Future Link Systems, LLC v. Realtek Semiconductor Corporation

CourtDistrict Court, W.D. Texas
DecidedSeptember 9, 2025
Docket6:21-cv-00363
StatusUnknown

This text of Future Link Systems, LLC v. Realtek Semiconductor Corporation (Future Link Systems, LLC v. Realtek Semiconductor Corporation) is published on Counsel Stack Legal Research, covering District Court, W.D. Texas primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Future Link Systems, LLC v. Realtek Semiconductor Corporation, (W.D. Tex. 2025).

Opinion

United States Court of Appeals for the Federal Circuit ______________________

FUTURE LINK SYSTEMS, LLC, Plaintiff-Appellee

v.

REALTEK SEMICONDUCTOR CORPORATION, Defendant-Appellant ______________________

2023-1056, 2023-1057 ______________________

Appeals from the United States District Court for the Western District of Texas in Nos. 6:21-cv-00363-ADA-DTG, 6:21-cv-01353-ADA, Judge Alan D. Albright. ______________________

Decided: September 9, 2025 ______________________

BRIAN DAVID LEDAHL, Russ August & Kabat, Los Ange- les, CA, argued for plaintiff-appellee. Also represented by REZA MIRZAIE, ANDREW D. WEISS.

MICHAEL MURRAY, Paul Hastings LLP, Washington, DC, argued for defendant-appellant. Also represented by RUDOLPH KIM, Palo Alto, CA. ______________________

Before REYNA, BRYSON, and STOLL, Circuit Judges. STOLL, Circuit Judge. 2 FUTURE LINK SYSTEMS, LLC v. REALTEK SEMICONDUCTOR CORPORATION Realtek Semiconductor Corp. (“Realtek”) appeals the district court’s denial of (1) its motions for fees, costs, and sanctions; and (2) its discovery requests related to confi- dentiality. We hold that the district court erred in its de- nial of fees under 35 U.S.C. § 285 and costs under Federal Rule of Civil Procedure 54(d)(1) because, contrary to the district court’s decision, Realtek is a prevailing party. We also hold that the district court did not err in its denial of Rule 11 sanctions and fees under 28 U.S.C. § 1927. Fi- nally, with the understanding that most of Realtek’s dis- covery requests are now irrelevant, we hold that the district court did not err in denying the sole discovery re- quest that remains relevant on appeal. Accordingly, for the reasons that follow, we vacate-in-part, affirm-in-part, and remand. BACKGROUND Patent owner Future Link Systems, LLC (“Future Link”) initiated two (now-dismissed) patent infringement suits in the U.S. District Court for the Western District of Texas against Realtek, a global supplier of integrated cir- cuits: (1) Case No. 6:21-cv-363 (the “363 case”) involving U.S. Patent No. 7,917,680; and (2) Case No. 6:21-cv-1353 (the “1353 case”) involving U.S. Patent Nos. 8,099,614 and 7,685,439. The ’680 patent “relates to improvements in electronic circuitry in computing devices and proces- sors.” J.A. 231; see U.S. Patent No. 7,917,680. The ’614 and ’439 patents “generally relate to integrated cir- cuits and power-saving features.” J.A. 4032; see U.S. Pa- tent No. 8,099,614; U.S. Patent No. 7,685,439. In July 2021, Future Link filed its operative complaint in the 363 case. Realtek’s accused products included “prod- ucts that use processors supporting ARM AMBA AXI4 or newer and/or ARM AMBA CHI,” e.g., Realtek’s “RTD1295, RTD1296, RTD1395, RTD1315, RTD1319, and RTD1619” chips. J.A. 239. As the district court explained, Future Link alleged that Realtek’s “products infringe at least FUTURE LINK SYSTEMS, LLC v. 3 REALTEK SEMICONDUCTOR CORPORATION Claim 1 of the ’680 Patent because the accused products in- clude a Quality-of-Service (‘QoS’) feature implemented in the AXI4 bus protocol specification.” J.A. 2. Two weeks after Future Link filed its operative complaint, Realtek sought dismissal for improper service and lack of personal jurisdiction. A few months later, in November 2021, Real- tek moved for Rule 11 sanctions. The following month, in December 2021, Future Link filed its operative complaint in the 1353 case, asserting the ’614 and ’439 patents and naming Realtek’s RTD1395 chip as a representative accused product. Realtek moved to dis- miss that case based on improper service, failure to state a claim, and lack of personal jurisdiction. In March 2022, Future Link produced a licensing agreement it had entered in 2019 with MediaTek, Inc., which is not a party to this litigation. MediaTek and Real- tek compete in the semiconductor industry. That agree- ment provided that MediaTek would pay Future Link a lump sum amount if Future Link filed a lawsuit against Realtek. On March 31, 2022, Future Link entered a sepa- rate licensing agreement that covers accused Realtek prod- ucts. Days later, in April 2022, Future Link voluntarily dismissed both cases without prejudice. Realtek then filed motions asserting that Future Link had filed objectively baseless suits and requesting attorneys’ fees and costs in both cases. In September 2022, the district court issued a sealed omnibus order and memorandum opinion in both cases re- garding fees, costs, and sanctions. This district court opin- ion contains the first of two sets of decisions at issue in this appeal. The district court denied: (1) Realtek’s motion for attorneys’ fees as sanctions under Rule 11 in the 363 case; (2) Realtek’s motion for attorneys’ fees under 35 U.S.C. § 285 in the 363 case; and (3) Realtek’s motion for attor- neys’ fees and costs under 28 U.S.C. § 1927 in both cases. The court did not, however, address Realtek’s request in 4 FUTURE LINK SYSTEMS, LLC v. REALTEK SEMICONDUCTOR CORPORATION the 363 case for costs under Rule 54(d)(1). The district court then granted-in-part Realtek’s motions for sanctions under the court’s inherent power by ordering that the vol- untary dismissals by Future Link be modified to become dismissals with prejudice in both cases. The following month, in October 2022, the district court held a discovery hearing and issued a corresponding dis- covery order in both cases. This order contains the second set of decisions at issue in this appeal. Realtek had: (1) ar- gued that Future Link’s redactions to the district court’s sealed omnibus order were excessive, improper, and vio- lated public policy; (2) sought limited relief from the “Out- side Attorneys’ Eyes Only” designation on portions of the MediaTek license agreement; and (3) sought limited relief from the protective order to show outside counsel for Real- tek, who are not counsel of record, certain materials pro- duced in discovery. The district court denied Realtek’s requests. Realtek appeals. We have jurisdiction under 28 U.S.C. § 1295(a)(1). DISCUSSION We begin by addressing whether the district court erred in denying fees under 35 U.S.C. § 285 and failing to address Realtek’s request for costs under Rule 54(d)(1) in the 363 case. We then evaluate whether the court erred in denying Rule 11 sanctions in the 363 case. After that, we address whether the court erred in denying fees under 28 U.S.C. § 1927 in both cases. Finally, we evaluate whether the district court erred in denying the sole discov- ery request that remains relevant on appeal. I Section 285 provides that “[t]he court in exceptional cases may award reasonable attorney fees to the prevailing party.” 35 U.S.C. § 285 (emphasis added). Rule 54(d)(1) provides that, “[u]nless a federal statute, [the Federal FUTURE LINK SYSTEMS, LLC v. 5 REALTEK SEMICONDUCTOR CORPORATION Rules of Civil Procedure], or a court order provides other- wise, costs—other than attorney’s fees—should be allowed to the prevailing party.” Fed. R. Civ. P.

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