Lyft, Inc. v. Quartz Auto Technologies LLC

NOTE: This disposition is nonprecedential.
United States Court of Appeals
for the Federal Circuit
______________________
LYFT, INC.,
Plaintiff-Appellee
v.
QUARTZ AUTO TECHNOLOGIES LLC,
Defendant-Appellant
______________________
2024-1089
______________________
Appeal from the United States District Court for the
Northern District of California in No. 4:21-cv-01871-JST,
Judge Jon S. Tigar.
______________________
Decided: June 27, 2025
______________________
LAUREN J. DREYER, Baker Botts LLP, Washington, DC,
argued for plaintiff-appellee. Also represented by KARAN
SINGH DHADIALLA, JEREMY TAYLOR, San Francisco, CA.
MICHAEL ROSEN, Irell & Manella LLP, Washington,
DC, argued for defendant-appellant. Also represented by
ANDREW JEFFREY STRABONE, Los Angeles, CA; NICHOLAS T.
PETERS, Fitch, Even, Tabin & Flannery LLP, Chicago, IL.
______________________
Case: 24-1089 Document: 51 Page: 1 Filed: 06/27/2025

-- 1 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 2
Before MOORE, Chief Judge, CHEN and CUNNINGHAM,
Circuit Judges.
CHEN, Circuit Judge.
Quartz Auto Technologies LLC (Quartz) appeals from
a final judgment of the United States District Court for the
Northern District of California of non-infringement of U.S.
Patent Nos. 6,847,871 (’871 patent) and 7,958,215 (’215 pa-
tent) in favor of Lyft, Inc. (Lyft). Quartz contends that the
district court erred in construing the claim term “defective
operational conditions in said automobile” in the ’871 pa-
tent and the claim terms “alert” and “the event” in the ’215
patent. For the reasons below, we affirm.
BACKGROUND
Lyft sought declaratory judgment that it does not in-
fringe certain claims of Quartz’s ’871 and ’215 patents,
among others. Quartz filed counterclaims of infringement.
After briefing from the parties, the district court issued a
claim construction order construing disputed terms in the
’871 and ’215 patents. See Lyft, Inc. v. Quartz Auto Techs.
LLC, No. 21-CV-01871, 2022 WL 19975246 (N.D. Cal. Nov.
3, 2022) (Claim Construction Order). This appeal concerns
the district court’s construction of the following three
terms: (1) “defective operational conditions in said auto-
mobile” in claims 1–5 and 10–14 of the ’871 patent;
(2) “alert” in claims 5 and 14–15 of the ’215 patent; and
(3) “the event” in claims 5, 14, and 16 of the ’215 patent.
Id. at *3–8.
Following the district court’s claim construction order,
the parties stipulated to non-infringement, “agree[ing] that
under the [district] [c]ourt’s constructions of such disputed
terms, the accused instrumentalities do not infringe the as-
serted claims of the ’871 and ’215 patents.” J.A. 13. The
district court entered final judgment with respect to those
claims, from which Quartz appeals. J.A. 11. We have ju-
risdiction under 28 U.S.C. § 1295(a)(1).
Case: 24-1089 Document: 51 Page: 2 Filed: 06/27/2025

-- 2 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 3
DISCUSSION
“We review claim construction based on intrinsic evi-
dence de novo and review any findings of fact regarding ex-
trinsic evidence for clear error.” SpeedTrack, Inc. v.
Amazon.com, 998 F.3d 1373, 1378 (Fed. Cir. 2021). “Claim
terms are generally given their plain and ordinary mean-
ings to one of skill in the art when read in the context of
the specification and prosecution history.” Golden Bridge
Tech., Inc. v. Apple Inc., 758 F.3d 1362, 1365 (Fed. Cir.
2014) (citing Phillips v. AWH Corp., 415 F.3d 1303, 1313
(Fed. Cir. 2005) (en banc)).
I
We turn first to “defective operational conditions in
said automobile” recited in claims 1 and 10 of the ’871 pa-
tent.
A
The ’871 patent is titled “Continuously Monitoring and
Correcting Operational Conditions in Automobiles from a
Remote Location Through Wireless Transmissions” and re-
lates to the use of telecommunications to “continuously
monitor and correct operating conditions in [an] automo-
bile.” ’871 patent col. 1 ll. 10–12. The patent background
explains that with the advent of on-board computing in au-
tomobiles, “self-diagnostics have been built into the auto-
mobile wherein defects or faults are often self-adjusted
within the automobile without any apparent effect on op-
erations.” Id. col. 1 ll. 46–50. However, for more complex
issues—such as “mechanical, physical, or electrical”
faults—the on-board diagnostic system could not self-cor-
rect. Id. col. 1 ll. 50–54. In those more complex cases, the
conventional diagnostic systems had a central storage mod-
ule to log faults and defects that could not be self-adjusted,
so they could be addressed later at a “diagnostic and repair
shop.” Id. col. 1 ll. 54–59; see also id. col. 3 ll. 45–50.
Case: 24-1089 Document: 51 Page: 3 Filed: 06/27/2025

-- 3 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 4
The patent sought to improve upon conventional on-
board diagnostic systems by implementing a telecommuni-
cations system that wirelessly transmits sensor data col-
lected by the automobile to a remote diagnostic center so
that defective conditions may be detected in real-time and
corrected when feasible. Independent claim 1 recites:
1. A system for continuously monitoring and cor-
recting operational conditions in an automobile
comprising:
a plurality of sensing devices in said auto-
mobile each device for respectively contin-
uously sensing an operational parameter of
said automobile;
a wireless transmitter in said automobile
for transmitting said continuously sensed
parameters to a diagnostic station remote
from said automobile;
apparatus in said diagnostic station for an-
alyzing said parameters in order to deter-
mine defective operational conditions in
said automobile; and
apparatus associated with said diagnostic
station for wireless transmission of data
relative to said determined defective oper-
ating conditions back to said automobile.
Id. at claim 1 (emphasis added); see id. at claim 10 (simi-
lar).
B
The district court construed “defective operational con-
ditions in said automobile” as “defective operational condi-
tions in said automobile of the type typically addressed at
a diagnostic and repair center.” Claim Construction Order,
2022 WL 19975246, at *3. Neither party proposed this con-
struction. Lyft proposed construing this term as “an
Case: 24-1089 Document: 51 Page: 4 Filed: 06/27/2025

-- 4 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 5
operational condition that limits or prevents the automo-
bile from operating,” or alternatively, as “an operational
condition of the automobile that may [be] adjusted or cor-
rected.” Id. (alteration in original). Quartz argued that the
term does not require construction but also explained
through its expert that the patent treats the term “as en-
compassing any operational defect that may require an ad-
justment or correction.” Id. (citation omitted).
After rejecting Lyft’s primary proposed construction,
the district court characterized the remaining dispute be-
tween Lyft’s alternative construction and Quartz’s position
as “whether operational conditions like driver attentive-
ness, passenger behavior, and hazardous road conditions
fall within the scope of the asserted claims.” Id. at *4. In
resolving this dispute, the district court rejected Quartz’s
argument that claim 1 covers “any defective operating con-
dition, regardless of whether it is ‘of’ the automobile.” Id.
Instead, the district court determined that “the specifica-
tion makes clear that ‘defective operational conditions’ re-
fers to conditions that are typically addressed at a
diagnostic and repair center,” id., and issued its construc-
tion accordingly “[t]o clarify the types of issues that fall
within the scope of the patent,” id. at *5. In other words,
the limitation refers to automobile-based defects only.
C
Quartz argues that conditions unrelated to the automo-
bile itself—including conditions like driver attentiveness,
passenger behavior, and hazardous road conditions—fall
within the scope of the asserted claims. We disagree.
The claim language alone does not resolve the dispute
between the parties, i.e., whether conditions unrelated to
the automobile itself are included within the scope of “de-
fective operational conditions.” The specification, however,
is decisive here. See Profectus Tech. LLC v. Huawei Techs.
Co., 823 F.3d 1375, 1380 (Fed. Cir. 2016) (“Claim language
must be viewed in light of the specification, which is the
Case: 24-1089 Document: 51 Page: 5 Filed: 06/27/2025

-- 5 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 6
‘single best guide to the meaning of a disputed term.’”
(quoting Phillips, 415 F.3d at 1315)); Lexion Med., LLC v.
Northgate Techs., Inc., 641 F.3d 1352, 1356 (Fed. Cir. 2011)
(“The customary meaning of a claim term is not determined
in a vacuum and should be harmonized, to the extent pos-
sible, with the intrinsic record, as understood within the
technological field of the invention.”).
In the background section, the specification describes
prior art vehicle systems that required a visit to “a diag-
nostic and repair shop” for “mechanical, physical, or elec-
trical” defects that could not be corrected on-board. ’871
patent col. 1 ll. 50–59. The patent purports to improve
upon these prior art systems by enabling detection and cor-
rection of such defects through a remote diagnostic center.
The specification states that what is “pertinent to the in-
vention” is the way in which “defects in automobile operat-
ing conditions requiring advanced detection and correction
by diagnostic and repair centers are detected and con-
trolled” by a remote diagnostic center. Id. col. 3 ll. 12–17
(emphasis added). The specification further underscores
this point with examples of automobile-based parameters
and defects covered by the patent, including “automobile
operating systems,” id. col. 1 ll. 32–33, “valves and gauges,”
id. col. 3 ll. 21–22, and “diminished [tire] traction,” id. col.
5 ll. 14–16. Nowhere does the specification suggest that
“defective operational conditions” encompasses conditions
unrelated to the automobile itself.
Quartz relies on the “diminished traction” example in
the specification to argue that “the specification recognizes
[diminished traction] may result from external factors such
as wet weather conditions as opposed to any defect in the
vehicle itself.” Appellant’s Br. 35; see ’871 patent col. 5 ll.
9–22. But that is not what the specification says. In the
relevant passage, the specification explains that “in the
case where the sensed defect is diminished traction,” the
system may issue an appropriate warning “if the diagnostic
center also becomes aware of potential wet weather
Case: 24-1089 Document: 51 Page: 6 Filed: 06/27/2025

-- 6 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 7
conditions.” ’871 patent col. 5 ll. 15–20 (emphasis added).
In context, the diminished traction is the sensed defect,
and the bad weather is a separate consideration that may
inform the system to issue a warning. The specification
does not state that the external condition (weather) is the
cause of the defect (diminished traction), as Quartz sug-
gests.
Accordingly, we agree with the district court that the
scope of “defective operational conditions,” as would be un-
derstood by a skilled artisan in light of the specification, is
limited to automobile-based defects. Retractable Techs.,
Inc. v. Becton, Dickinson & Co., 653 F.3d 1296, 1305 (Fed.
Cir. 2011) (“In reviewing the intrinsic record to construe
the claims, we strive to capture the scope of the actual in-
vention, rather than strictly limit the scope of claims to dis-
closed embodiments or allow the claim language to become
divorced from what the specification conveys is the inven-
tion.”).
II
We next turn to “alert” and “the event” recited in claims
5 and 14–16 of the ’215 patent.
A
The ’215 patent is titled “System Management Using
Real Time Collaboration” and relates to “managing infor-
mation technology (‘IT’) devices.” ’215 patent col. 1 ll. 6–
10. The background explains that maintaining and man-
aging IT systems is important to avoid “lost productivity
costs incurred when IT systems fail.” Id. col. 1 ll. 26–29. It
also explains that one issue with conventional IT manage-
ment systems is “they do not ensure that the proper admin-
istrator received the alert and is going to take action to
solve the problem.” Id. col. 1 ll. 48–50. The patent notes
that “[w]ithout a means to improve the response to IT prob-
lems, the promise of the information technology revolution
may never be fully achieved.” Id. col. 1 ll. 60–62.
Case: 24-1089 Document: 51 Page: 7 Filed: 06/27/2025

-- 7 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 8
To address these issues, “[t]he present invention pro-
vides a method of improving the response time to IT prob-
lems and ensuring that some[one] will respond to a
problem.” Id. col. 1 l. 66 – col. 2 l. 1. Independent claim 5
recites:
5. A computer-implemented method of managing
an information technology device, comprising:
receiving an alert from a managed infor-
mation technology device;
receiving availability information about a
plurality of candidates;
automatically selecting a candidate quali-
fied and available to respond to the event
from among the plurality of candidates;
automatically assigning responsibility for
the alert to the candidate; and
receiving a reply from the candidate indi-
cating acceptance of responsibility for the
alert.
Id. at claim 5 (emphases added); see id. at claim 14 (simi-
lar).
B
The district court construed “alert” as “notice indicat-
ing a problem with or in a managed IT device.” Claim Con-
struction Order, 2022 WL 19975246, at *6. This was the
construction that Lyft proposed. Quartz asked the district
court to construe this term as “a notice describing an
event.” Id.
The district court noted that nothing in the claim lan-
guage requires an alert to indicate a problem with or in a
managed IT device. Id. However, turning to the specifica-
tion, the district court determined that “the characteriza-
tions of the invention in the specification” combined with
Case: 24-1089 Document: 51 Page: 8 Filed: 06/27/2025

-- 8 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 9
“the lack of embodiments” unrelated to management of an
IT device persuaded it that “the scope of the invention is
limited to problems with or in managed IT devices.” Id. at
*7.
The district court next considered “the event” claim
term. Although this term lacks an explicit antecedent ba-
sis in the claim, the district court relied on the specification
and Quartz’s expert to determine that a skilled artisan
would understand that “the event” relates back to the
claimed “alert,” in that “the event” refers to “the condition
that triggered the alert.” Id. at *7–8. Based on its con-
struction of “alert,” the district court construed “the event”
as “the problem with or in the managed IT device that trig-
gered the alert.” Id.
C
The parties agree that a relationship exists between
“alert” and “the event.” At oral argument, Quartz con-
firmed that it raises no separate claim-construction chal-
lenge for “the event,” and that the constructions of the two
terms “rise and fall together.” See Oral Arg. at 30:25–44,
available at https://oralarguments.cafc.uscourts.gov/de-
fault.aspx?fl=24-1089_05092025.mp3. Quartz also does
not dispute that the terms relate to the management of IT
devices.
Quartz does argue, however, that “alert” and “the
event” need not relate to problems with or in those devices.
In its view, the terms cover a broader range of subject mat-
ter. We disagree. While it is true that independent claims
5 and 14 do not expressly limit “alert” and “the event” to
problems with or in IT devices, the “[c]laim language must
be viewed in light of the specification.” Profectus Tech., 823
F.3d at 1380.
The summary of the invention states that “[t]he pre-
sent invention provides a method of improving the response
time to IT problems and ensuring that some[one] will
Case: 24-1089 Document: 51 Page: 9 Filed: 06/27/2025

-- 9 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 10
respond to a problem.” ’215 patent col. 1 l. 66 – col. 2 l. 1
(emphasis added); id. at Abstract (same); see Forest Lab’ys,
LLC v. Sigmapharm Lab’ys, LLC, 918 F.3d 928, 933 (Fed.
Cir. 2019) (“When a patent describes the features of the
‘present invention’ as a whole, this description limits the
scope of the invention.” (cleaned up)). Other passages re-
inforce that the invention addresses problems with or in IT
devices. See, e.g., ’215 patent col. 1 ll. 60–62 (“Without a
means to improve the response to IT problems, the promise
of the information technology revolution may never be fully
achieved.”); id. col. 4 ll. 1–2 (“In operation, the manage-
ment system uses the monitoring system to detect problem
conditions with the IT device . . . .” (figure reference num-
bers omitted)); id. col. 6 ll. 57–59 (“The monitoring systems
can be any device, system, or computer program capable of
detecting problem conditions in the monitored device.” (fig-
ure reference number omitted)).
The terms “alert” and “event” are likewise tied to prob-
lems with or in IT devices throughout the specification and
are often used interchangeably with each other and with
IT problems. For example, the background section ex-
plains that an issue with prior systems is that they “do not
ensure that the proper administrator received the alert and
is going to take action to solve the problem.” Id. col. 1 ll.
48–50 (emphases added); see also id. col. 3 ll. 64–65 (de-
scribing “a subject matter code for storing a code indicating
the type of problem that generated the alert” (figure refer-
ence number omitted)). The specification also describes
“events and triggers indicating a problem or fault condi-
tion.” Id. col. 3 ll. 29–34 (emphases added); see also id. col.
4 ll. 18–27 (explaining that each monitoring system is
“loaded with a list of alert identifier codes for the types of
problems for which it is designed to monitor” and “monitors
the IT device(s) until one detects an event.” (emphases
added) (figure reference numbers omitted)). Nowhere does
the specification describe an “alert” or “event” as referring
to anything other than a problem with or in an IT device.
Case: 24-1089 Document: 51 Page: 10 Filed: 06/27/2025

-- 10 of 11 --

LYFT, INC. v. QUARTZ AUTO TECHNOLOGIES LLC 11
This “repeated[] and consistent[]” usage “strongly suggests
that” a problem with or in an IT device “should be read as
part of the claim.” Virnetx, Inc. v. Cisco Sys., Inc., 767 F.3d
1308, 1318 (Fed. Cir. 2014); see also UltimatePointer,
L.L.C. v. Nintendo Co., 816 F.3d 816, 823 (Fed. Cir. 2016)
(holding the “district court did not err in construing
‘handheld device’ as ‘handheld direct pointing device’” be-
cause the “specification repeatedly emphasizes that the in-
vention is directed to a direct-pointing system”).
Quartz directs us to one passage in the specification,
’215 patent col. 2 ll. 3–22, where a first paragraph discloses
“[o]ne embodiment” involving “problem condition[s],” and a
second paragraph discloses “[a]nother aspect of the present
invention” using “alert[s]” and “event[s]” without expressly
mentioning IT device problems. But Quartz ignores that
this passage is immediately preceded by a clear statement
that “[t]he present invention provides a method of improv-
ing the response time to IT problems and ensuring that
some[one] will respond to a problem.” ’215 patent col. 1 l.
66 – col. 2 l. 1. Moreover, as already explained, the specifi-
cation uses interchangeably “alert,” “the event,” and “prob-
lems” with IT devices. See Baran v. Med. Device Techs.,
Inc., 616 F.3d 1309, 1316 (Fed. Cir. 2010) (holding that alt-
hough the use of different terms implies that they have dif-
ferent meanings, “that implication is overcome
where . . . the evidence indicates that the patentee used
the . . . terms interchangeably”).
CONCLUSION
We have considered Quartz’s remaining arguments but
find them unpersuasive. For the foregoing reasons, we af-
firm the district court.
AFFIRMED
COSTS
Costs to Appellee.
Case: 24-1089 Document: 51 Page: 11 Filed: 06/27/2025

-- 11 of 11 --