Redstone Logics v. MediaTek: Patent Infringement Case Closed After 497 Days
Redstone Logics LLC asserted US8549339B2 — a patent covering processor power management architecture — against MediaTek’s ARMv8.2 and ARMv9 chip families in the Western District of Texas. After 497 days of litigation, the parties resolved their dispute, with plaintiff’s claims dismissed with prejudice and each side bearing its own costs.
Settlement signals resolution of ARM processor power-management IP dispute
On 26 January 2024, Redstone Logics LLC filed suit against MediaTek, Inc. in the Western District of Texas (Case No. 7:24-cv-00029), asserting infringement of US8549339B2. The patent, filed under application number US12/713220, relates to processor architecture — specifically power and clock management techniques relevant to modern multi-core ARM-based system-on-chip designs. The accused products are MediaTek’s ARMv8.2 and ARMv9/ARMv9.2 processor families and their successors, representing a broad swath of MediaTek’s mobile and embedded SoC portfolio.
The case closed on 6 June 2025 when the parties jointly announced a resolution to the court. The dismissal order reflects an asymmetric structure: Redstone Logics’ claims against MediaTek are dismissed with prejudice, meaning they cannot be re-filed, while MediaTek’s counterclaims and defenses are dismissed without prejudice, preserving MediaTek’s ability to reassert those positions. Each party is ordered to bear its own attorneys’ fees, costs, and expenses — a standard arrangement consistent with a negotiated settlement rather than a litigated outcome.
The 497-day duration suggests the parties engaged in meaningful pre-trial activity — potentially including claim construction briefing or licensing negotiations — before reaching resolution. The with-prejudice dismissal of Redstone Logics’ claims is the most commercially significant term: it forecloses any future assertion of this patent against MediaTek on the same accused products. The financial terms of any underlying settlement remain confidential and are not disclosed in the public record. Redstone Logics is represented by Russ August & Kabat LLP, a firm known for NPE patent litigation, which is consistent with the plaintiff’s profile as an assertion entity.
Filing to Case Dismissed in 497 days
497 days — above the W.D. Texas median for resolved patent infringement actions
Asymmetric dismissal: what the with-prejudice order means for both parties
With-prejudice dismissal bars Redstone from re-filing this claim
A dismissal with prejudice operates as a final adjudication on the merits under Fed. R. Civ. P. 41. Redstone Logics cannot reassert US8549339B2 against MediaTek for the accused ARMv8.2 and ARMv9 products in any future action. This is the most consequential term in the order and strongly suggests the resolution included a licensing or covenant-not-to-sue arrangement that made the with-prejudice bar acceptable to the plaintiff.
Claim permanently extinguishedRedstone surrenders future enforcement rights against MediaTek
By accepting a with-prejudice dismissal, Redstone Logics permanently relinquishes its ability to re-litigate these infringement claims against MediaTek. This outcome is typically accepted when the patent holder receives sufficient commercial consideration — likely a lump-sum payment or royalty arrangement — that justifies closing the litigation door. The patent US8549339B2 remains enforceable against third parties not party to this action.
Third-party exposure remainsMediaTek’s counterclaims preserved, no fee award obtained
MediaTek’s counterclaims and defenses — which may have included invalidity challenges — are dismissed without prejudice, meaning they remain available in future proceedings involving this patent if needed. MediaTek did not obtain a fee award under 35 U.S.C. § 285, which is consistent with a negotiated resolution rather than a court finding of exceptionality. The own-costs arrangement suggests neither side achieved a dominant litigation position.
Invalidity arguments preservedARM SoC vendors face continued exposure to processor architecture NPE claims
This resolution without a public merits ruling leaves US8549339B2’s validity and scope untested by the courts. Other ARM architecture licensees — particularly those deploying ARMv9 and successor cores in mobile, automotive, or IoT applications — remain potentially exposed to assertion of this patent. The case outcome suggests Redstone Logics may continue asserting the patent commercially, and the absence of an IPR filing on the public record leaves the patent’s claims intact.
Patent validity unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Redstone Logics, LLC | Company | Patent assertion entity — holder of US8549339B2 covering processor power managementSearch in Eureka ↗ |
| Defendant | Mediatek, Inc. | Company | MediaTek, Inc. — fabless semiconductor company producing ARMv8/v9 mobile and embedded SoCsSearch in Eureka ↗ |
| Plaintiff counsel | Christian W. Conkle | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Jonathan Ma | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Joshua Scheufler | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Marc A. Fenster | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Neil A. Rubin | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Qi (Peter) Tong | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Reza Mirzaie | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Russ August & Kabat LLP | Law Firm | Representing Redstone Logics, LLCSearch in Eureka ↗ |
| Defendant counsel | Benjamin L. Bernell | Attorney | Counsel for Mediatek, Inc.Search in Eureka ↗ |
| Defendant counsel | Brock S. Weber | Attorney | Counsel for Mediatek, Inc.Search in Eureka ↗ |
| Defendant counsel | Christopher Kao | Attorney | Counsel for Mediatek, Inc.Search in Eureka ↗ |
| Defendant law firm | Pillsbury Winthrop Shaw Pittman LLP | Law Firm | Representing Mediatek, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal order reflects a jointly negotiated resolution rather than a litigated verdict. The structural asymmetry is notable: Redstone Logics’ infringement claims are extinguished with prejudice — a permanent bar — while MediaTek’s counterclaims, which likely included invalidity and non-infringement defenses, survive without prejudice. The each-party-bears-own-costs provision indicates no court-determined prevailing party, which is the hallmark of a consensual settlement. The patent’s validity and claim scope were never adjudicated on the merits.
US8549339B2 — Processor clock and power management architecture
US8549339B2 was filed under application number US12/713220 and issued as a utility patent covering power and clock management techniques in processor architectures. The invention relates to controlling operational states — such as clock gating and power domain switching — in multi-core processor designs, a foundational capability in modern ARM-based SoCs used in mobile, embedded, and edge computing applications. The patent’s technical claims are directly relevant to how processors manage performance and energy efficiency across workload states.
In the context of ARMv8.2 and ARMv9/ARMv9.2 chipsets — which underpin a significant share of global smartphone, IoT, and automotive SoC production — a patent covering power state management architecture carries substantial commercial leverage. MediaTek’s accused product families are among the highest-volume ARM implementations globally, making this patent strategically significant for any entity seeking licensing revenue from the ARM ecosystem. The patent’s continued validity post-settlement means other SoC vendors designing on ARMv9 cores should assess their exposure to this claim family.
Should your ARMv9 SoC design be cleared against US8549339B2?
Any company developing, licensing, or commercialising ARM-based SoCs — particularly those implementing ARMv8.2, ARMv9, or successor architectures — should consider whether their power management and clock control implementations fall within the claim scope of US8549339B2. Given that Redstone Logics successfully settled with MediaTek without a validity ruling, the patent’s claims remain legally intact and potentially assertable against other vendors in the same product category.
PatSnap Eureka’s FTO Search Agent can map the claim language of US8549339B2 against your product’s processor architecture specifications, identify potentially blocking claims, and surface prior art that could support an invalidity argument or design-around strategy. Eureka also tracks continuation applications and related family members that may extend coverage beyond the issued claims — critical intelligence for any ARMv9 product roadmap assessment.
Run a freedom-to-operate analysis on US8549339B2 to assess your product’s exposure
Run FTO in Eureka →Similar processor architecture patent cases in W.D. Texas
Explore NPE-driven processor and SoC patent infringement actions filed in the Western District of Texas with comparable power management or ARM architecture claim profiles.
What this case signals for the ARM processor IP landscape
This settlement-in-dismissal pattern is increasingly common in NPE actions against semiconductor companies asserting power management IP.
With-prejudice dismissals signal confidential licensing, not litigated wins
When a patent assertion entity accepts a with-prejudice dismissal, it almost always reflects an agreed commercial resolution — typically a paid-up licence or lump-sum royalty. For competitors watching this case, the outcome does not indicate the patent is invalid or non-infringed; it means MediaTek resolved its exposure privately. US8549339B2 remains an active threat to other ARM SoC vendors.
W.D. Texas remains the dominant venue for processor architecture NPE suits
The Western District of Texas continues to attract high volumes of NPE patent filings targeting semiconductor companies. Russ August & Kabat — Redstone’s counsel — regularly files in this jurisdiction. Semiconductor companies with ARMv8 or ARMv9 products should monitor new filings in W.D. Texas as an early-warning signal for portfolio exposure to power management and processor architecture patents.
Redstone v Mediatek — key questions answered
The case was dismissed by court order on 6 June 2025. Redstone Logics’ infringement claims were dismissed with prejudice — permanently barring re-filing — while MediaTek’s counterclaims were dismissed without prejudice. Each party bears its own costs. The parties announced a resolution to the court, consistent with a private settlement.
Redstone Logics asserted US8549339B2, filed under application number US12/713220. The patent covers processor clock and power management architecture relevant to ARM-based multi-core SoC designs. The accused products were MediaTek’s ARMv8.2 and ARMv9/ARMv9.2 processor families and their successors.
A with-prejudice dismissal operates as a final adjudication on the merits under Fed. R. Civ. P. 41(a)(1)(B). Redstone Logics cannot re-file the same infringement claims against MediaTek for the accused product families. However, US8549339B2 remains enforceable against other parties not bound by this dismissal order.
The asymmetric dismissal structure — plaintiff’s claims with prejudice, defendant’s counterclaims without — is a common negotiated outcome in patent settlements. It suggests MediaTek retained the option to reassert invalidity or other defenses in future proceedings involving US8549339B2, potentially as a deterrent against further assertion by Redstone Logics against third parties or in different contexts.
Yes. Because the case resolved without a merits ruling on validity or infringement, US8549339B2’s claims were never invalidated or narrowed by a court. Other companies designing or selling ARMv8 or ARMv9-based products — including mobile chipmakers, automotive SoC vendors, and IoT device manufacturers — remain potentially exposed to assertion of this patent and should consider FTO analysis.
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