Redstone Logics v. Samsung: Processor Architecture Patents Settled in 359 Days
Redstone Logics LLC filed suit in the Eastern District of Texas alleging Samsung Galaxy S23 and DynamIQ Shared Unit architecture infringed two processor design patents. The parties reached a confidential settlement after 359 days, with plaintiff’s claims dismissed with prejudice and defendants’ counterclaims dismissed without prejudice.
Processor IP clash: Redstone targets Samsung’s ARMv8-9 silicon in EDTX
On October 17, 2023, Redstone Logics LLC — a patent assertion entity holding processor architecture IP — filed a two-patent infringement action against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. in the Eastern District of Texas before Judge Rodney Gilstrap. The asserted patents, US9253925B1 and US8549339B2, cover multi-core processor power management and architecture techniques. Samsung’s Galaxy S23 and its DynamIQ Shared Unit architecture (spanning ARMv8.2, ARMv9, and ARMv9.2 implementations) were identified as the accused products.
The case resolved through a joint motion to dismiss filed by both parties, which the court granted on October 9, 2024. Plaintiff Redstone Logics’s claims against Samsung were dismissed with prejudice, permanently barring re-litigation of the same infringement claims. Samsung’s counterclaims against Redstone were dismissed without prejudice, preserving Samsung’s ability to revive those defenses or claims if circumstances warrant. Each party was ordered to bear its own legal costs, consistent with a negotiated resolution rather than an adjudicated outcome.
The 359-day resolution — from filing to dismissal — suggests the parties moved efficiently toward settlement without prolonged claim construction or summary judgment battles, which is notable given the technical complexity of modern processor architecture claims. The confidential financial terms of the settlement are not part of the public record. The asymmetric dismissal structure — with prejudice for plaintiff, without prejudice for defendants — is a standard settlement construct that signals Redstone received some form of consideration in exchange for permanently relinquishing its infringement claims.
Filing to Dismissed with Prejudice in 359 days
359 days — faster than the EDTX median for patent cases reaching trial
Settled with prejudice: what the joint dismissal means for both parties
Dismissal with prejudice ends Redstone’s claims permanently
A dismissal with prejudice under Rule 41 operates as a final adjudication on the merits. Redstone Logics cannot re-file these same infringement claims against Samsung based on US9253925B1 or US8549339B2. The joint nature of the motion and the settlement announcement confirm this was a negotiated outcome, not a unilateral capitulation. Samsung’s counterclaims were separately dismissed without prejudice — a deliberate asymmetry typical of licensing settlements.
Permanent bar on re-litigationRedstone likely extracted licensing value before closing the case
The with-prejudice dismissal structure strongly suggests Redstone received financial consideration — most commonly a lump-sum or royalty-bearing licence — in exchange for permanently extinguishing its infringement claims. The patents themselves remain in force and enforceable against other parties. Redstone retains the right to assert US9253925B1 and US8549339B2 against other processor or device manufacturers whose products may practise the claimed architectures.
Patents survive for future assertionSamsung clears infringement claims, keeps counterclaim options open
Samsung exits the litigation free of any infringement finding or injunction risk on the Galaxy S23 and DynamIQ platform. The without-prejudice dismissal of Samsung’s counterclaims — likely invalidity or non-infringement defences — means Samsung preserved tactical optionality: if Redstone were to assert the same patents against Samsung affiliates or customers, Samsung could revive those defences. No fee award suggests Samsung did not pursue an exceptional-case finding under 35 U.S.C. § 285.
No infringement finding; costs neutralDynamIQ and ARMv9 ecosystem faces ongoing processor IP assertion risk
This settlement does not resolve whether Samsung’s DynamIQ architecture or ARMv9.2 implementations actually infringe Redstone’s patents — it simply ends this dispute. Other OEMs shipping ARMv8/9-based devices using DynamIQ Shared Unit designs remain potential targets. The case signals that processor power management and heterogeneous multi-core architecture IP continues to attract active assertion in the Eastern District of Texas, and companies relying on Arm reference architectures should monitor the Redstone portfolio closely.
Arm ecosystem IP risk persistsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Redstone Logics, LLC | Company | Patent assertion entity — holder of US9253925B1 and US8549339B2, multi-core processor IPSearch in Eureka ↗ |
| Defendant | Samsung Electronics Co., Ltd. | Company | Global consumer electronics and semiconductor manufacturer; maker of Galaxy S23 smartphonesSearch in Eureka ↗ |
| Co-Defendant | Samsung Electronics America, Inc. | Company | Search 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 | Marc A. Fenster | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Neil Alan Rubin | Attorney | Counsel for Redstone Logics, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Qi 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 ↗ |
| Plaintiff law firm | Russ August & Kabat LLP (Los Angeles) | Law Firm | Representing Redstone Logics, LLCSearch in Eureka ↗ |
| Defendant counsel | Ali Mojibi Yazdi | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Brian Bieluch | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Jay I. Alexander | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Melissa Richards Smith | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Richard L. Rainey | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Covington & Burling LLP | Law Firm | Representing Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Covington & Burling, LLP (Washington DC) | Law Firm | Representing Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Gillam & Smith, LLP | Law Firm | Representing Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order reflects a purely procedural resolution: no claim construction, no infringement finding, and no validity ruling was issued. The deliberate asymmetry in dismissal terms — plaintiff’s claims extinguished with prejudice, defendants’ counterclaims preserved without prejudice — is a standard settlement architecture that limits Redstone’s future enforcement options against Samsung while keeping Samsung’s invalidity arguments available as a deterrent. The ‘own costs’ directive confirms neither side extracted a fee-shifting concession, consistent with an arms-length negotiated exit.
US9253925B1 & US8549339B2 — Multi-core processor architecture and power management
US9253925B1 (application no. US13/739995) and US8549339B2 (application no. US12/713220) cover foundational techniques in multi-core processor architecture — specifically how heterogeneous CPU clusters are organised and how power states are managed across cores. These patents sit at the intersection of processor microarchitecture and dynamic power management, two domains that are central to the performance-per-watt competition driving modern mobile and datacenter silicon design. The patents’ application dates suggest inventive priority predating the widespread commercial deployment of big.LITTLE and DynamIQ-class architectures.
The strategic significance of these patents derives from the breadth of the accused technology: Arm’s DynamIQ Shared Unit is a reference architecture deployed by Samsung, MediaTek, and other Arm licensees across billions of shipped devices. If the claimed techniques are foundational to how DynamIQ manages heterogeneous core clusters and power domains, the patent holder holds leverage over a substantial portion of the global smartphone and embedded processor market. The settlement with Samsung — without a validity ruling — leaves these patents fully intact and potentially attractive for assertion against other ARMv8/9 implementers.
Should your team run an FTO against US9253925B1 and US8549339B2?
Any organisation designing, manufacturing, or shipping products that incorporate Arm DynamIQ Shared Unit architecture — including ARMv8.2, ARMv9, or ARMv9.2 implementations — should treat these two patents as live FTO risks. This includes smartphone OEMs, SoC vendors, automotive chip designers, and IoT platform developers using heterogeneous multi-core clusters with dynamic power management. The Samsung settlement confirms Redstone is actively monetising this portfolio; no invalidity finding was obtained, and both patents remain in force.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map claim-level exposure against these patents in minutes. Upload your processor architecture specifications or DynamIQ-based SoC datasheets and Eureka will identify which independent claims present the highest overlap risk, surface relevant prior art for potential IPR petitions, and flag related Redstone portfolio patents that may not yet have been asserted. Proactive FTO analysis now is significantly cheaper than defending an EDTX infringement action later.
Run a freedom-to-operate analysis on US9253925B1 to assess your product’s exposure
Run FTO in Eureka →Similar processor architecture patent cases in the Eastern District of Texas
Explore comparable multi-core processor and power management IP assertions filed in the Eastern District of Texas before Judge Gilstrap and related semiconductor NPE actions.
What this case signals for the processor architecture IP landscape
A confidential settlement in under a year signals both parties found more value in resolution than in prolonged litigation over complex chip architecture claims.
EDTX remains the preferred venue for processor patent assertions
Judge Gilstrap’s docket continues to attract high-stakes semiconductor IP disputes. The Eastern District’s plaintiff-friendly scheduling orders and experienced patent bench make it a strategic choice for NPEs asserting foundational chip architecture patents. Companies shipping ARM-based SoCs should monitor new EDTX filings against their product lines proactively.
Asymmetric dismissal is a reliable settlement signal — read the docket structure
When plaintiff claims are dismissed with prejudice and defendant counterclaims without prejudice, the public record almost always reflects a paid settlement. IP teams tracking competitor licensing activity should treat this docket pattern as a financial resolution indicator, even when deal terms remain confidential. This is a consistent structural signal across EDTX patent cases.
Redstone v Samsung — key questions answered
Redstone Logics asserted two patents: US9253925B1 (application US13/739995) and US8549339B2 (application US12/713220). Both cover multi-core processor architecture and power management techniques. The accused products were Samsung’s Galaxy S23 smartphone and the DynamIQ Shared Unit architecture (ARMv8.2, ARMv9, and ARMv9.2 implementations).
The case was resolved through a confidential settlement. The parties filed a joint motion to dismiss, which Judge Gilstrap granted on October 9, 2024. Redstone’s infringement claims were dismissed with prejudice; Samsung’s counterclaims were dismissed without prejudice. Each party bore its own costs and attorneys’ fees. No infringement finding or validity ruling was issued.
A dismissal with prejudice permanently bars Redstone from re-filing the same infringement claims against Samsung based on US9253925B1 and US8549339B2. However, the patents themselves remain valid and enforceable. Redstone retains the right to assert these patents against other companies whose products may infringe the claimed processor architecture and power management techniques.
Samsung’s counterclaims — likely including invalidity and non-infringement defences — were dismissed without prejudice, meaning Samsung did not permanently waive those arguments. This is standard settlement architecture: it preserves Samsung’s ability to revive defences if Redstone were to assert the same patents against Samsung’s customers, affiliates, or in related proceedings. The asymmetric dismissal structure is a well-recognised signal of a paid licensing resolution.
The settlement has no direct legal effect on other manufacturers. No court ruling addressed whether DynamIQ architecture infringes or whether the patents are valid. Other OEMs, SoC vendors, and device makers using ARMv8.2, ARMv9, or ARMv9.2-based DynamIQ designs remain potential assertion targets. The settlement suggests Redstone’s portfolio has licensing value, and companies in the Arm ecosystem should conduct FTO analysis against both asserted patents.
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