Case: 20-2204 Document: 40 Page: 1 Filed: 08/13/2021
NOTE: This disposition is nonprecedential.
United States Court of Appeals
for the Federal Circuit
______________________
CARRUM TECHNOLOGIES, LLC,
Appellant
v.
UNIFIED PATENTS, LLC,
Appellee
______________________
2020-2204
______________________
Appeal from the United States Patent and Trademark
Office, Patent Trial and Appeal Board in No. IPR2019-
00481.
______________________
Decided: August 13, 2021
______________________
JASON C. MURRAY, Bartlit Beck LLP, Denver, CO, ar-
gued for appellant. Also represented by ANDREW BAAK,
JOHN HUGHES; SARAH ELIZABETH SPIRES, Skiermont Derby
LLP, Dallas, TX.
ROSHAN MANSINGHANI, Unified Patents, LLC, Wash-
ington, DC, argued for appellee. Also represented by DAVID
C. SEASTRUNK, JONATHAN RUDOLPH KOMINEK STROUD;
RAGHAV BAJAJ, Haynes and Boone, LLP, Austin, TX;
DEBRA JANECE MCCOMAS, DAVID L. MCCOMBS, DAVID M.
Case: 20-2204 Document: 40 Page: 2 Filed: 08/13/2021
2 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
O'DELL, Dallas, TX; ANGELA OLIVER, Washington, DC;
CLINT S. WILKINS, Plano, TX.
______________________
Before PROST, SCHALL, and O’MALLEY, Circuit Judges.
O’MALLEY, Circuit Judge.
Carrum Technologies, LLC (“Carrum”) appeals from a
final written decision of the Patent Trial and Appeal Board
(“Board”) holding claims 10 and 11 of U.S. Patent No.
7,925,416 (“the ’416 patent”) unpatentable over the prior
art. Unified Pats. Inc. v. Carrum Techs., LLC, No.
IPR2019-00481, 2020 WL 4004893 (P.T.A.B. July 15,
2020). For the reasons explained below, we reverse.
I. BACKGROUND
The ’416 patent is entitled “Automatic Lateral Acceler-
ation Limiting and Non Threat Target Rejection.” ’416 pa-
tent, at [54]. It relates to an adaptive cruise control system
that (1) reduces vehicle speed in a turn according to the ve-
hicle’s position within the turn and (2) ignores objects de-
tected during the turn that are not in the vehicle’s path. 1
Id. at [57]. The specification explains that these two fea-
tures address problems with prior art adaptive cruise con-
trol systems. Id. at col. 1, l. 64–col. 2, l. 47. Specifically,
prior art systems maintain their set speed when the vehicle
is in a turn, causing excessive lateral acceleration—i.e., the
feeling of being jerked to the outside edge of a car as it is
turning—and possible loss of control of the vehicle. See id.
When the vehicle is in a turn, these prior art systems also
1 Basic cruise control systems permit a driver of a
vehicle to maintain the vehicle’s speed until the driver ap-
plies the brakes or turns off the system. ’416 patent, col. 1,
ll. 18–22. Adaptive cruise control systems incorporate ob-
ject sensing technology to detect other vehicles and to ad-
just vehicle speed accordingly. Id. at col. 1, ll. 23–33.
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 3
respond to objects—e.g., a traffic light, stopped vehicle, or
person—outside of the vehicle’s path, causing unnecessary
braking or speed reduction. Id.
The specification describes a relationship between lat-
eral acceleration, a vehicle’s speed, and the vehicle’s posi-
tion in a turn. The specification also breaks the curve of a
turn into three sections: the entry, middle, and exit sec-
tions. Id. at col. 5, ll. 33–40. In the entry section, a vehi-
cle’s lateral acceleration begins at zero Gs and increases at
a steady rate. 2 Id. at col. 5, ll. 47–49. In the middle section,
the lateral acceleration increases less over time and
reaches its maximum. Id. at col. 5, ll. 49–53. And in the
exit section, the lateral acceleration becomes constant be-
fore decreasing back to zero as the vehicle completes the
turn. Id. at col. 5, ll. 53–55.
Based on these known characteristics, the microproces-
sor-based controller of the ’416 patent’s adaptive cruise
control system can predict not only whether a vehicle is in
a turn but also “the position in which [the vehicle] is located
in the turn, e.g., in the entry of a turn, in the middle of a
turn, or in the exit of a turn.” Id. at col. 5, ll. 41–45; see
also id. at col. 5, ll. 56–67; id. at col. 6, ll. 16–24. Once the
controller determines (a) that the vehicle is in a turn and
(b) where in the turn the vehicle is positioned, it instructs
the braking system of the vehicle to reduce preemptively
the vehicle’s speed. Id. at col. 6, ll. 24–27. Preemptively
doing so reduces the vehicle’s lateral acceleration to a pre-
determined maximum limit according to the vehicle’s posi-
tion in the turn. Id. at col. 6, ll. 27–29.
To ignore detected objects outside a vehicle’s path, the
’416 patent’s system uses the vehicle’s lateral acceleration,
2 A vehicle experiences a lateral acceleration of zero
Gs when it travels, for example, in its lane on a straight
highway.
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4 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
speed, and other data to estimate a path in the vehicle’s
turn. Id. at col. 6, ll. 44–47. The system then marks the
path’s boundaries and does not brake or reduce speed when
a detected object is outside the path’s boundaries. See id.
at col. 6, ll. 47–61.
There are two claims at issue on appeal. Independent
claim 10 of the ’416 patent recites:
A system for use in controlling a vehicle at a vehicle
speed, said system including:
an adaptive cruise control system;
a controller in communication with said adaptive
cruise control system and capable of determin-
ing when the vehicle is in a turn, said control-
ler operative to reduce the vehicle speed
according to a vehicle position in the turn;
at least one lateral acceleration sensor for generat-
ing a signal corresponding to a vehicle lateral ac-
celeration, said lateral acceleration sensor in
electrical communication with said controller and
operative to detect a change in the vehicle lateral
acceleration;
at least one object detection sensor for detecting an
object in a vehicle path of the vehicle during the
turn, said object detection sensor in electrical com-
munication with said controller, wherein said con-
troller includes control logic operative to determine
whether the object is in the vehicle path during the
turn and ignoring the object for braking purposes
when the object is not determined to be in the vehi-
cle path.
Id. at col. 8, l. 63–col. 9, l. 15 (emphases added). Claim 11
depends from claim 10 and recites additional limitations
not at issue on appeal. As the parties do, we refer to the
controller’s claimed capability to determine when the
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 5
vehicle is in a turn and its claimed operativity to reduce the
vehicle speed according to a vehicle position in the turn,
emphasized above, as the controller limitation.
Independent claim 1 is not at issue on appeal, but the
parties rely on it in their arguments on appeal. It recites
“[a] method of controlling a vehicle having an adaptive
cruise control system” comprising “determining when the
vehicle is in a turn,” “determining a vehicle path during the
turn,” “detecting an object,” “determining whether the ob-
ject is in the vehicle path during the turn,” and reducing
vehicle speed only if the object is in the vehicle path. See
id. at col. 8, ll. 7–19.
Only one prior art reference is relevant to this appeal:
U.S. Patent No. 5,508,929 (“Harada”). Harada describes a
vehicle control apparatus that controls a vehicle’s running
conditions so that the vehicle reaches the position intended
by its driver. J.A. 546 (col. 1, ll. 59–62). Specifically,
Harada’s electronic control unit (“ECU”) determines the ve-
hicle’s intended position based on either the angle of the
vehicle’s steering wheel or front wheels. Id. (col. 2,
ll. 16–26, 55–58). Harada’s ECU also determines the posi-
tion that the vehicle is estimated to reach based on the run-
ning state of the vehicle. Id. (col 2, ll. 26–31). If there is a
difference between the intended and estimated positions—
e.g., the vehicle is slipping in the lateral direction because
of an external disturbance like a sudden side wind or an
abrupt change of the friction coefficient of the road—
Harada’s ECU controls a rear-wheel steering actuator or a
vehicle-speed changing actuator to reduce the difference to
zero. J.A. 546, 548 (col. 2, ll. 44–53; col. 5, ll. 53–58). In
this way, Harada enables a driver to more accurately run
the vehicle as intended. J.A. 546 (col. 2, ll. 41–44).
According to Harada, its ECU responds in one of three
ways based on (a) the magnitude of the difference between
the intended lateral displacement, y1, and the estimated
lateral displacement, y2, and (b) the signs of the lateral
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6 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
displacements. If the difference is less than a predeter-
mined reference value, like the width of a traffic lane, the
ECU takes no action. J.A. 549–50 (col. 8, l. 58–col. 9, l. 2).
This is because a driver may find vehicle condition control
in these scenarios to be excessive. J.A. 547 (col. 3, ll. 8–11).
If the difference is larger than the reference value and the
signs of the lateral displacements are the same, the ECU
controls the rear wheels of the vehicle. J.A. 550 (col. 9,
ll. 3–29). Only if the difference is larger than the reference
value and the signs of the lateral displacements are differ-
ent from each other does Harada’s ECU lower vehicle
speed. Id. (col. 9, ll. 41–51). Harada’s ECU lowers vehicle
speed in these scenarios to improve driving safety because
it estimates the running state of the vehicle to be unstable.
Id. An example scenario includes when “the vehicle is run-
ning in a direction opposite to a direction in which the
steering wheel is operated or rotated by the driver, for ex-
ample, on a snowy or icy road surface.” J.A. 551 (col. 11,
ll. 42–48).
Unified Patents, LLC (“Unified”) petitioned for inter
partes review of the ’416 patent, and the Board instituted
review. In its final written decision, the Board first re-
jected Carrum’s proposed construction that the controller
limitation requires a controller that detects when a vehicle
is in a turn. Unified, 2020 WL 4004893, at *5. The Board
explained that Carrum’s argument conflated “determin-
ing” when a vehicle is in a turn, as claimed, with “detect-
ing” when the vehicle is in a turn. Id. The Board held that
“determining” was broader than “detecting.” See id.
The Board then held that claims 10 and 11 were obvi-
ous over the combination of Harada and two other prior art
references. Id. at *28. The Board relied on Harada to dis-
close the controller limitation. Id. at *13–17. The Board
rejected Carrum’s argument that Harada does not disclose
determining a vehicle position in a turn or reducing vehicle
speed on that basis. Id. at *14–16. The Board explained
that Carrum misrepresented the controller limitation,
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 7
which does not require determining a vehicle position in a
turn. Id. at *16. The Board further explained that
Harada’s system detects when a vehicle is in a turn and
that Harada discloses reducing vehicle speed. Id. The
Board finally found that Harada suggests only a preferred
alternative but does not criticize, discredit, or otherwise
discourage reducing vehicle speed according to a vehicle po-
sition in the turn. Id. at *17.
Carrum timely appealed to this court. We have juris-
diction pursuant to 28 U.S.C. § 1295(a)(4)(A).
II. DISCUSSION
We review the Board’s legal conclusions de novo and its
factual findings for substantial evidence. Arendi S.A.R.L.
v. Apple Inc., 832 F.3d 1355, 1360 (Fed. Cir. 2016). Sub-
stantial evidence is such relevant evidence as a reasonable
mind might accept as adequate to support a conclusion. Id.
Claim construction is a question of law with underlying
questions of fact. Wasica Fin. GmbH v. Cont’l Auto. Sys.,
Inc., 853 F.3d 1272, 1278 (Fed. Cir. 2017). Where the in-
trinsic record fully governs the proper construction of a
term, we review the Board’s claim construction de novo. Id.
Obviousness is a question of law based on underlying
factual findings. Donner Tech., LLC v. Pro Stage Gear,
LLC, 979 F.3d 1353, 1359 (Fed. Cir. 2020). These factual
inquiries include the scope and content of the prior art, the
differences between the prior art and the claims at issue,
and the level of ordinary skill in the pertinent art. Id.
On appeal, Carrum argues that the Board disregarded
the claim element of reducing vehicle speed “according to a
vehicle position in the turn.” Relatedly, Carrum contends
that substantial evidence does not support the Board’s
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8 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
obviousness findings because Harada does not disclose this
claim element. We agree on both points. 3
A. “A Vehicle Position in the Turn”
The controller limitation of claim 10 of the ’416 patent
requires the controller be “operative to reduce the vehicle
speed according to a vehicle position in the turn.” ’416 pa-
tent, col. 9, ll. 1–2. The intrinsic evidence makes clear that
the plain and ordinary meaning of “a vehicle position in the
turn” is the position of the vehicle along the curve of the
turn (and not the position of a vehicle that is turning).
For petitions filed on or after November 13, 2018, like
Unified’s here, the Board applies the claim construction
standard articulated in Phillips v. AWH Corp., 415 F.3d
1303 (Fed. Cir. 2005) (en banc). See Changes to the Claim
Construction Standard for Interpreting Claims in Trial
Proceedings Before the Patent Trial and Appeal Board,
83 Fed. Reg. 51,340, 51,340–41 (Oct. 11, 2018). Under the
Phillips standard, claim terms are generally given their or-
dinary and customary meaning as understood by a skilled
artisan when read in the context of the specification and
prosecution history. See Phillips, 415 F.3d at 1313–14.
The specification is consistent in its disclosure of an
adaptive cruise control system that reduces a vehicle’s
speed in a turn based on where the vehicle is along the
curve of the turn. The abstract states that the claimed sys-
tem and method enable a vehicle with an adaptive cruise
control “to reduce its speed in a turn according to the
3 Because Harada does not teach reducing vehicle
speed according to a vehicle position in the turn, when
properly construed, we do not need to reach Carrum’s other
claim construction argument that the controller limitation
requires determining a vehicle position in the turn.
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 9
vehicle’s position within the turn.” 4 ’416 patent, at [57].
The specification expounds this feature, which purports to
address the problem of excessive lateral acceleration in
prior art adaptive cruise control systems that maintained
their set speed while turning. See ’416 patent, col. 2,
ll. 36–40. The specification describes embodiments of the
claimed system and method, which can use known charac-
teristics of a vehicle’s lateral acceleration in a curve “to de-
termine the position in which [the vehicle] is located in the
turn, e.g., in the entry of a turn, in the middle of a turn, or
in the exit of a turn.” Id. at col. 5, ll. 41–45; accord id. at
col. 6, ll. 17–29 (describing a preemptive reduction in speed
after determining a vehicle’s position in the turn by recog-
nizing “patterns exhibited in lateral acceleration data
when a vehicle is in the entry of a turn, in the middle of a
turn, or exiting a turn”). Indeed, the patent explains in de-
tail the relationship between a vehicle’s lateral accelera-
tion and the vehicle’s position along a curve. 5 Id. at col. 5,
ll. 46–64.
Given this intrinsic evidence, we conclude that “a vehi-
cle position in the turn” refers to the position of a vehicle
along the curve of the turn. We are unpersuaded by Uni-
fied’s arguments to the contrary.
4 “[I]n determining the scope of a claim, the abstract
of a patent is a potentially useful source of intrinsic evi-
dence as to the meaning of a disputed claim term.” Tate
Access Floors, Inc. v. Maxcess Techs., Inc., 222 F.3d 958,
965 n.2 (Fed. Cir. 2000).
5 We reject Unified’s contention that Carrum’s reli-
ance on the “e.g.” portion of the specification constitutes an
improper attempt to import a limitation of only those three
positions into the claim. The Latin abbreviations “e.g.” and
“i.e.” have very different meanings and should not be
equated when construing claims.
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10 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
First, Unified argues that Carrum forfeited and waived
its right to seek a construction of “a vehicle position in the
turn.” According to Unified, Carrum forfeited its new pro-
posed construction on appeal because it presented a differ-
ent construction—that “determining when the vehicle is in
a turn” requires detecting—to the Board. Unified also ar-
gues that Carrum waived its new proposed construction on
appeal because Carrum purportedly stated in its sur-reply
to the Board that the controller limitation required no fur-
ther construction.
Under the doctrine of forfeiture, we generally do not
consider arguments that a party failed to present to the
Board. See In re Watts, 354 F.3d 1362, 1367–68 (Fed. Cir.
2004); In re Google Tech. Holdings LLC, 980 F.3d 858, 862
(Fed. Cir. 2020) (“[F]orfeiture is the failure to make the
timely assertion of a right.” (quoting United States v.
Olano, 507 U.S. 725, 733 (1993)). Waiver is the intentional
relinquishment or abandonment of a known right. In re
Google Tech., 980 F.3d at 862.
We conclude that Carrum did not forfeit or waive its
arguments on the proper construction of “a vehicle position
in the turn.” Unified wrongly compares Carrum’s present
arguments on “a vehicle position in the turn” to the dispute
over the construction of “determining when the vehicle is
in a turn” that is not on appeal. Carrum raised its present
arguments in connection with the obviousness section of its
Patent Owner Response. J.A. 1011, 1014–16. For example,
Carrum argues that a skilled artisan would understand
Harada to compare intended and estimated lateral dis-
placements at a single point in time during a turn, “without
regard to the vehicle’s position (i.e., entry, vertex, or exit)
within the turn.” J.A. 1016. In its Reply, Unified charac-
terized this argument as “attempt[ing] to implicitly con-
strue ‘position’ as limited to a turn’s ‘entry, vertex, or exit.’”
J.A. 1141 (quoting J.A. 1016). Unified argued that claim
10 of the ’416 patent “is not so narrow and only requires
determining when the vehicle is in a turn and reducing a
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 11
vehicle speed.” Id. The Board agreed with Unified, finding
that “Harada discloses reducing vehicle speed” and does
not preclude “reducing vehicle speed during a turn.” Uni-
fied, 2020 WL 4004893, at *16. In sum, Carrum presented
its arguments about the proper construction of “a vehicle
position in the turn,” Unified availed itself of the oppor-
tunity to respond to those arguments, and the Board
agreed with Unified. In doing so, the Board implicitly
adopted a construction of the phrase at issue that is incon-
sistent with the phrase’s plain and ordinary meaning when
read in light of the specification.
Carrum’s sur-reply to the Board is not a waiver of its
arguments on the construction of “a vehicle position in the
turn.” Unified reads Carrum’s sur-reply too broadly. Car-
rum stated only that there was no need for further con-
struction of “a controller . . . capable of determining when
the vehicle is in a turn” after (a) Unified admitted that the
controller must “have knowledge that the vehicle is turn-
ing” and (b) Unified’s expert admitted that claim 10 of the
’416 patent requires determining when the vehicle is in a
turn and operativity to reduce vehicle speed according to
the vehicle’s position in the turn. J.A. 1288–89. Carrum’s
statement did not extend to its present arguments on the
construction of “a vehicle position in the turn.”
Second, Unified argues that the plain meaning of “a ve-
hicle position in the turn” includes “whether a vehicle is in
an intended position or not in the turn or a particular loca-
tion on the path or curve such as the curve’s entry or exit.”
Appellee’s Br. 29. According to Unified, claim 10’s recita-
tion of “a vehicle path” demonstrates that Carrum knew
how to “be specific about the particular path the vehicle is
traveling while turning.” Id. at 30. Unified adds that claim
1 of the ’416 patent confirms Carrum knew how to refer to
the vehicle’s path while turning because the claim recites
“determining a vehicle path during the turn,” “determining
whether the object is in the vehicle path during the turn,”
“if the object is determined to be in the vehicle path during
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12 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
the turn,” and “if the object is determined not to be in the
vehicle path during the turn.” Id.
Unified’s broad reading of the claim phrase is unteth-
ered to the specification. As noted, the specification—from
the abstract through the description of the invention—uni-
formly discusses reducing vehicle speed based on the posi-
tion of the vehicle along the curve of the turn. Unified’s
reliance on the claims’ use of “a vehicle path” is misplaced.
Both claim 10 and claim 1 recite “a vehicle path” in the con-
text of solving a different problem with prior art adaptive
cruise control systems—the unnecessary braking or speed
reduction in response to objects outside of the vehicle’s turn
path. See ’416 patent, col. 1, l. 6–col. 2, l. 47. The claimed
features of determining a vehicle’s path and reducing speed
if an object is in that path do not demand a different con-
struction of the controller’s operativity to reduce vehicle
speed according to a vehicle position in the turn.
Finally, Unified argues that the ’416 patent’s disclo-
sures are “mere examples” that are not sufficient to rede-
fine the meaning of “position.” Appellee’s Br. 31. Unified
correctly states our law—non-limiting examples are not
sufficient to redefine a term to have anything other than
its plain and ordinary meaning. See Ancora Techs., Inc. v.
Apple, Inc., 744 F.3d 732, 735 (Fed. Cir. 2014). But we re-
ject Unified’s premise that Carrum seeks to redefine the
phrase at issue. Our construction is the phrase’s ordinary
and customary meaning, as understood by a skilled artisan
when read in the context of the specification. Phillips, 415
F.3d at 1313. For these reasons, the Board erred in its im-
plicit interpretation of “a vehicle position in the turn.”
B. Obviousness
In view of the proper construction of “a vehicle position
in the turn,” substantial evidence does not support the
Board’s finding that Harada teaches the controller limita-
tion. As noted, the controller limitation requires reducing
vehicle speed according to the vehicle’s position in the turn,
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CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC 13
i.e., the position of the vehicle along the curve of the turn.
Harada does not disclose this claim element.
Harada teaches reducing vehicle speed based on the
“difference between the intended and estimated target po-
sitions.” J.A. 548 (col. 5, ll. 54–59). Specifically, if the in-
tended and estimated lateral displacements of a vehicle
have opposite signs and the magnitude of their difference
exceeds a preset reference value, Harada’s ECU estimates
that the running state of the vehicle is unstable and conse-
quently reduces vehicle speed. J.A. 550 (col. 9, ll. 41–51).
These preconditions for reducing vehicle speed may occur
on a snowy or icy road surface, when “the vehicle is running
in a direction opposite to a direction in which the steering
wheel is operated or rotated by the driver.” J.A. 551 (col.
11, ll. 42–48). These disclosures do not teach reducing ve-
hicle speed based on where a vehicle is along the curve of a
turn—e.g., the beginning, middle, or end of the turn or else-
where along that curve.
Unified’s expert testimony also does not provide the
necessary support for the Board’s finding that Harada
teaches reducing speed according to a vehicle’s position in
a turn. Instead, Unified’s expert asserts, in conclusory
fashion, that (a) Harada’s comparison of the intended tar-
get position and the estimated target position is the
claimed vehicle position in the turn and (b) Harada reduces
vehicle speed based on this comparison. J.A. 718. This ex-
pert opinion is also contrary to our construction of “a vehi-
cle position in the turn” because a comparison of a vehicle’s
intended position (where a driver wants the vehicle to be)
and its estimated position (where the vehicle will be) is not
the vehicle’s position in a turn (where along the curve the
vehicle is).
The Board erred by overlooking this shortcoming in
Harada. Indeed, it found only that “Harada discloses re-
ducing vehicle speed” and that Harada does not preclude
reducing vehicle speed during a turn. Unified, 2020 WL
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14 CARRUM TECHNOLOGIES, LLC v. UNIFIED PATENTS, LLC
4004893, at *16. Neither of these findings corresponds to
the language of the controller limitation. Harada’s disclo-
sure of a system that reduces vehicle speed fails to describe
reducing vehicle speed according to a vehicle’s position in a
turn, as claimed. And the fact that Harada teaches reduc-
ing speed even during a turn does not mean that the refer-
ence teaches reducing speed because of where the vehicle
is along the curve.
We are also unpersuaded by Unified’s additional argu-
ments. First, Unified argues that Harada’s operation
closely corresponds to Carrum’s interpretation of its claims
in its district court infringement allegations. While it is
axiomatic that claims are construed the same way for both
invalidity and infringement, Amgen Inc. v. Hoechst Marion
Roussel, Inc., 314 F.3d 1313, 1330 (Fed. Cir. 2003), a pa-
tentee’s infringement contentions do not bind our construc-
tion of claim terms. Second, Unified argues that Harada
does not discourage reducing vehicle speed in a turn. This
argument misapprehends the problem with Harada,
namely, that the reference fails to teach reducing speed ac-
cording to a vehicle’s position in a turn.
III. CONCLUSION
Reversal is appropriate here because the only permis-
sible factual finding is that Harada does not teach the con-
troller limitation, as properly construed. See Corning v.
Fast Felt Corp., 873 F.3d 896, 903 (Fed. Cir. 2017) (revers-
ing where, “[b]ased on the record before us, there is only
one permissible factual finding”). Further, while a paucity
of analysis in the Board’s final written decision commonly
results in another opportunity for the Board to explain its
decision, we find that the Board’s lack of reasoning here on
how Harada discloses the reduction of vehicle speed accord-
ing to a vehicle’s position in the turn instead confirms
Harada’s failure to disclose that element. For the reasons
discussed above, we reverse.
REVERSED