claims
1 The ’119, ’253, and ’334 patents (collectively, “the
QuantifiCare patents”) share substantially identical speci-
fications. For ease of reference, we cite only to the specifi-
cation of the ’119 patent unless otherwise noted.
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 3
1–5, 9–12, 15, 16, and 20–23 of the ’334 patent. See J.A.
35, 105, 168. The board subsequently issued final written
decisions concluding that Canfield Scientific, Inc. (“Can-
field”) had shown, by a preponderance of the evidence, that
the challenged claims were unpatentable. J.A. 101, 165,
236. The board treated claim 1 of each of the QuantifiCare
patents as illustrative of the subject matter claimed in that
patent. J.A. 38, 109, 171. Claim 1 of the ’119 patent re-
cites:
1. A device for stereophotogrammetry comprising
a camera body (1) and a double-optics (2) compris-
ing two sub-optics (2b) and (2c), configured for a
simultaneous acquisition of two views ac-
cording to two different angles, wherein the de-
vice is comprising a positioning system (34)
configured to define a position of a target subject
(S) for one of at least two distinct pre-defined point
positions (A3, A4) of the target subject (S) relative
to the stereophotogrammetry device, the at least
two distinct predefined point positions comprising
a closer point position (A4) and a farther point po-
sition (A3), the closer point position (A4) being
closer to the stereophotogrammetry device than the
farther point position (A3), and wherein the posi-
tioning system (34) is comprising at least two pairs
of light beamers (3b, 3c) and (4b, 4c) where a first
pair of light beamers (3b, 3c) is converging to the
farther point position (A3) and a second pair of
light beamers (4b, 4c) is converging to the closer
point position (A4), and wherein the device com-
prises a switch (5) comprising a first selection posi-
tion configured to select the farther point position
(A3) and a second selection position configured to
select the closer point position (A4), wherein the
switch (5) is configured to switch on the first pair
of light beamers (3b, 3c) in the first selection posi-
tion and wherein the switch (5) is configured to
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 4
switch on the second pair of light beamers (4b, 4c)
in the second selection position.
’119 patent, col. 11 ll. 32–57 (disputed claim language in
bold).
Claim 1 of the ’253 patent recites:
1. A device for stereophotogrammetry comprising
a camera body (1) and a double-optics (2) compris-
ing two sub-optics (2b) and (2c), configured for a
simultaneous acquisition of two views ac-
cording to two different angles, wherein the de-
vice is comprising a positioning system (34)
configured to signal when a target subject (S) is
reaching a pre-defined distance position to the
camera (1) corresponding to one of at least two dis-
tinct pre-defined distance positions (A3, A4) of the
target subject (S) relative to the camera body (1) of
the stereophotogrammetry device, the at least two
distinct predefined distance positions comprising a
closer distance position (A4) and a farther distance
position (A3), the closer distance position (A4) be-
ing closer to the camera body (1) of the stereopho-
togrammetry device than the farther distance
position (A3) to the camera body (1) of the stereo-
photogrammetry device.
’253 patent, col. 11 ll. 42–57 (disputed claim language in
bold).
Claim 1 of the ’334 patent recites:
1. A device for stereophotogrammetry config-
ured for an acquisition of two views accord-
ing to two different angles, said acquisition
generating a pair of images, with one image corre-
sponding to one of the two views and the other im-
age corresponding to the other of the two views,
this pair of images being referred to as a stereo-
pair, wherein the device is further comprising a
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 5
positioning system (34) configured to signal when a
target subject (S) is reaching one of at least two dis-
tinct pre-defined distance positions (A3, A4) rela-
tive to the stereophotogrammetry device, the at
least two distinct predefined distance positions
comprising a closer distance position (A4) and a
farther distance position (A3), the closer distance
position (A4) corresponding to the target subject (S)
being closer to the stereophotogrammetry device
and the farther distance position (A3) correspond-
ing to the target subject (S) being farther [from] the
stereophotogrammetry device.
’334 patent, col. 11 l. 54–col. 12 l. 3 (disputed claim lan-
guage in bold).
In each final written decision, the board construed the
limitation requiring a stereophotogrammetry device con-
figured for the “acquisition of two views according to two
different angles.” J.A. 45–56, 112–24, 175–89. The board
rejected QuantifiCare’s argument that this limitation re-
quires that the optical axis of each sub-optic in the device
be angled differently, therefore excluding configurations
where the sub-optics’ optical axes are oriented in parallel.
J.A. 55–56, 123–24, 189. Instead, according to the board,
the limitation only requires that the sub-optics each view a
subject from a different angle. J.A. 55–56, 123–24, 189.
Applying this construction, the board determined that all
claim limitations in the challenged claims were disclosed
in the cited prior art.2
2 The board determined that many of the limitations
of the challenged claims were disclosed in WO 2010/097572
A2 (“Plassmann”), J.A. 1479–506, a World Intellectual
Property Organization publication that describes stereo-
scopic imaging. See J.A. 80–85, 140–45, 196–200.
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 6
This appeal followed. We have jurisdiction under 28
U.S.C. § 1295(a)(4)(A) and 35 U.S.C. §§ 141(c), 319.
II. DISCUSSION
A. Standard of Review
We review the board’s legal conclusions de novo and its
factual findings for substantial evidence. Kamstrup A/S v.
Axioma Metering UAB, 43 F.4th 1374, 1381 (Fed. Cir.
2022); HTC Corp. v. Cellular Commc’ns Equip., LLC, 877
F.3d 1361, 1369 (Fed. Cir. 2017). Obviousness is a question
of law based on underlying factual determinations. See
KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398, 427 (2007);
Quanergy Sys., Inc. v. Velodyne Lidar USA, Inc., 24 F.4th
1406, 1414 (Fed. Cir. 2022).
B. Claim Construction
The central dispute on appeal is the meaning of claim
language requiring a device for stereophotogrammetry
with double optics having two sub-optics “configured for a
simultaneous acquisition of two views according to two dif-
ferent angles.” ’119 patent, col. 11 ll. 34–35; ’253 patent,
col. 11 ll. 44–45.3 QuantifiCare asserts that this “different
3 In both the ’119 and ’253 patents, claim 1 recites a
stereophotogrammetry device having two sub-optics “con-
figured for a simultaneous acquisition of two views accord-
ing to two different angles.” ’119 patent, col. 11 ll. 34–35;
’253 patent, col. 11 ll. 44–45. By contrast, claim 1 of the
’334 patent recites “[a] device for stereophotogrammetry
configured for an acquisition of two views according to two
different angles.” ’334 patent, col. 11 ll. 54–55. Given that
QuantifiCare does not dispute that the “according to two
different angles” requirement in claim 1 of each of its three
patents should be afforded the same construction, the fact
that claim 1 of the ’334 patent does not even refer to sub-
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 7
angles” requirement relates to the optical axes of the sub-
optics. Specifically, it contends that the optical axes of the
sub-optics must be at two different angles, meaning that
configurations in which the optical axes of the sub-optics
are oriented in parallel are excluded from the scope of the
claims.
We find this argument unpersuasive for several rea-
sons. First, the claim language is most reasonably read to
mean that the “according to two different angles” require-
ment relates to the views acquired by the claimed sub-op-
tics rather than the orientations of those sub-optics.
“While certain terms may be at the center of the claim con-
struction debate, the context of the surrounding words of
the claim also must be considered in determining the ordi-
nary and customary meaning of those terms.” Brookhill–
Wilk 1, LLC v. Intuitive Surgical, Inc., 326 F.3d 1215, 1220
(Fed. Cir. 2003). Because the disputed claim limitation,
“according to two different angles,” immediately follows the
term “two views,” the board correctly determined that the
limitation relates to the views acquired rather than the ori-
entations of the optical axes of the sub-optics. See J.A. 46,
114, 179–180; see also Trivascular, Inc. v. Samuels, 812
F.3d 1056, 1062 (Fed. Cir. 2016) (explaining that “[c]on-
struing individual words of a claim without considering the
context in which those words appear is simply not ‘reason-
able’”). Rather than hewing to the actual language of the
claims, QuantifiCare improperly seeks to redraft those
claims to require “sub-optics configured according to two
different angles for a simultaneous acquisition of two
views.”
Second, we are not persuaded by QuantifiCare’s argu-
ment that the board erred in determining that the term
optics undermines its argument that the “according to two
different angles” limitation requires that the optical axis of
each sub-optic in the device be angled differently.
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 8
“views” in the challenged claims refers to “viewed subject
material” or views of a “target subject.” See J.A. 46 (ex-
plaining that “[t]he term ‘view’ implicates the subject”); see
also J.A. 180 (explaining that “[t]he claimed ‘views’ refer to
viewed subject material (e.g., a desired target subject or
merely whatever exists at the viewing plane”)). In this re-
gard, the specification explains that the claimed portable
stereophotogrammetry device “is equipped with a double
optics enabling the acquisition of two simultaneous views
with different angles of the subject.” ’119 patent, col. 4 ll.
10–12 (emphasis added). It further states that “[s]tereo-
photogrammetry consists in gathering the images of a sub-
ject from at least two view[s] with a calibrated camera
whose optics are perfectly modeled.” Id. col. 1 ll. 24–26
(emphasis added). We note, moreover, that the phrase “two
views according to two different angles” is followed in each
of the claims with references to positioning a “target sub-
ject” at pre-defined positions relative to the stereophoto-
grammetry device. Id. col. 11 ll. 37, 39; ’253 patent, col. 11
ll. 47, 50; ’334 patent, col. 11 ll. 61, 66. We reject, therefore,
QuantifiCare’s assertion that the board incorrectly deter-
mined that the limitation requiring “two views according
to two different angles” relates to two views of a subject.
See J.A. 45–46, 114–15, 180–81.
Third, we do not agree with QuantifiCare’s assertion
that embodiments in the specification compel the conclu-
sion that the challenged claims are restricted to sub-optics
with inwardly-angled optical axes. Even accepting that the
specification contains figures showing sub-optics that are
angled inwardly, see J.A. 1020–22, it nowhere states that
inwardly-angled sub-optics are an essential feature of the
claimed invention. See, e.g., Hill-Rom Servs., Inc. v.
Stryker Corp., 755 F.3d 1367, 1371 (Fed. Cir. 2014) (“While
we read claims in view of the specification, of which they
are a part, we do not read limitations from the embodi-
ments in the specification into the claims.”). To the con-
trary, it indicates that these figures illustrate “possible” or
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 9
“exemplary” implementations of the claimed invention.
’119 patent, col. 3 ll. 50, 52 (stating that Figures 2 and 3
each illustrate a “possible implementation” of the inven-
tion); id. col. 9 ll. 26–27, 34 (stating that Figures 4 and 5
represent “exemplary device[s]”). Indeed, the specification
explains that “[t]he double optics of the stereophotogram-
metry device can be manufactured in different ways with-
out impacting the functionality of the invention, provided
that it is characterized by an increased depth of field.” Id.
col. 4 ll. 20–23 (emphasis added).
Fourth, the prosecution history supports the conclusion
that the “according to two different angles” limitation does
not exclude sub-optics with parallel optical axes. J.A. 52–
54, 120–22, 186–88. During prosecution of the ’119 patent,
the examiner rejected claims as obvious over U.S. Patent
Pub. No. 2011/0175987 (“Hoffmeier”), J.A. 1462–70, a ref-
erence which states that its “two optical systems 8, 9 can
be coupled to the [camera system] board 3 such that the
respective optical axis of an optical system 8, 9 runs
through the center point of the image sensing area 10, 11
of an image detection sensor 1, 2,” J.A. 1469 (emphases
omitted), and which contains figures which can reasonably
be interpreted to depict optics with parallel optical axes,
see J.A. 1465–66, 3231. In response to this rejection, Quan-
tifiCare acknowledged that Hoffmeier taught claim 1’s
“two different angles” limitation, stating that it discloses
“[a] device for stereophotogrammetry comprising a camera
body (1) and a double-optics (2) comprising two sub-optics
(2b) and (2c), configured for a simultaneous acquisition of
two views according to two different angles.” J.A. 1123
(emphasis omitted). QuantifiCare further stated that “8
and 9 in [Figure] 3 of Hoffmeier exactly correspond to 2b
and 2c [in Figure] 2 of [the ’119 patent].” J.A. 1122 (em-
phasis added); see J.A. 53–54, 121–22, 187–88.
QuantifiCare now argues that Hoffmeier is ambiguous
as to whether the optical axes of its system are parallel or
angled inwards and that the statements it made during
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 10
prosecution regarding Hoffmeier therefore “cannot be
deemed a clear and unmistakable admission” that optics
with parallel optical axes can acquire their views according
to two different angles. Appellant’s Br. 52. As the board
correctly determined, however, QuantifiCare’s statements
during prosecution regarding Hoffmeier’s disclosure “sug-
gest[ed] to the public that [QuantifiCare] understood that
spaced optics with parallel optical axes [could], nonethe-
less, fall within the scope of claim 1.” J.A. 54; see also
J.A. 122, 188. As we have previously recognized, “[t]he
public-notice function of a patent and its prosecution his-
tory requires that we hold patentees to what they declare
during prosecution.” Infinity Comput. Prods., Inc. v. Oki
Data Ams. Inc., 987 F.3d 1053, 1060 (Fed. Cir. 2021); see
also Hockerson–Halberstadt, Inc. v. Avia Grp. Int’l, Inc.,
222 F.3d 951, 957 (Fed. Cir. 2000) (rejecting a patentee’s
“request for a mulligan that would erase from the prosecu-
tion history the inventor’s disavowal of a particular aspect
of a claim term’s meaning”).
Finally, extrinsic evidence in the form of statements
made by QuantifiCare during district court litigation sup-
ports the conclusion that the “two views according to two
different angles” limitation should not be construed to re-
quire that the optical axes of the sub-optics be angled dif-
ferently. QuantifiCare argues on appeal that Plassmann
does not disclose optics configured to acquire “two views ac-
cording to two different angles” because its optics are “par-
allel and thus at the same angle.” Appellant’s Br. 8
(internal quotation marks omitted). During district court
litigation, however, QuantifiCare responded to Canfield’s
invalidity contentions by admitting that Plassmann
teaches the “according to two different angles” limitation.
J.A. 2615. Indeed, QuantifiCare stated that Plassmann
discloses “a double-optics comprising two sub-optics config-
ured for a simultaneous acquisition of two views according
to two different angles.” J.A. 2615. The board thus had
ample support for its determination that statements made
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 11
by QuantifiCare during district court litigation buttress
the conclusion that parallel sub-optics fall within the scope
of the challenged claims. See J.A. 55, 123, 189.
In sum, after carefully evaluating both the intrinsic
and the extrinsic evidence, the board correctly determined
that the “acquisition of two views according to two different
angles” limitation does not require that the optical axis of
each sub-optic be angled differently, but instead only re-
quires that each sub-optic view a subject from a different
angle. J.A. 55–56, 123, 189; see AIA Eng’g Ltd. v. Ma-
gotteaux Int’l S/A, 657 F.3d 1264, 1272 (Fed. Cir. 2011)
(“To ascertain the scope and meaning of a claim, we con-
sider the claim language, the specification, the prosecution
history, and the relevant extrinsic evidence.”). Quantifi-
Care does not meaningfully dispute that Plassmann
teaches the “acquisition of two views according to two dif-
ferent angles” limitation if the board’s construction of that
limitation is affirmed.
C. Objective Indicia
We reject, moreover, QuantifiCare’s argument that the
board erred in evaluating its proffered evidence of commer-
cial success. As the board correctly determined, Quantifi-
Care was not entitled to a presumption of nexus between
the claimed invention and the purported commercial suc-
cess of its LifeViz® Infinity product because it did not
demonstrate that the product was coextensive, or nearly
coextensive, with the challenged claims. J.A. 58–59, 126–
27, 209–10; see Quanergy, 24 F.4th at 1417 (“We presume
a nexus when the patentee shows that the asserted objec-
tive evidence is tied to a specific product and that product
embodies the claimed features, and is coextensive with
them.” (citation and internal quotation marks omitted)).
We conclude, moreover, that the board correctly re-
jected QuantifiCare’s argument that sales of Canfield’s
Vectra® H2 product were relevant to the commercial suc-
cess of the claimed invention. See J.A. 60–62, 128–30, 222–
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QUANTIFICARE S . A. v. CANFIELD SCIENTIFIC, INC. 12
23. In this regard, QuantifiCare failed to establish either
that the Vectra® H2 product infringed the challenged
claims4 or that any increase in sales of the product was due
to features recited in the challenged claims rather than
other possible factors. See J.A. 60–62, 128–30, 222–24; see
also UCB, Inc. v. Actavis Lab’ys UT, Inc., 65 F.4th 679, 695
(Fed. Cir. 2023) (“Simply speaking, there may be many rea-
sons a product is commercially successful; it is only where
the success is due to the claimed invention that commercial
success can show nonobviousness.”). We have considered
QuantifiCare’s remaining arguments but do not find them
persuasive.
III. CONCLUSION
Accordingly, the decisions of the United States Patent
and Trademark Office Patent Trial and Appeal Board are
affirmed.
AFFIRMED
4 No court has determined that the Vectra® H2 in-
fringes the challenged claims, and we see no error in the
board’s determination that QuantifiCare failed to establish
that Canfield did “not contest” that its product infringes.
J.A. 61, 129, 223.
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