Samsung Electronics Co., Ltd. et al. v. Xifi Networks R&D Inc.

This Inter Partes Review (IPR) case, IPR2025-01208, was initiated by Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. against Xifi Networks R&D Inc. before the Patent Trial and Appeal Board (PTAB) of the United States Patent and Trademark Office (USPTO). Samsung Electronics Co., Ltd. is a global technology conglomerate headquartered in South Korea, widely known for its consumer electronics, mobile devices, and semiconductor manufacturing, while Samsung Electronics America, Inc. is its major subsidiary specializing in the North American market for similar products. Xifi Networks R&D Inc. is a wireless technology, product, and solutions company with R&D expertise, focusing on patented WiFi broadband solutions for public access and smart cities. Public records indicate that XiFi Networks R&D Inc. does not contend to practice the asserted claims, suggesting it operates as a Non-Practicing Entity (NPE) or Patent Assertion Entity (PAE).

The IPR targets U.S. Patent 11974143, which broadly concerns a method and system for efficiently processing and transmitting data over multiple wireless links, particularly through a "virtual MAC" layer that makes bandwidth allocation decisions transparently to higher software layers. This patent is part of a larger portfolio of eleven patents asserted by Xifi Networks R&D Inc. against Samsung in a co-pending district court infringement lawsuit, XiFi Networks R&D, Inc. v. Samsung Electronics Co., Ltd. et al, Civil Action No. 2:24-cv-01057, filed in the Eastern District of Texas. The accused products in the district court litigation are Samsung's electronic devices, including smartphones, TVs, laptops, tablets, and wearable devices, specifically those that implement multi-link Wi-Fi operations functionality aligned with Wi-Fi 7 standards; the Samsung Galaxy S24 Ultra smartphone is cited as a representative example.

The IPR, filed on July 3, 2025, has been instituted and is currently pending before the PTAB, with an institution date of December 23, 2025. This IPR is a significant component of Samsung's defense strategy against Xifi's patent infringement claims, aiming to challenge the validity of the asserted patent outside of the district court proceedings. The case is notable for its focus on Wi-Fi 7 standard technology, an emerging and critical area in wireless communications, and highlights the ongoing trend of NPEs asserting patent portfolios related to essential industry standards against major operating companies like Samsung. The linkage between the district court litigation and the PTAB IPR demonstrates a common two-pronged approach in complex patent disputes in the US.

Here's a chronological summary of the key legal developments and outcomes for the patent infringement litigation involving Xifi Networks R&D Inc. and Samsung, along with the parallel IPR proceedings.

I. Patent Infringement Litigation: XiFi Networks R&D, Inc. v. Samsung Electronics Co., Ltd. et al. (E.D. Tex., Case No. 2:24-cv-01057)

2024

• December 17, 2024 – Complaint Filed: XiFi Networks R&D, Inc. filed a patent infringement lawsuit against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. in the U.S. District Court for the Eastern District of Texas, Marshall Division (Case No. 2:24-cv-01057). The complaint alleged infringement of eleven U.S. patents, including US Patent No. 11,974,143, related to multi-link WiFi operations functionality in Samsung electronic devices such as smartphones, TVs, laptops, tablets, and wearable devices.

2025

• February 24, 2025 – Infringement Contentions: Pursuant to the court's order, XiFi Networks R&D, Inc. provided its Disclosure of Asserted Claims and Infringement Contentions. XiFi identified claims of multiple asserted patents, including claims 1, 5-10, 12-20, 25, and 30 of the '143 patent, that Samsung allegedly infringed.
• March 12, 2025 – Amended Infringement Contentions (if applicable): Another court order (Dkt. 14) relating to infringement contentions was issued, potentially leading to further disclosures by XiFi.
• July 03, 2025 – IPR Petition Filed: Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. filed an Inter Partes Review (IPR) petition, IPR2025-01208, challenging US Patent No. 11,974,143 at the Patent Trial and Appeal Board (PTAB) of the USPTO.

2026

• March 13, 2026 – Motion to Stay Denied: The District Court for the Eastern District of Texas issued a Memorandum Opinion and Order denying Samsung's motion to stay the patent infringement litigation pending the outcome of the IPR proceedings at the PTAB. This decision means the district court case continues to move forward while the IPR is pending.

II. Parallel PTAB IPR Proceeding: Samsung Electronics Co., Ltd. et al. v. Xifi Networks R&D Inc. (IPR2025-01208)

• July 03, 2025 – IPR Petition Filed: Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. filed IPR2025-01208 with the PTAB, challenging the patentability of US Patent No. 11,974,143 owned by Xifi Networks R&D Inc.
• Status: Instituted - Pending: The PTAB has instituted the IPR, meaning it has determined that there is a reasonable likelihood that at least one of the challenged claims is unpatentable, and the proceeding is currently ongoing. The denial of the stay in the parallel district court case (2:24-cv-01057) on March 13, 2026, indicates that the district court litigation will not await the IPR's final outcome before proceeding.

Current Posture:
The patent infringement litigation (2:24-cv-01057) in the Eastern District of Texas is active and moving forward, following the denial of Samsung's motion to stay. Meanwhile, the parallel IPR (IPR2025-01208) challenging US Patent No. 11,974,143 has been instituted and is pending before the PTAB. No trial, verdict, or final judgment has been reached in the district court case as of the current date.

The plaintiff, Samsung Electronics Co., Ltd. et al., is represented by both in-house counsel and external law firms in this IPR proceeding and related district court litigation.

In-house Counsel (Samsung Electronics America, Inc.):

• Phillip Lee - Principal Legal Counsel, Samsung Electronics US IP Center.
  • Role: In-house counsel.
  • Firm: Samsung Electronics US IP Center.
  • Note: Veteran litigator with experience in patent litigation, prosecution, and licensing, having appeared before federal district courts, the PTAB, the ITC, and the Federal Circuit. Manages a docket of patent cases with outside counsel.
• Matthew Bathon - Principal Legal Counsel, Samsung Electronics.
  • Role: In-house counsel.
  • Firm: Samsung Electronics.
  • Note: Focuses on coordinating Samsung's ITC and district court dockets and has prior experience as a partner at Steptoe LLP litigating Section 337 investigations before the ITC and IP disputes in district courts.
• Tim Jezek - Principal Legal Counsel, Samsung Electronics America.
  • Role: In-house counsel.
  • Firm: Samsung Electronics America.
  • Note: Focuses on IP litigation and related policy issues, with over two decades of litigation and intellectual property counseling experience in both in-house and law firm settings.

External Counsel:
The IPR proceeding (IPR2025-01208) specifically targets US patent 11974143. Samsung is also a defendant in a related district court case, Xifi Networks R&D, Inc. v. Samsung Electronics Co., Ltd. et al. (2:24-cv-01057) in the Eastern District of Texas, where patent 11974143 is also at issue. While the specific counsel for the IPR are not explicitly detailed in publicly available summaries, firms frequently handling Samsung's patent litigation, particularly in PTAB proceedings and related district court cases, include Fish & Richardson, WilmerHale, and Finnegan, Henderson, Farabow, Garrett & Dunner.

Based on general representation patterns for Samsung in significant patent litigation and PTAB actions, it is highly likely that one or more of these firms are representing Samsung in IPR2025-01208. Given the lack of specific attorney appearances for this particular IPR, general information about their relevant practices is provided:

• Fish & Richardson P.C.
  • Role: Counsel (likely lead or co-counsel).
  • Firm: Fish & Richardson P.C. (multiple offices, prominent in patent litigation across the US, including New York, NY).
  • Note: A top-ranked intellectual property law firm known for its success in high-stakes patent litigation across various venues, including district courts, the Federal Circuit, the International Trade Commission (ITC), and the Patent Trial and Appeal Board (PTAB). They handle more patent cases in district courts, the Federal Circuit, the ITC, and the PTAB than any other national firm. Karl Renner is noted as one of the nation's leading PTAB practitioners at the firm.
• Wilmer Cutler Pickering Hale and Dorr LLP (WilmerHale)
  • Role: Counsel (likely lead or co-counsel).
  • Firm: WilmerHale (multiple offices, prominent in patent litigation, e.g., Palo Alto, CA).
  • Note: Recognized as a top firm for patent litigation, with a strong track record in inter partes review and other post-grant proceedings before the PTAB. The firm often staffs cases with skilled litigators and lawyers with deep technical knowledge. Mark Selwyn, a partner in the Litigation/Controversy Department, focuses on intellectual property litigation for major technology companies and has represented clients in numerous patent and IP cases in federal courts and before the ITC.
• Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
  • Role: Counsel (likely lead or co-counsel).
  • Firm: Finnegan, Henderson, Farabow, Garrett & Dunner, LLP (multiple offices, global presence).
  • Note: One of the world's leading intellectual property law firms, with extensive experience in patent litigation before the PTAB, as well as district and federal courts. They are one of the busiest firms representing petitioners and patent owners in post-grant review proceedings.

Based on the available web search results, specific counsel of record for Xifi Networks R&D Inc. in IPR2025-01208 before the Patent Trial and Appeal Board (PTAB) cannot be definitively identified through public sources such as general web searches for PTAB dockets or associated news. PTAB proceedings require formal designation of counsel, typically through a Power of Attorney filing.

However, Xifi Networks R&D, Inc. is involved in a related patent infringement case in the U.S. District Court for the Eastern District of Texas, XiFi Networks R&D, Inc. v. Samsung Electronics Co., Ltd. et al, Case No. 2:24-cv-01057, where they are the plaintiff (patent owner). Attorneys representing Xifi Networks R&D, Inc. in that related district court case include:

• Andrea Leigh Fair (Counsel)

  • Firm: Miller Fair Henry PLLC
  • Location: Not specified in search results, but typically based on firm's main office.
  • Experience Note: Represents Xifi Networks R&D, Inc. as plaintiff in related patent infringement litigation.

• Aaron R Fahrenkrog (Counsel)

  • Firm: Robins Kaplan LLP
  • Location: Minneapolis, MN
  • Experience Note: Represents Xifi Networks R&D, Inc. as plaintiff in related patent infringement litigation.

• Logan James Drew (Counsel)

  • Firm: Robins Kaplan LLP
  • Location: Minneapolis, MN
  • Experience Note: Represents Xifi Networks R&D, Inc. as plaintiff in related patent infringement litigation.

• Nicole Olson (Counsel)

  • Firm: Robins Kaplan LLP
  • Location: Not specified in search results, but associated with Robins Kaplan LLP.
  • Experience Note: Represents Xifi Networks R&D, Inc. as plaintiff in related patent infringement litigation.

• Jessica Lee Gutierrez (Counsel)

  • Firm: Robins Kaplan LLP
  • Location: Not specified in search results, but associated with Robins Kaplan LLP.
  • Experience Note: Represents Xifi Networks R&D, Inc. as plaintiff in related patent infringement litigation.

Additionally, Garrett Parish, Matthew Woods, and Rebecca Bact appeared as attorneys for the plaintiff (XiFi Networks R&D, Inc.) at a Markman hearing in the district court case. Their specific firms were not detailed in the provided search snippet.

While these attorneys represent Xifi Networks R&D, Inc. in a closely related matter, without direct access to the PTAB's Electronic Filing System (E2E) or a specific Power of Attorney filing for IPR2025-01208, it is not possible to confirm if they are the designated counsel of record for this particular IPR. The information is not publicly available through general web searches.