Polaris Innovations Limited v. Brent

Case: 19-1483 Document: 121 Page: 1 Filed: 09/15/2022

United States Court of Appeals
for the Federal Circuit
______________________

POLARIS INNOVATIONS LIMITED,
Appellant

v.

DERRICK BRENT, DEPUTY UNDER SECRETARY
OF COMMERCE FOR INTELLECTUAL PROPERTY
AND DEPUTY DIRECTOR OF THE UNITED
STATES PATENT AND TRADEMARK OFFICE,
Intervenor
______________________

2019-1483
______________________

Appeal from the United States Patent and Trademark
Office, Patent Trial and Appeal Board in No. IPR2017-
01500.

-------------------------------------------------

POLARIS INNOVATIONS LIMITED,
Appellant

v.

DERRICK BRENT, DEPUTY UNDER SECRETARY
OF COMMERCE FOR INTELLECTUAL PROPERTY
AND DEPUTY DIRECTOR OF THE UNITED
STATES PATENT AND TRADEMARK OFFICE,
Intervenor
______________________
Case: 19-1483 Document: 121 Page: 2 Filed: 09/15/2022

2 POLARIS INNOVATIONS LIMITED v. BRENT

2019-1484
______________________

Appeal from the United States Patent and Trademark
Office, Patent Trial and Appeal Board in No. IPR2017-
00901.
______________________

Decided: September 15, 2022
______________________

MATTHEW C. PHILLIPS, Laurence & Phillips IP Law
LLP, Washington, DC, argued for appellant. Also repre-
sented by KEVIN BRENT LAURENCE, DEREK MEEKER; PAUL
EHRLICH, MATTHEW D. POWERS, STEFANI SMITH, Tensegrity
Law Group LLP, Redwood Shores, CA.

MAUREEN DONOVAN QUELER, Office of the Solicitor,
United States Patent and Trademark Office, Alexandria,
VA, argued for intervenor in 2019-1483. Also argued by
OMAR FAROOQ AMIN in 2019-1484. Also represented by
THOMAS W. KRAUSE, ROBERT J. MCMANUS, FARHEENA
YASMEEN RASHEED; MICHAEL S. FORMAN in 2019-1483;
MELISSA N. PATTERSON, Appellate Staff, Civil Division,
United States Department of Justice, Washington, DC.
______________________

Before PROST, CHEN, and STOLL, Circuit Judges.
STOLL, Circuit Judge.
These appeals involve two inter partes review proceed-
ings initiated by NVIDIA Corporation challenging two pa-
tents owned by Polaris Innovations Limited—U.S. Patent
Nos. 6,532,505 and 7,405,993. The Patent Trial and Ap-
peal Board determined that all challenged claims are un-
patentable. Polaris appealed. We remanded the case due
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POLARIS INNOVATIONS LIMITED v. BRENT 3

to Appointments Clause issues and it has now returned.
We affirm.
BACKGROUND
I
These appeals involve two unrelated patents directed
to computer memory. The ’993 patent, at issue in the
19-1484 appeal, relates to an improved control component
configuration. The ’505 patent, at issue in the 19-1483 ap-
peal, involves a shared-resource system in which logical
controls are used to manage resource requests.
A
The ’993 patent is titled “Control Component for Con-
trolling a Semiconductor Memory Component in a Semi-
conductor Memory Module.” ’993 patent, Title. The
specification explains that the control component can send
both address signals and control signals through the same
leads, allowing the control component to perform its func-
tions with fewer leads. See, e.g., id. at col. 2 l. 57–col. 3
l. 23.
On appeal, Polaris’s argument focuses on dependent
claim 2’s requirement that the “semiconductor memory
component comprises a plurality of memory chips.” Id.
at col. 11 ll. 39–40. Claim 2 (and independent claim 1 from
which claim 2 depends) recites:
1. A control component for controlling a semicon-
ductor memory component in a semiconductor
memory module, comprising:
a control unit for generating control signals for con-
trolling read and write access to the semiconductor
memory component and for generating address sig-
nals for addressing memory cells in the semicon-
ductor memory component for read and write
access;
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4 POLARIS INNOVATIONS LIMITED v. BRENT

a plurality of address terminals for providing the
address signals; and
a selection circuit for supplying one of the address
terminals with a selected signal selected between
one of the address signals and one of the control
signals.
2. The control component as claimed in claim 1,
wherein the semiconductor memory component
comprises a plurality of memory chips; and
wherein the control unit generates a first of the
control signal for selecting one of the memory chips
for read and write access.
Id. at col. 11 ll. 25–43 (emphasis added to disputed limita-
tion). Polaris correlates the terms in claim 2 to Figures 1
and 2 of the ’993 patent, shown in a combined fashion be-
low:

FIG 1

FIG 2A

t'-. HB SEMICONDUCTOR
MEMORY COMPONENT

19-1484 Appellant’s Br. 7 (annotating ’993 patent, Figs. 1
& 2A). As described in the claims and shown in the figures
above, the chips (C) are a part of the semiconductor
memory component (HB) which is integrated into the
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POLARIS INNOVATIONS LIMITED v. BRENT 5

semiconductor memory module (HM). The semiconductor
memory module also includes a control component (SB).
B
The ’505 patent describes a “universal resource access
controller” (104) for directing requests for a shared re-
source, such as a shared memory (108):

system bus
106

Look-up
f .( ••••••••••• Table
untversal 118

i
1
address bus
106·1
110
command
200
memory
command 108
it===::::;;:::::;v1 sequencer (shared
resource)
processor ! oommand bus 116
102
(system)
I
i 106•2

configurable
resource
state
sequenced
universal
command
220
system lntorface resource
tags
i1¢::.;;:::::==v 114
data bus
106-3
universal
··········--······t _ _ _ _ _ _ __, ' controller
104

Fig. 1B

’505 patent, Fig. 1B; see also id. at Title.
The ’505 patent discloses that the controller uses cer-
tain information to direct shared-resource requests, includ-
ing: (1) the “current state” of the shared resource, id.
at col. 7 ll. 3–29, (2) the “requested state” of a shared re-
source, id. at col. 27 l. 41–col. 30 l. 19, and (3) a “character-
istic operating parameter” of the shared resource, id.
at col. 7 l. 61–col. 8 l. 23, col. 8 l. 56–col. 9 l. 5. The dispute
on appeal centers on this shared-resource request infor-
mation, and in particular where that information is stored.
Dependent claim 2 requires these pieces of information to
be stored in certain “buffers,” as recited below:
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6 POLARIS INNOVATIONS LIMITED v. BRENT

1. A universal resource access controller coupled to
a requesting system and a resource, wherein when
the requesting system desires access to the re-
source, the requesting system generates a resource
access request which is passed to the universal re-
source controller which, in turn, uses a specific
characteristic operating parameter of the re-
quested resource, a current state of the requested
resource, and a requested state of the requested re-
source to generate a corresponding sequenced com-
mand suitable for accessing the resource as
required by the requesting system.
2. A universal resource access controller as recited
in claim 1, wherein the universal resource control-
ler comprises:
a configurable system interface coupled to the re-
questing system suitably arranged to both receive
the resource access request and to generate a cor-
responding universal command;
a universal command sequencer coupled to the con-
figurable system interface;
a resource tag buffer coupled to the command se-
quencer arranged to store a resource tag arranged
to identify the current state of the requested resource
and a resource tag arranged to identify the re-
quested state of the requested resource; and
a characteristic operating parameter buffer cou-
pled to the command sequencer arranged to store
the characteristic operating parameter associated
with the requested resource,
wherein the universal command sequencer uses
the respective resource tags that identify the cur-
rent state and the requested state of the requested
resource and the characteristic operating
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POLARIS INNOVATIONS LIMITED v. BRENT 7

parameter associated with the requested resource
to generate the sequenced universal command.
Id. at col. 27 l. 41–col. 28 l. 6 (emphasis added to disputed
limitation). As described in claim 2, the “current state” and
the “requested state” resource tags are stored in a “resource
tag buffer,” the disputed term on appeal.
Apart from the claims themselves, the description of
the “resource tag buffer” in the specification is light. The
specification mentions “resource tag buffer” or “tag buffer”
only six times and illustrates that buffer in only two figures
(one being Figure 1B, above). Id. at col. 7 l. 31, col. 7
ll. 50–51, col. 7 l. 56, col. 7 l. 59, col. 8 l. 67, col. 10 l. 43,
Figs. 1B & 1D. These portions of the specification are not
illuminating as to the structure of this buffer. Instead,
they describe the buffer functionally as storing certain re-
source tags. And the two figures merely depict the “re-
source tags 114” as a rectangular box, with no further
detail.
II
These appeals involve two IPR proceedings that were
remanded by our court in light of our decision in Arthrex,
Inc. v. Smith & Nephew, Inc., 941 F.3d 1320 (Fed. Cir.
2019) (Arthrex I) due to Appointments Clause issues.
While the IPR was on remand, the Supreme Court vacated
our decisions vacating the Board’s final written decisions
based on its decision in United States v. Arthrex, Inc.,
141 S. Ct. 1970 (2021) (Arthrex II). This vacated vacatur
thus reinstated the Board’s final written decisions and led
to a dispute regarding a joint motion to terminate that was
filed during remand, as explained below.
In May 2016, Polaris filed a complaint accusing
NVIDIA of infringing certain claims of the ’505 and ’993 pa-
tents, among others. NVIDIA responded by filing IPR pe-
titions challenging certain claims in those patents.
NVIDIA filed its petition against the ’993 patent on
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8 POLARIS INNOVATIONS LIMITED v. BRENT

February 14, 2017, and the Board issued its final written
decision on December 19, 2018, holding all challenged
claims unpatentable. NVIDIA Corp. v. Polaris Innovations
Ltd., No. IPR2017-00901, 2018 WL 6720618 (P.T.A.B.
Dec. 19, 2018) (’993 Decision). NVIDIA filed its petition
against the ’505 patent on May 30, 2017, and the Board is-
sued its final written decision on December 4, 2018, hold-
ing all challenged claims unpatentable. NVIDIA Corp. v.
Polaris Innovations Ltd., No. IPR2017-01500, 2018 WL
6380663 (P.T.A.B. Dec. 4, 2018) (’505 Decision).
Polaris appealed both decisions. Polaris and NVIDIA
then settled, and thus NVIDIA withdrew from these ap-
peals. The PTO intervened in the appeals to defend the
Board’s decisions. On March 20, 2020, the cases were cal-
endared for argument on May 8, 2020. Three days later,
our court declined to rehear Arthrex I en banc. 1 Accord-
ingly, we vacated the Board’s decisions and remanded,
granting the remedy required by us in Arthrex I. 19-1484
ECF No. 65; 19-1483 ECF No. 68.
On remand, the Board administratively suspended the
IPRs (along with many others) pending potential Supreme
Court action in Arthrex I. During that administrative sus-
pension, on June 10, 2020, Polaris and NVIDIA filed a joint
motion to terminate the proceedings. 19-1484 SAppx. 7–15
(joint motion to terminate); 19-1483 SAppx. 7–15 (same). 2

1 The panel decision on Arthrex I issued on October
31, 2019, well before argument was scheduled, but the
court did not decline to rehear the case en banc until March
23, 2020, three days after oral argument was scheduled in
this case.
2 19-1483 SAppx. citations herein refer to the appen-
dix filed concurrently with Appellant’s Motion to Vacate Fi-
nal Decision. 19-1483 ECF No. 90.
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POLARIS INNOVATIONS LIMITED v. BRENT 9

While those motions were pending at the Board, the
Supreme Court vacated our decision in Arthrex I, substi-
tuting an alternative remedy for violation of the Appoint-
ments Clause. Arthrex II, 141 S. Ct. at 1987–88. In view
of its decision in Arthrex II, the Supreme Court vacated our
vacatur of the Board’s final written decisions in these Po-
laris appeals, thus reinstating the Board’s final written de-
cisions. 19-1484 SAppx. 26; 19-1483 SAppx. 25. On
remand, we reinstated the appeals and asked Polaris to ex-
plain “how it believes its case should proceed in light of Ar-
threx [II].” 19-1484 ECF No. 73; 19-1483 ECF No. 72.
Polaris argued that we should vacate and remand for the
Board to grant termination. The PTO opposed and sug-
gested limited remand for Director review was appropriate.
We remanded “for the limited purpose of allowing the par-
ties to seek further action by the Director.” 19-1484 ECF
No. 84; 19-1483 ECF No. 76.
On remand, Polaris asked the Board for guidance re-
garding how the remand should proceed. Polaris advocated
that the Board should grant Polaris’s then-still-pending
motion to terminate. 19-1484 SAppx. 25–26; 19-1483
SAppx. 24–25.
Chief Administrative Judge Boalick responded on be-
half of the Board on October 29, 2019, in an “Order” speci-
fying the appropriate process on remand. 19-1484
SAppx. 25–27; 19-1483 SAppx. 24–26. The Board deter-
mined that termination was not appropriate because, due
to the Supreme Court’s decision, the “final written decision
in each of these cases is not vacated, and it is not necessary
for the Board to issue a new final written decision in either
of these cases.” 19-1484 SAppx. 27; 19-1483 SAppx. 26. In-
stead of termination, the Board determined “the appropri-
ate course of action on remand . . . [wa]s to authorize
[Polaris] to request Director review.” 19-1484 SAppx. 27;
19-1483 SAppx. 26. This order effectively denied the joint
motions to terminate.
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10 POLARIS INNOVATIONS LIMITED v. BRENT

Polaris filed its requests for Director rehearing.
Mr. Hirshfeld, performing the functions and duties of the
Director, denied rehearing. Polaris then filed notices with
our court notifying us of the Director’s denial of rehearing.
In the 19-1484 appeal, Polaris filed an amended notice
of appeal indicating it was challenging the denial of the mo-
tion to terminate. We ordered supplemental briefing on
this issue. The parties complied.
In the 19-1483 appeal, on March 23, 2022, Polaris filed
a motion for this court to vacate the Board’s final written
decision and remand for termination. This motion is sub-
stantively the same as Polaris’s supplemental briefing in
the 19-1484 appeal. The PTO responded to the motion in
April 2022, and Polaris replied in May 2022.
We have jurisdiction under 28 U.S.C. § 1295(a)(4)(A).
DISCUSSION
Polaris raises three principal arguments on appeal.
First, it argues that the Board erred by failing to grant the
joint motions to terminate filed in both proceedings before
the Board on remand. Second, it argues that the Board
misconstrued the term “memory chip” in the IPR involving
the ’993 patent. Third, it argues the Board misconstrued
the term “resource tag buffer” in the IPR involving the
’505 patent. We affirm.
The motion-to-terminate issue ultimately turns on in-
terpretation of 35 U.S.C § 317—which governs settlement
of IPRs at the Board—and is therefore a question of law
that we review de novo. VirnetX Inc. v. Apple Inc., 931 F.3d
1363, 1369 (Fed. Cir. 2019). We also “set aside actions of
the Board that are arbitrary, capricious, an abuse of dis-
cretion, or otherwise not in accordance with law.” In re
Sullivan, 362 F.3d 1324, 1326, 1328 (Fed. Cir. 2004);
5 U.S.C. § 706(2)(A).
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POLARIS INNOVATIONS LIMITED v. BRENT 11

The Board’s ultimate claim constructions and any un-
derlying determinations based on intrinsic evidence like-
wise present a question of law that we review de novo.
Personalized Media Commc’ns, LLC v. Apple Inc., 952 F.3d
1336, 1339 (Fed. Cir. 2020). We review for substantial ev-
idence any subsidiary factual findings involving extrinsic
evidence. Id.
The broadest reasonable interpretation claim construc-
tion standard applies in this IPR proceeding. 3 Thus, the
Board’s interpretation must be reasonable in light of the
specification, prosecution history, and the understanding
of one skilled in the art. See Microsoft Corp. v. Proxyconn,
Inc., 789 F.3d 1292, 1298 (Fed. Cir. 2015), overruled on
other grounds by Aqua Prods., Inc. v. Matal, 872 F.3d 1290
(Fed. Cir. 2017) (en banc). The broadest reasonable inter-
pretation must also take into account “the context of the
entire patent.” Realtime Data, LLC v. Iancu, 912 F.3d
1368, 1374 (Fed. Cir. 2019) (quoting Phillips, 415 F.3d
at 1312–13); see also In re Translogic Tech., Inc., 504 F.3d
1249, 1256–58 (Fed. Cir. 2007) (applying Phillips “best
practices” to claim construction under broadest reasonable
interpretation standard).

3 Per regulation, the Board applies the Phillips claim
construction standard to IPR petitions filed on or after No-
vember 13, 2018. See Changes to the Claim Construction
Standard for Interpreting Claims in Trial Proceedings Be-
fore the Patent Trial and Appeal Board, 83 Fed. Reg.
51,340 (Oct. 11, 2018) (codified at 37 C.F.R. § 42.100(b));
Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005). Be-
cause NVIDIA filed the petitions before November 13,
2018, the broadest reasonable interpretation standard ap-
plies to the IPR decisions on appeal.
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12 POLARIS INNOVATIONS LIMITED v. BRENT

I
We first address Polaris’s argument that the Board
erred in denying its motion to terminate. As explained in
detail below, because the Board decided the merits of the
IPR before Polaris filed its motion to terminate, Polaris’s
motion was untimely. Furthermore, the Board properly ex-
ercised its discretion to terminate or continue the IPR pro-
ceeding. We thus affirm. 4
Section 317 of Title 35 governs settlement of IPRs at
the Board. Section 317(a) is reproduced in full below:
An inter partes review instituted under this chap-
ter shall be terminated with respect to any peti-
tioner upon the joint request of the petitioner and
the patent owner, unless the Office has decided the
merits of the proceeding before the request for ter-
mination is filed. If the inter partes review is ter-
minated with respect to a petitioner under this
section, no estoppel under section 315(e) shall at-
tach to the petitioner, or to the real party in inter-
est or privy of the petitioner, on the basis of that
petitioner’s institution of that inter partes review.
If no petitioner remains in the inter partes review,
the Office may terminate the review or proceed to
a final written decision under section 318(a).
Id. (emphases added). Section 317(a) includes a mandate
with a time limit (“shall be terminated”) and a separate
discretionary authority (“may terminate the review or pro-
ceed”). It specifies that the proceeding “shall be terminated
with respect to any petitioner” upon joint request of the
parties. Id. This termination of a petitioner is only

4 In the 19-1483 appeal, Polaris filed a motion to va-
cate the Board’s final written decision. 19-1483 ECF
No. 89. We deny that motion for the same reasons dis-
cussed herein with respect to the 19-1484 appeal.
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POLARIS INNOVATIONS LIMITED v. BRENT 13

mandatory so long as the request for termination is filed
before “the Office has decided the merits of the proceeding.”
Id. The termination of petitioners notwithstanding, the
statute grants discretion to the Board to “proceed to a final
written decision under section 318(a)” even if “no petitioner
remains” in the proceeding. Id.; see also, e.g., Aqua Prods.,
872 F.3d at 1311 (“The final sentence of § 317(a) gives the
Board the option to proceed to final judgment in any pro-
ceeding where the original petitioners choose not to con-
tinue their challenge.”); Regents of the Univ. of Minn.
v. LSI Corp., 926 F.3d 1327, 1336 (Fed. Cir. 2019) (“The
statutory provision [§ 317(a)] states that if the petitioner
stops participating, the Board may continue on to a final
written decision.”).
On appeal, Polaris argues that it was entitled to termi-
nation of both IPR proceedings because it timely filed its
joint motions to terminate. 19-1484 Appellant’s Suppl.
Br. 11–17. We disagree for two independent reasons.
First, the statute provides no mandatory right to termina-
tion of the proceeding; at best, the statute provides for man-
datory termination with respect to a petitioner, not
termination of the proceeding itself. As regards termina-
tion of the proceeding, § 317(a) states that the Board “may
terminate the review” if, as is the case here, no petitioner
remains in the proceeding. Thus, the plain language of the
statute gives the Board discretion to carry on to a final
written decision—even without any petitioner.
Second, the Board correctly identified Polaris’s motion
as untimely. The Board issued its final written decisions
in these cases in December 2018. Polaris filed its joint mo-
tions to terminate more than a year later, in June 2020.
Thus, the Board had already “decided the merits” at the
time Polaris filed its motion. Chief Administrative Judge
Boalick recognized the timing issue in his order on remand,
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14 POLARIS INNOVATIONS LIMITED v. BRENT

which effectively denied the motions to terminate. 5 There,
he explained that the “Board’s final written decision in
each of these cases is not vacated, and it is not necessary
for the Board to issue a new final written decision in either
of these cases.” 19-1484 SAppx. 27; 19-1483 SAppx. 26.
Accordingly, the Board determined that the proper course
was not to terminate the proceedings, as Polaris urged, but
instead to allow Polaris to seek Director review. Id.
Although the final written decisions had been vacated
for a time period after our decision in Arthrex I, that vaca-
tur itself was vacated by the Supreme Court. This explains
why Chief Administrative Judge Boalick’s order noted that
the decisions were not vacated at the time the Board was
considering the motions to terminate. We thus affirm the
Board’s decision not to terminate the proceedings under
§ 317(a) because the motions to terminate were untimely.
Polaris also argues that the Board’s decision not to ter-
minate was arbitrary because the Board terminated other
proceedings with similar Arthrex remands, noting that the
motions to terminate in those other proceedings were filed
around the same time Polaris filed its motions. 19-1484
Appellant’s Suppl. Br. 17–24 (citing Samsung Elecs. Am.,
Inc. v. Uniloc 2017, LLC, No. IPR2017-01797, Paper 39
(P.T.A.B. July 21, 2020); Fidelity Info. Servs., LLC v. Mir-
ror Imaging, LLC, No. CBM2017-00061, Paper 70
(P.T.A.B. July 21, 2020); Samsung Elecs. Co. v. Image Pro-
cessing Techs. LLC, No. IPR2017-00353, Paper 45
(P.T.A.B. Sept. 9, 2020)). Polaris argues that the disparate
treatment it received was impermissible under the Admin-
istrative Procedure Act’s requirement for reviewing courts
to set aside agency action that is “arbitrary, capricious, an

5 At oral argument, Polaris agreed this order was an
“effective denial” of its motion to terminate. 19-1484 Oral
Arg. at 3:57–4:50, https://oralarguments.cafc.uscourts.gov/
default.aspx?fl=19-1484_08012022.mp3.
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POLARIS INNOVATIONS LIMITED v. BRENT 15

abuse of discretion, or otherwise not in accordance with
law.” 19-1484 Appellant’s Suppl. Br. 9 (quoting 5 U.S.C.
§ 706(2)(A)).
The Board’s decision denying termination was not ar-
bitrary and instead rested on a significant difference be-
tween those cases and Polaris’s. In those cases, the Board
considered the motion and terminated the proceedings
while the final written decisions stood vacated by our court
after the mandate issued in Arthrex I. Here, our vacatur
pursuant to Arthrex I had already been vacated by the Su-
preme Court at the time the Board was evaluating Polaris’s
motions.
At its core, Polaris’s complaint is not that the cases are
indistinguishable, but instead that the Board took too long
to act in its case. See, e.g., 19-1484 Appellant’s Supp.
Br. 14–15 (arguing “the Board should have granted the
[motion to terminate] promptly after it was filed” and “the
fact that the Board sat on the [motion to terminate] for over
a year should not be held against Polaris”). Polaris, how-
ever, points to no authority mandating that the Board act
on its request within any particular time frame. 6 The dis-
parity in timing—the Board taking longer to act on Pola-
ris’s motions than Polaris thinks it should have—is not the
sort of arbitrariness in decision-making that § 706(2)(A)’s
“arbitrary [and] capricious” standard was designed to pro-
tect against. Even if the disparate result could be viewed
as “arbitrary,” in the broader sense of the word, based on

6 For the first time at oral argument, Polaris con-
tended that the Board should have acted on its motion ear-
lier pursuant to 5 U.S.C. § 706(1), which permits a
reviewing court to “compel agency action unlawfully with-
held or unreasonably delayed.” See 19-1484 Oral Arg.
at 7:51–8:34. This argument was not included in its briefs
and is therefore waived. See ABS Glob., Inc. v. Cyto-
nome/ST, LLC, 984 F.3d 1017, 1027 (Fed. Cir. 2021).
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16 POLARIS INNOVATIONS LIMITED v. BRENT

the timing of the Supreme Court’s action in this case while
Polaris’s motion was still pending, the denial was not the
product of arbitrary decision-making by the agency. In ad-
dition, we simply cannot agree that the Board’s decisions
to continue these IPRs were arbitrary when the last sen-
tence of § 317(a) gives the Board discretion to either “ter-
minate the review or proceed to a final written decision.”
In sum, the Board had already decided the merits of
the cases in final written decisions that were not vacated
at the time the Board made its decision denying Polaris’s
motions to terminate. This determination was not arbi-
trary. We thus affirm the Board’s decision that termina-
tion was inappropriate.
II
Next, we turn to Polaris’s argument that the Board
misconstrued the claim terms “memory chips” and “semi-
conductor memory component” within the claim phrase
“wherein the semiconductor memory component comprises
a plurality of memory chips” in claim 2 of the ’993 patent.
We disagree.
Polaris makes these claim construction arguments to
avoid the asserted prior art. In its IPR petition, NVIDIA
presented prior art that included multiple, separately
packaged integrated circuit dies (such as that illustrated
below) that NVIDIA argued collectively constituted a “sem-
iconductor memory component” that “comprises a plurality
of memory chips” as required by claim 2. ’993 patent col. 11
ll. 39–40; see, e.g., 19-1484 J.A. 178–79, 208.
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POLARIS INNOVATIONS LIMITED v. BRENT 17

4 5 1

30

16 15 14 13 12 11 10 9
FIG. 2
See, e.g., 19-1484 J.A. 1498. The Board agreed that this
disclosure taught the claimed “semiconductor memory
component” comprising “a plurality of memory chips.”
’993 Decision, 2018 WL 6720618, at *17.
On appeal, Polaris argues (as it did before the Board)
that the proper construction of “memory chips” and “semi-
conductor memory component” excludes the above ar-
rangement (that is, multiple, separately packaged
integrated circuit dies) and only contemplates multiple un-
packaged dies within a single package. See, e.g., 19-1484
Appellant’s Br. 8 (arguing “NVIDIA could only find single-
die-in-a-package prior art”); id. at 24 (arguing that “the
’993 Patent always uses the term ‘semiconductor memory
component’ or just ‘memory component’ to refer to a pack-
aged device, and always uses the term ‘memory chip’ to re-
fer to an IC memory die packaged within a component”);
id. at 56–57. The Board disagreed with Polaris, refusing to
limit the broad claim language “memory chips”—which or-
dinarily encompasses either packaged integrated circuits
or unpackaged dies—to a particular embodiment in the
specification. ’993 Decision, 2018 WL 6720618, at *6 (citing
Thorner v. Sony Comput. Ent. Am. LLC, 669 F.3d 1362,
1366 (Fed. Cir. 2012) (“It is not enough for a patentee to
simply disclose a single embodiment or use a word in the
same manner in all embodiments[;] the patentee must
‘clearly express an intent’ to redefine the term.”)). Because
Polaris points to no persuasive evidence supporting its
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18 POLARIS INNOVATIONS LIMITED v. BRENT

proposed claim constructions, we adopt the Board’s con-
structions and affirm its unpatentability determination.
Polaris conceded before the Board (as it should have)
that the term “memory chip” would have been understood
by a person of ordinary skill as either a packaged inte-
grated circuit or an unpackaged integrated circuit die. 19-
1484 J.A. 383 (Patent Owner’s Response) (quoting 19-1484
J.A. 1525–26 (Przybylski Decl. ¶ 48)). Thus, as the Board
correctly recognized, Polaris must find support in the in-
trinsic record to limit the broad claim language only to the
latter option. See Thorner, 669 F.3d at 1365 (explaining
that there “are only two exceptions” to the general rule that
terms are given their “ordinary and customary meaning as
understood by a person of ordinary skill in the art when
read in the context of the specification and prosecution his-
tory”—lexicography and disavowal). Our examination of
the intrinsic record establishes that Polaris has not done
so.
First, the plain claim language does not support Pola-
ris’s interpretation. Claim 2 simply recites that the “semi-
conductor memory component comprises a plurality of
memory chips.” ’993 patent col. 11 ll. 39–40. The claim
makes no mention of particular packaging required (or for-
bidden) and does not use the term “die.”
The specification likewise does not equate the term
“die” with a memory chip or describe the memory chip in
terms of its packaging (or lack thereof). Polaris points to
very little in the specification to support its narrow con-
struction. It relies exclusively on Figures 1 and 2A, and
their corresponding descriptions in the specification, which
it describes as “the only relevant disclosure,” 19-1484 Ap-
pellant’s Br. 38:
Case: 19-1483 Document: 121 Page: 19 Filed: 09/15/2022

POLARIS INNOVATIONS LIMITED v. BRENT 19

FIG 2A

'- HB SEMICO DUCTOR
MEMORY CO PONEIIT

Id. (annotating ’993 patent, Figs. 1 & 2A).
Finally, the prosecution history does not support Pola-
ris’s construction. As the Board noted—and Polaris does
not contest on appeal—the first office action was a notice of
allowability. ’993 Decision, 2018 WL 6720618, at *5. Thus,
there was no amendment nor argument to support Pola-
ris’s narrow construction.
On appeal, Polaris makes several arguments. None are
persuasive.
First, Polaris argues that “memory chip” means “either
an [integrated circuit] die or a packaged [integrated circuit]
. . . not both.” 19-1484 Appellant’s Br. 27. But the Board
did not conclude that “memory chip” must be “both” a pack-
aged and an unpackaged die; it simply concluded, based on
Polaris’s concession, that the term “memory chip” broadly
encompasses either. In Polaris’s own words: “In general,
the term ‘chip’ can ‘refer to either a packaged integrated
circuit or a single die.’” 19-1484 J.A. 383 (Patent Owner’s
Response) (quoting J.A. 1525 (Przybylski Decl. ¶ 48));
’993 Decision, 2018 WL 6720618, at *4–5, *7 (Board repeat-
edly relying on this admission). Polaris argues that the
’993 patent makes “clear” that the term “chip” is limited to
single dies. 19-1484 Appellant’s Br. 37–39. But Polaris’s
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20 POLARIS INNOVATIONS LIMITED v. BRENT

argument rests on importing that limitation from an em-
bodiment in the figures, which is improper. See Liebel-
Flarsheim Co. v. Medrad, Inc., 358 F.3d 898, 913 (Fed. Cir.
2004) (“[I]t is improper to read limitations from a preferred
embodiment described in the specification—even if it is the
only embodiment—into the claims absent a clear indication
in the intrinsic record that the patentee intended the
claims to be so limited.”).
Second, Polaris argues the Board violated the principle
of claim differentiation because the Board’s construction
eliminates the difference between claim 1, which allows
single-chip or multiple-chip semiconductor memory compo-
nents, and claim 2, which requires a plurality of chips.
19-1484 Appellant’s Br. 28–29. But the distinction be-
tween the claims regarding number of chips in a semicon-
ductor memory component remains whether or not the
chips are individually packaged. Thus, the Board did not
violate the principle of claim differentiation.
We have considered Polaris’s remaining arguments in
support of its construction and find them unpersuasive.
Accordingly, we agree with the Board’s construction of
“memory chips” which encompasses either packaged or un-
packaged dies. Because we decide that the term “memory
chips” includes packaged dies, we reject Polaris’s addi-
tional argument that the ’933 patent “always uses the term
‘semiconductor memory component’ . . . to refer to a pack-
aged device” to the extent that it would collaterally limit
the term “memory chip” to an unpackaged die. See, e.g.,
19-1484 Appellant’s Br. 24. We agree with the Board that
Polaris has not identified “anything in the specification or
prosecution history” limiting “semiconductor memory com-
ponent” to a packaged device rather than its full scope in
claim 2, which “includes one or more memory chips” that
each may be unpackaged or packaged die. See ’993 Deci-
sion, 2018 WL 6720618, at *5–7.
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POLARIS INNOVATIONS LIMITED v. BRENT 21

Polaris does not dispute that the prior art discloses all
claim limitations under the Board’s claim constructions.
Accordingly, we affirm the Board’s unpatentability deter-
mination as to the ’993 patent.
III
Next, we consider Polaris’s argument that the Board
misconstrued the claim term “resource tag buffer” in
claim 2 of the ’505 patent. At its core, Polaris’s argument
challenges the Board’s application of its expert’s definition
of “single buffer” to the prior art, not the Board’s claim con-
struction itself (which adopted the expert’s definition). Ac-
cordingly, we also discuss the Board’s application of the
term in evaluating the prior art.
A
On appeal, Polaris contends that “[t]he Board errone-
ously interpreted [‘resource tag buffer’] to encompass any
storage that collectively stores A and B, even if not in the
same buffer.” 19-1483 Appellant’s Br. 39–40; see also id.
at 36 (arguing the term does not allow “a set of buffers that
collectively store” the resource tags (emphasis added)), 56
(arguing the “specification does not disclose two separate
buffers storing [the required] resource tags, like the prior
art in this case” (emphasis added)). In other words, Polaris
argues the Board erroneously construed the term “resource
tag buffer” to include multiple buffers, not just a single
buffer.
But this is not what the Board did. The Board found
that the prior art disclosed storing the resource tags in a
“single buffer” as that term was defined by Polaris’s expert.
Thus, the bulk of Polaris’s argument on appeal—contend-
ing that the Board erroneously construed “resource tag
buffer” to cover multiple buffers—is founded on a faulty
premise. See, e.g., 19-1483 Appellant’s Br. 53–56 (empha-
sizing a supposed “single-buffer structure” illustrated in
Figures 1B and 1D).
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22 POLARIS INNOVATIONS LIMITED v. BRENT

In analyzing the prior art, the Board applied the “sin-
gle buffer” definition proffered by Polaris’s expert. Pola-
ris’s expert, Dr. Steven Przybylski, testified that a single
buffer “must be logically or physically a single entity.”
’505 Decision, 2018 WL 6380663, at *6 (quoting 19-1483
J.A. 1222–23 (Przybylski Decl. ¶38)). Dr. Przybylski ex-
plained that “[l]ogical unity involves storing one or more
values of the same type, typically with a common input and
common output.” 19-1483 J.A. 1223 (Przybylski Decl.
¶ 38). He noted that values stored in a buffer are “of the
same type” if they have “a commonality of purpose or us-
age.” Id.
We see no error in the Board’s adoption of this con-
struction, which is supported by and consistent with the
specification. As the Board noted, the specification men-
tions the phrases “resource tag buffer 114” or “tag buffer
114” only six times and illustrates it in only two figures.
’505 Decision, 2018 WL 6380663, at *4 (citing ’505 patent
col. 7 l. 31, col. 7 ll. 50–51, col. 7 l. 56, col. 7 l. 59, col. 8 l. 67,
col. 10 l. 43, Figs. 1B & 1D). The Board correctly observed
that none of these passages discloses a particular structure
for the buffer. Instead, these passages describe the buffer
functionally based on the type of data stored—resource
tags. See, e.g., ’505 patent col. 7 ll. 30–37 (describing that
“command sequencer 116” creates a “sequenced command
220” “[u]sing the resource state information provided by
the tags 300 stored in a resource tag buffer 114”).
As for the figures, the Board correctly noted they “do
not provide any additional insight on the structure of a re-
source tag buffer.” ’505 Decision, 2018 WL 6380663, at *4.
Instead, they merely illustrate a box in a high-level dia-
gram:
Case: 19-1483 Document: 121 Page: 23 Filed: 09/15/2022

POLARIS INNOVATIONS LilvHTED v. BRENT 23

'x S}'$tembus
106

f ( ......... univeisal
command

!1 addressbus
106·1
110 200 ~ ~- - ,

..........._
commatld t - - - - - +--,.---+t
sequencer
memo')!
108
(snared
proe,ssori comnand bus t 16 resource)
102
{sys:emJ i: 1062
· resoun;c
state
sequenced
universal
i
:
collligurable
SY$l &m interface
command
220

!tc=::;;:::::=~
j data bus

i ·······~~~::.....L __ _ _ _ __ _ ___,,______ universal
eontroller
104

'505 patent, Fig. lB (annotation added) .
Before the Board, Polaris argued that the figures
showed the tags must be stored in "one place" because the
figures depict a single box. 19-1483 J.A. 443 (Patent
Owner's Response). But the Board correctly noted that, to
the extent this required the "buffer" to be a single, physical
unit, this was contradicted by the specification, Polaris's
expert's declaration, and Polaris's statements at oral argu-
ment. In particular, the Boa1·d relied on the following pas-
sage in the specification, which discloses that resource tags
"may be located in dispa1·ate locations":
[I]n order to t1·ack a state of the physical pages in
the shared memory 108 having a number of
memory banks, for example, a large number of re-
source tags which would require a large amount of
cache memory dedicated to the resource tag buffer
114 are needed. This would slow the performance
of the universal controller 104 since it would re-
quire substantial amounts of time to retrieve par-
ticular resource tags for particular pages of
memory each of which may be located in disparate
locations.
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24 POLARIS INNOVATIONS LIMITED v. BRENT

’505 patent col. 10 ll. 39–47. 7 The Board also relied on Po-
laris’s concession at oral argument that the resource tag
buffer “need not be a contiguous unit.” ’505 Decision,
2018 WL 6380663, at *5 (quoting 19-1483 J.A. 603 (Hr’g
Tr. 32:4–11)). Rather, as Polaris and its expert explained,
the buffer “must, either logically or physically[,] be a unit.”
Id. (quoting 19-1483 J.A. 603 (Hr’g Tr. 32:13–17) (emphasis
added)).
We conclude that the Board correctly adopted Polaris’s
expert’s definition of “single buffer” as the broadest reason-
able interpretation consistent with the specification. We
have considered Polaris’s other arguments challenging the
Board’s claim construction and find them unpersuasive.
Accordingly, we adopt the Board’s construction of “resource
tag buffer.”
B
Next, we turn to the Board’s finding that both Chauvel 8
and Hughes 9 disclose a resource tag buffer as properly con-
strued. ’505 Decision, 2018 WL 6380663, at *11–13, *24–
26. We review the Board’s findings regarding the scope and
content of the prior art for substantial evidence. Ama-
zon.com, Inc. v. Barnesandnoble.com, Inc., 239 F.3d 1343,
1358 (Fed. Cir. 2001) (“[W]hat a reference teaches is a

7 Polaris argues that the Board misconstrued this
passage. Polaris contends that the “disparate locations”
describes the “pages of memory” rather than the “resource
tags” for those pages. 19-1483 Appellant’s Reply Br. 12–13.
But that interpretation makes no sense in the context of
the entire passage, which is focused on the resource tags—
that they may “require a large amount of cache memory”
and may be slow to retrieve because they “may be located
in disparate locations.” ’505 patent col. 10 ll. 39–47.
8 U.S. Patent No. 6,253,297.
9 U.S. Patent No. 5,784,582.
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POLARIS INNOVATIONS LIMITED v. BRENT 25

question of fact.”); Fleming v. Cirrus Design Corp., 28 F.4th
1214, 1221 (Fed. Cir. 2022) (“We review the Board’s . . . fac-
tual findings for substantial evidence.”).
The Board found that each of Chauvel and Hughes dis-
closes storing the current state of a shared resource and
the requested state of a shared resource and comparing
those values. ’505 Decision, 2018 WL 6380663, at *12–13,
*24–26. The Board found that the current state and the
requested state are values “of the same type” such that, un-
der Dr. Przybylski’s definition of a “single buffer,” Chauvel
and Hughes disclose a logical single buffer even if storage
is physically separate. Id. at *12 (“Although Chauvel de-
picts the identified storage areas in different parts of the
traffic controller 18, we find that they comprise ‘a resource
tag buffer’ as claimed,” and finding that “Chauvel describes
such ‘logical unity’” under Dr. Przybylski’s definition), *12–
13 (describing the comparison of the values), *24 (“Alt-
hough Figure 3 of Hughes depicts the identified storage ar-
eas separately in arbiter/controller logic 72, we find that
they comprise ‘a resource tag buffer’ as claimed.”), *25
(“Hughes describes such ‘logical unity’” under Dr. Przybyl-
ski’s definition), *25–26 (describing the comparison of the
values).
These findings are supported by substantial evidence.
The Board reasonably relied on the references’ disclosure
of comparing the current state and requested state values
to determine they are of the same type. In addition, the
Board reasonably found that Hughes and Chauvel disclose
a “single buffer” based on the “logical unity” definition sup-
plied by Polaris’s expert.
On appeal, Polaris distills its argument as follows:
“The resolution of this case is a[s] simple as comparing the
pertinent block diagrams of the ’505 Patent (Figures 1B
and 1D), on the one hand, and Chauvel and Hughes, on the
other hand. . . . [T]he ’505 Patent has one block where
Chauvel and Hughes have multiple blocks.” 19-1483
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26 POLARIS INNOVATIONS LIMITED v. BRENT

Appellant’s Reply Br. 8. The problem with this argument
is that it is not responsive to the Board’s application of Po-
laris’s expert’s definition of a “single buffer” based on “log-
ical unity.” According to Dr. Przybylski, one must consider
whether the locations “stor[e] one or more values of the
same type” and have “a commonality of purpose or usage.”
19-1483 J.A. 1223 (Przybylski Decl. ¶ 38). That is precisely
the inquiry that the Board undertook here. Thus, we reject
Polaris’s argument on appeal that the blocks illustrated in
the figures of the prior art are dispositive.
Polaris also faults the Board for focusing on its expert’s
definition of logical unity rather than focusing on the rest
of his explanation as to why the prior art does not show a
single buffer. 19-1483 Appellant’s Br. 68–69 (citing
19-1483 J.A. 1239–43 (Przybylski Decl. ¶¶ 67–73)), 72–73
(citing 19-1483 J.A. 1244–45 (Przybylski Decl. ¶ 76)). The
portions of Dr. Przybylski’s testimony identified by Polaris,
however, largely rely on physical distinctness of structures,
and thus are irrelevant to the “logical unity” definition ap-
plied by the Board. See, e.g., 19-1483 J.A. 1241–42
(Przybylski Decl. ¶ 70) (“Chauvel acknowledges that the
memory controller 18a can be on a totally separate inte-
grated circuit”). Furthermore, those portions of the ex-
pert’s report merely speculate, without support, that the
information is stored in a “unique format” or the infor-
mation is “probably in different formats.” 19-1483
J.A. 1239–40 (Przybylski Decl. ¶ 69), 1244–45 (Przybylski
Decl. ¶ 76). This unsupported speculation is insufficient to
overcome the Board’s contrary finding based on the refer-
ences themselves.
Because substantial evidence supports the Board’s
finding that the prior art discloses a “resource tag buffer,”
we affirm.
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POLARIS INNOVATIONS LIMITED v. BRENT 27

CONCLUSION
For the reasons above, we affirm the Board’s denial of
Polaris’s motions to terminate and its unpatentability de-
terminations regarding the ’505 and ’993 patents. 10
AFFIRMED

10 Polaris also argues that we should disregard the
Office’s responses on the merits in these appeals because
the Office lacks Article III standing to defend the Board’s
decisions as an appellee. 19-1483 Reply Br. 1–3; 19-1484
Reply Br. 1–3. Polaris’s supplemental briefing regarding
its joint motion to terminate, however, admits that our
precedent “forecloses this argument.” 19-1484 Suppl. Re-
ply Br. 8 (citing Knowles Elecs. LLC v. Iancu, 886 F.3d
1369, 1372 n.2 (Fed. Cir. 2018)).