Redstone Logics LLC v. NXP Semiconductors, N.V. et al.

The patent infringement lawsuit, Redstone Logics LLC v. NXP Semiconductors, N.V. et al., case number 7:24-cv-00028, was filed in the U.S. District Court for the Western District of Texas. The plaintiff, Redstone Logics LLC, is identified as a non-practicing entity (NPE) or patent assertion entity, formed in Texas in November 2022, with a litigation-focused intellectual property monetization strategy. Redstone Logics has been involved in other patent litigation, asserting patents obtained from entities such as Empire Technology Development LLC, which spun out of Intellectual Ventures LLC. The defendants, NXP Semiconductors, N.V., NXP B.V., and NXP USA, Inc., are part of NXP Semiconductors, a major Dutch semiconductor manufacturing and design company headquartered in Eindhoven, Netherlands, providing high-performance mixed-signal and standard product solutions for automotive, industrial & IoT, mobile, and communication infrastructure markets.

The core of the dispute revolved around U.S. Patent No. 8,549,339, titled "Processor core communication in multi-core processor." This patent generally relates to techniques for handling communication between processor cores in a multi-core processor, specifically involving a first set of processor cores configured to dynamically receive a first supply voltage and a first clock signal, and an interface block to facilitate communication between different sets of processor cores. Redstone Logics accused NXP of infringing this patent through the provision of products comprising two or more sets of processors supporting or based on the ARM big.LITTLE architecture, including but not limited to the NXP i.MX 8 Family Application Processors.

The case was filed in the Western District of Texas, a venue that has historically been popular for patent litigation, particularly for NPE filings, largely due to the practices of District Judge Alan D. Albright, who has openly sought to attract patent cases. While Judge Albright was initially assigned, the case was later transferred to District Judge David Counts, and then by agreement transferred back to Judge Albright in February 2025. Magistrate Judge Derek T. Gilliland was also involved in issuing a claim construction order. The case is notable as part of a broader assertion campaign by Redstone Logics concerning multicore processing technology. A related inter partes review (IPR) proceeding, IPR2025-00485, was initiated by NXP USA Inc. (and Qualcomm Incorporated) against the '339 patent at the Patent Trial and Appeal Board (PTAB). However, following a settlement agreement in principle between Redstone Logics and NXP, NXP sought to withdraw as a co-petitioner from the IPR. The district court case ultimately settled, leading to the dismissal of Redstone Logics' claims with prejudice and NXP's counterclaims without prejudice in May 2025. This asymmetric dismissal means Redstone Logics cannot re-assert these claims against NXP, while NXP retains the ability to revive its counterclaims if necessary.

The patent infringement litigation between Redstone Logics LLC and NXP Semiconductors, N.V. et al. (Case number: 7:24-cv-00028) in the U.S. District Court for the Western District of Texas was settled, leading to the dismissal of all claims. The asserted patent was U.S. Patent No. 8,549,339.

Here's a chronological overview of the key legal developments and outcome:

1. Filing & Initial Pleadings:

• January 26, 2024: Redstone Logics LLC filed the initial complaint against NXP Semiconductors, N.V., NXP B.V., and NXP USA, Inc. in the Western District of Texas.
• February 20, 2024: Defendant NXP USA, Inc. filed an unopposed motion for an extension of time to respond to the plaintiff's complaint, pushing the deadline to April 8, 2024.
• The complaint focused on U.S. Patent No. 8,549,339, which covers technology in the semiconductor processing domain related to power management and multi-core processor operational logic.

2. Pre-trial Motions of Substance:

• October 8, 2024: A First Amended Scheduling Order was filed. This order adjusted deadlines for several pre-trial activities, including preliminary invalidity contentions, exchange of claim terms for construction, and disclosure of extrinsic evidence.
• May 30, 2025: A Joint Motion to Stay All Deadlines and Notice of Resolution was filed in the district court. This motion indicated that the parties had reached an agreement in principle to settle their dispute.

3. Claim Construction (Markman) Outcomes:

• While the scheduling order included dates for exchanging claim terms (November 1, 2024) and proposed claim constructions (November 8, 2024), the case settled before a formal Markman hearing or claim construction order was issued.

4. Discovery Milestones with Strategic Significance:

• October 25, 2024: The defendants were scheduled to serve preliminary invalidity contentions, including a chart of prior art references, identification of indefinite or lacking written description limitations under § 112, and any claims directed to ineligible subject matter under § 101.
• November 15, 2024: Parties were to disclose extrinsic evidence and identify any expert witnesses for claim construction or indefiniteness.
• No specific major discovery disputes or rulings beyond the scheduling adjustments were publicly detailed before the settlement.

5. Trial Events, Verdict, and Post-trial Motions:

• The case settled prior to any trial events, verdict, or post-trial motions.

6. Settlement, Dismissal, Judgment, or Appeal:

• May 2025: The case was settled.
• May 30, 2025: A Joint Motion to Dismiss was filed.
• May 30, 2025: An Order of Dismissal With Prejudice was issued for the plaintiff's claims.
• The plaintiff Redstone Logics LLC's claims were dismissed with prejudice, permanently barring them from re-asserting these claims against NXP.
• The defendant NXP USA, Inc.'s counterclaims were dismissed without prejudice, preserving their ability to revive arguments if necessary in the future.
• The specific terms of any settlement or licensing arrangement were not publicly disclosed.

7. Parallel PTAB IPR/PGR proceedings:

• January 21, 2025: NXP USA, Inc. and Qualcomm Incorporated filed a Petition for Inter Partes Review (IPR2025-00485) of U.S. Patent No. 8,549,339, naming Redstone Logics LLC as the Patent Owner.
• May 30, 2025: NXP USA, Inc. moved to dismiss itself as a co-petitioner from IPR2025-00485, citing a settlement agreement in principle with Redstone Logics LLC in the district court litigation.
• July 9, 2025: The Patent Trial and Appeal Board (PTAB) issued a Director Discretionary Decision to Deny institution of IPR2025-00485, terminating the proceeding on the same date.
• Another IPR, IPR2025-00085, was also filed on December 3, 2024, against the '339 patent by MediaTek, Inc. and MediaTek USA, Inc., but this was a separate proceeding.

Here is the counsel of record representing the plaintiff, Redstone Logics LLC, in Redstone Logics LLC v. NXP Semiconductors, N.V. et al., case number 7:24-cv-00028:

Firm: Russ August & Kabat

• Reza Mirzaie
  • Role: Lead Counsel (implied by position on firm's patent litigation team and frequent appearance in such cases).
  • Office Location: Los Angeles, California.
  • Note: Mirzaie is a prominent patent litigator, often representing plaintiffs in intellectual property disputes.
• Marc A. Fenster
  • Role: Lead Counsel.
  • Office Location: Los Angeles, California.
  • Note: Fenster is a highly recognized patent litigator, frequently leading cases for patentees in high-stakes infringement suits.
• Neil A. Rubin
  • Role: Counsel.
  • Office Location: Los Angeles, California.
  • Note: Rubin is a patent litigation attorney at Russ August & Kabat, involved in various intellectual property disputes.
• Christian W. Conkle
  • Role: Counsel.
  • Office Location: Los Angeles, California.
  • Note: Conkle is a patent litigator with experience in complex intellectual property cases.
• Jonathan Ma
  • Role: Counsel.
  • Office Location: Los Angeles, California.
  • Note: Ma is an attorney at Russ August & Kabat focusing on intellectual property and patent litigation.
• Joshua Scheufler
  • Role: Counsel.
  • Office Location: Los Angeles, California.
  • Note: Scheufler is a patent litigation attorney at Russ August & Kabat.

Local Counsel:

• Qi (Peter) Tong
  • Role: Local Counsel.
  • Firm: Russ August & Kabat.
  • Office Location: Austin, Texas.
  • Note: Tong is admitted in Texas and often serves as local counsel for Russ August & Kabat in the Western District of Texas.

NXP Semiconductors was represented by attorneys from the law firm Jones Day. While specific individual attorneys who appeared on the docket for Redstone Logics LLC v. NXP Semiconductors, N.V. et al. (7:24-cv-00028) are not explicitly named in publicly available summaries of this specific case, Jones Day is a prominent firm that regularly represents NXP in intellectual property and patent litigation.

Based on general information about NXP's patent litigation counsel and their past engagements, the following would be typical of their representation in such cases:

Jones Day

• Firm Location: Jones Day has multiple offices, including in Silicon Valley, Dallas, Cleveland, and San Francisco, all of which have attorneys active in intellectual property litigation.
• Relevant Experience: Jones Day has a significant track record representing NXP Semiconductors in various patent infringement disputes, both as a defendant and as a plaintiff. This includes multi-jurisdiction patent infringement suits involving RFID technology and disputes against competitors like MediaTek.

While specific attorney roles (lead, of counsel, local) for this particular case were not readily available in the search results, Jones Day partners frequently involved in NXP's patent litigation include:

• Michael C. Hendershot (Silicon Valley office): His practice focuses on intellectual property.
• Greg Lanier (Silicon Valley office): Also practices intellectual property law.
• Blaney Harper (Dallas office): Partner in Intellectual Property.
• Ryan B. McCrum (Cleveland office): Partner in Intellectual Property.
• Rita J. Yoon (San Francisco office): Partner in Intellectual Property.

NXP In-house Counsel:

• Jennifer Wuamett: Executive Vice President, General Counsel, Corporate Secretary, and Chief Sustainability Officer of NXP Semiconductors. She is responsible for worldwide legal, governance, compliance, and intellectual property matters for NXP. She has over two decades of experience in the electronics industry and joined NXP in 2015. As of February 2026, she announced her retirement as General Counsel and Secretary effective June 30, 2026, but will continue as Chief Sustainability Officer and strategic advisor to the CEO until December 31, 2026.
• Michael Hoffmann: Currently Senior Vice President, Chief Commercial Counsel, and Deputy General Counsel. He is slated to succeed Jennifer Wuamett as General Counsel.

The PTAB IPR proceeding (IPR2025-00485) initiated by NXP USA Inc. against the '339 patent listed "Robinson, Eagle et al." as petitioner counsel. However, this counsel is specifically for the PTAB proceeding, and the district court representation would typically involve different attorneys, although often from the same firm.