Case: 23-148 Document: 30 Page: 1 Filed: 12/26/2023
NOTE: This order is nonprecedential.
United States Court of Appeals
for the Federal Circuit
______________________
In re: LG ELECTRONICS INC., LG ELECTRONICS
USA, INC.,
Petitioners
______________________
2023-148
______________________
On Petition for Writ of Mandamus to the United States
District Court for the Eastern District of Texas in No. 5:22-
cv-00113-RWS-JBB, Judge Robert Schroeder, III.
______________________
ON PETITION AND MOTION
______________________
Before REYNA, TARANTO, and HUGHES, Circuit Judges.
REYNA, Circuit Judge.
ORDER
In this patent infringement case, the United States
District Court for the Eastern District of Texas entered an
order denying LG Electronics Inc. and LG Electronics USA,
Inc. (collectively, “LGE”)’s motion to disqualify Mayer
Brown LLP (“Mayer Brown”) from representing Pantech
Corporation and Pantech Wireless LLC (collectively, “Pan-
tech”). LGE now petitions this court for a writ of manda-
mus directing the district court to vacate that order and
grant its motion. LGE also moves to stay the district court
Case: 23-148 Document: 30 Page: 2 Filed: 12/26/2023
2 IN RE: LG ELECTRONICS INC.
proceedings pending our disposition of its petition and for
oral argument. We now deny LGE’s petition and its mo-
tions.
BACKGROUND
In 2022, Pantech filed this infringement action assert-
ing seven patents related to smartphone and cellular com-
munications, including
U.S. Patent No. 7,283,839 (“the
’839 patent”), against LGE. Mayer Brown represents Pan-
tech in the litigation.
From 2012 until 2020, Mayer Brown represented LGE
against allegations that it infringed patents covering as-
pects of cellular standard technologies in five matters not
part of this 2022 Pantech suit. Like the parties, we will
refer to those five matters as: (1) the Arbitration matter;
(2) the Jenam matter; (3) the CCE matter; (4) the MTT
matter; and (5) the Core Wireless matter.
Of particular relevance here, as a condition for Mayer
Brown’s representation of LGE in the Jenam matter, LGE
“consent[ed] to [Mayer Brown’s] representation of other cli-
ents adverse to [LGE] in future matters substantially un-
related to the technology involved in” that and “other
matters where [Mayer Brown] represented LGE in the past
five (5) years” and agreed to “waive[] any conflict of interest
arising from such matters,” (the “Jenam agreement”)
Appx3 (emphasis omitted).
After Pantech commenced this suit, LGE moved to dis-
qualify Mayer Brown on the ground that its representation
of Pantech and prior representations of LGE violate the
Texas Disciplinary Rules of Professional Conduct and the
American Bar Association’s Model Rules of Professional
Case: 23-148 Document: 30 Page: 3 Filed: 12/26/2023
IN RE: LG ELECTRONICS INC. 3
Conduct 1.09. 1 In response, Pantech argued that LGE had
consented to Mayer Brown’s representation based on the
Jenam agreement and the prior matters were not substan-
tially related to the current suit.
On August 28, 2023, the district court, largely agreeing
with the analysis of the magistrate judge, entered an order
rejecting LGE’s request to categorically disqualify Mayer
Brown. The court first held that the Jenam agreement con-
stituted prior consent to the purported conflict arising from
the Jenam, CCE, and Arbitration matters and the current
suit. 2
As to the Core Wireless matter, the court agreed with
LGE that the matter was not subject to the Jenam agree-
ment because the technologies were substantially related;
the court nonetheless concluded that disqualification was
not warranted because “the record before the Court shows
that Mayer Brown and [its attorneys] did not work on or
advise LGE as to Core Wireless,” Appx21, and that no mem-
ber of Mayer Brown obtained any confidential information
of LGE as part of that representation, Appx20.
Lastly, while agreeing with LGE that disqualification
was warranted based on the MTT matter and Mayer
1 The Texas Rules of Professional Conduct, which
are followed by the Eastern District of Texas and, for our
purposes, are materially similar to the ABA Model Rules,
provide: “Without prior consent, a lawyer who personally
has formerly represented a client in a matter shall not
thereafter represent another person in a matter adverse to
the former client . . . if it is the same or a substantially
related matter.” Texas Rule 1.09(a); ABA Model Rule
1.09(a).
2 LGE does not press any argument with regard to
the Jenam matter in its petition.
Case: 23-148 Document: 30 Page: 4 Filed: 12/26/2023
4 IN RE: LG ELECTRONICS INC.
Brown’s representation of Pantech in an infringement suit
asserting the ’839 patent, the district court declined to dis-
qualify Mayer Brown from the entire litigation. Instead,
the court found it more appropriate to sever the ’839 patent
into a separate case from which Mayer Brown was disqual-
ified. LGE’s petition and motions follow. We have jurisdic-
tion pursuant to
28 U.S.C. §§ 1295(a)(1) and 1651(a).
DISCUSSION
To establish entitlement to the “extraordinary remedy”
of a writ of mandamus, a petitioner is required to show
that: (1) it has “no other adequate means to attain the relief
[it] desires;” (2) the right to the writ is “clear and indisput-
able;” and (3) “the writ is appropriate under the circum-
stances.” Cheney v. U.S. Dist. Ct. for D.C.,
542 U.S. 367,
380–81 (2004) (citations omitted). Our review of attorney
disqualification issues not unique to patent matters is gov-
erned by the law of the regional circuit. See Atasi Corp. v.
Seagate Tech.,
847 F.2d 826, 829 (Fed. Cir. 1988). Under
Fifth Circuit law, the disqualification decision is generally
committed to the sound discretion of the district court, see
Webb v. Town of Saint Joseph,
925 F.3d 209, 221 (5th Cir.
2019), and “[d]enial of a motion to disqualify counsel will
rarely justify the issuance of a writ of mandamus,” In re
Am. Airlines, Inc.,
972 F.2d 605, 608 (5th Cir. 1992) (brack-
ets in the original, collecting cases). We cannot say that
LGE has shown this to be one of those rare cases.
As to the CCE and Arbitration matters, LGE has not
shown a clear entitlement to disqualification based on its
arguments regarding burdens of proof. The district court
agreed with the magistrate judge that “Pantech ha[d] met
its burden of showing LGE gave informed consent for
Mayer Brown to represent other clients in future matters
adverse to LGE, subject to the limitations specifically ne-
gotiated,” Appx14, and that LGE ultimately failed to show
disqualification of Mayer Brown was appropriate based on
the court’s interpretation of the Jenam agreement and
Case: 23-148 Document: 30 Page: 5 Filed: 12/26/2023
IN RE: LG ELECTRONICS INC. 5
consideration of the factual record. LGE has not identified
any precedent inconsistent with those conclusions, which
is consistent with precedent placing the burden on the mo-
vant seeking disqualification. See In re Am. Airlines,
972
F.2d at 614 (noting “the party seeking disqualification
bears the burden of proving that the present and prior rep-
resentations are substantially related”). 3
As to the Core Wireless matter, we also see no manda-
mus-worthy error in the district court’s denial of disquali-
fication. LGE argues the district court’s determination
that the technologies involved in that prior matter are sub-
stantially related to the current litigation (such that the
Jenam agreement does not constitute prior consent) con-
clusively establishes an impermissible conflict-of-interest.
But we cannot say that it was a clear abuse of discretion
for the district court to have considered the limited nature
of that prior representation and determine, based on the
particular facts, that disqualification was not warranted.
See Am. Airlines, Inc.,
972 F.2d at 614 (noting that the test
for disqualification requires “painstaking analysis of the
facts and precise application of precedent” relative to “the
subject matters, issues and causes of action” (cleaned up)).
3 LGE relies on In re Dresser Industries, Inc.,
972
F.2d 540, 545 (5th Cir. 1992), but that decision simply
noted the disqualified attorney had identified no excep-
tional circumstance that would excuse the conflict from ad-
verse concurrent representation. LGE’s reliance on non-
binding district court cases requiring the disqualified at-
torney to make a showing of informed consent, see, e.g.,
Galderma Lab’ys, L.P. v. Actavis Mid Atl. LLC,
927 F.
Supp. 2d 390, 398 (N.D. Tex. 2013); Celgene Corp. v. KV
Pharm. Co., No. 07-4819,
2008 WL 2937415, at *6 (D.N.J.
July 29, 2008), also do not establish a clear and indisputa-
ble right to relief under governing precedent.
Case: 23-148 Document: 30 Page: 6 Filed: 12/26/2023
6 IN RE: LG ELECTRONICS INC.
Lastly, as to the MTT matter, we see no clear and in-
disputable error in the district court’s remedy. A district
court generally has “wide discretion in framing its sanc-
tions to be just and fair to all parties involved.” United
States v. Miller,
624 F.2d 1198, 1201 (3d Cir. 1980) (citation
omitted); see also FDIC v. U.S. Fire Ins. Co.,
50 F.3d 1304,
1313–14 (5th Cir. 1995) (noting that “[d]epriving a party of
the right to be represented by the attorney of his or her
choice is a penalty that must not be imposed without care-
ful consideration”). And the district court’s chosen remedy
of severing the ’839 patent and disqualifying Mayer Brown
solely from representation in that separate action reasona-
bly follows from the fact that Mayer Brown’s representa-
tion as to the other asserted patents was either covered by
LGE’s prior consent or did not raise a conflict of interest.
LGE cites nothing in the rules or governing authorities
that clearly and indisputably demonstrates that the dis-
trict court here exceeded its considerable discretion.
Accordingly,
IT IS ORDERED THAT:
The petition and motions are denied.
FOR THE COURT
December 26, 2023
Date
