NL Giken Inc. v. VIZIO, Inc. et al.

Case Overview and Background

NL Giken Inc. v. VIZIO, Inc. et al.
Case No. 1:24-cv-00028, U.S. District Court for the District of Delaware

This patent infringement lawsuit was initiated by NL Giken Inc., a Japanese entity described as being controlled by its inventor and formed to develop and license his inventions. This structure suggests it may operate as a non-practicing entity (NPE) or patent assertion entity (PAE), a classification for entities that enforce patents rather than create products. The defendants are major players in the consumer electronics and e-commerce space: VIZIO, Inc., a well-known manufacturer of smart TVs and soundbars, and Amazon.com, Inc. with its subsidiary Amazon.com Services LLC, a global leader in online retail and cloud computing. The case centers on allegations that the defendants' popular multimedia systems infringe on NL Giken's patented technology.

The technology at the heart of the dispute is U.S. Patent No. 10,880,592, which generally covers a "digital contents receiving apparatus" capable of both receiving live programming and downloading content from the internet. The complaint targets VIZIO's SmartCast TVs and the integration of Amazon's Fire TV platform and services within those devices, which allegedly utilize the patented method for managing and presenting multimedia content. This includes features related to streaming media and content sharing. The lawsuit is part of NL Giken's first litigation campaign, which also includes a similar suit against Apple in the same court.

The case is proceeding in the U.S. District Court for the District of Delaware, a highly popular and influential venue for patent litigation due to its judges' expertise in patent law and the high number of U.S. corporations incorporated there. Following the Supreme Court's 2017 TC Heartland decision, which restricted patent venue to a defendant's state of incorporation, Delaware's prominence in this area grew substantially. The case is notable as it represents a new patent assertion campaign by an inventor-controlled entity against major technology companies. Its significance is amplified by parallel validity challenges at the U.S. Patent and Trademark Office. On April 22, 2026, the USPTO granted a request for ex parte reexamination of the '592 patent, finding "substantial new questions of patentability" for several claims, which could significantly impact the district court litigation. A prior Inter Partes Review (IPR) proceeding against the same patent, initiated by Amazon and its subsidiary Twitch, was terminated due to a settlement.

Legal Developments and Case Status

As of May 2026, NL Giken Inc. v. VIZIO, Inc. et al. remains an active case, but its trajectory has been significantly influenced by parallel validity challenges against the asserted patent, U.S. Patent No. 10,880,592.

Chronological Developments:

• 2024-01-09: Complaint Filed. NL Giken Inc. filed a patent infringement complaint against VIZIO, Inc., Amazon.com, Inc., and Amazon.com Services LLC in the District of Delaware. The complaint alleges that VIZIO's SmartCast-enabled televisions, which incorporate Amazon's Fire TV platform and streaming services, infringe the '592 patent. NL Giken sought monetary damages and an injunction.

• 2024-11-25: Defendants Petition for Inter Partes Review (IPR). Amazon and its subsidiary Twitch Interactive, Inc. filed a petition with the Patent Trial and Appeal Board (PTAB) for an inter partes review of the '592 patent (IPR2025-00194). This PTAB proceeding directly challenged the validity of the patent being asserted in the district court litigation.

• 2025-04-11: Motion to Stay Pending IPR. In the district court case, the defendants filed a motion to stay the litigation pending the outcome of their IPR petition. This is a common strategy for defendants, as a PTAB decision invalidating the patent would effectively end the district court case. The outcome of this motion is not yet clear from available records.

• 2025-05-23: PTAB Institutes IPR. The PTAB issued a decision to institute the inter partes review for claims 1–3 and 5 of the '592 patent, finding a "reasonable likelihood" that the petitioner (Amazon/Twitch) would prevail in showing the claims were unpatentable. The PTAB declined to review other claims that NL Giken had disclaimed.

• 2025-06-10: IPR Terminated Due to Settlement. The IPR proceeding (IPR2025-00194) was terminated by the PTAB following a settlement between the parties. The details of the settlement have not been publicly disclosed, but this development resolved the specific validity challenge brought by Amazon and Twitch. It is not specified if this settlement also resolved the district court litigation for the Amazon defendants.

• 2026-03-06: Ex Parte Reexamination Requested by Third Party. Unified Patents, a firm that challenges patents often asserted by non-practicing entities, filed a request for ex parte reexamination of the '592 patent. This introduced a new, parallel validity challenge at the U.S. Patent and Trademark Office (USPTO).

• 2026-04-22: USPTO Grants Ex Parte Reexamination. The USPTO's Central Reexamination Unit (CRU) granted the request, finding "substantial new questions of patentability" for claims 1-3 and 5 of the '592 patent. This reexamination proceeding is ongoing and could result in the claims being amended or canceled, which would have a significant impact on the district court case against VIZIO.

Current Posture and Outlook:

The litigation is currently active but overshadowed by the ongoing ex parte reexamination. The defendants, particularly VIZIO, will likely leverage the reexamination to argue for a continued stay of the district court proceedings. The finding of "substantial new questions of patentability" by the USPTO lends significant weight to the argument that litigating the case would be inefficient until the patent's validity is clarified.

No significant rulings on pre-trial motions, such as motions to dismiss or for summary judgment, have been reported, nor has the case reached the claim construction (Markman hearing) stage. The early focus has been on the parallel PTAB and USPTO validity challenges. The settlement that terminated the Amazon-led IPR may have resolved the dispute with the Amazon defendants, but VIZIO remains an active defendant. The case's future now largely depends on the outcome of the reexamination proceeding.

Plaintiff's Counsel of Record

Based on a review of the case docket and related public records, the following attorneys represent the plaintiff, NL Giken Inc.

Local Counsel

Firm: Stamoulis & Weinblatt LLC (Wilmington, DE)

This Wilmington-based intellectual property firm is known for representing patent holders in the U.S. District Court for the District of Delaware and is frequently retained as local counsel by out-of-state firms. Attorneys from the firm signed the initial complaint (D.I. 1) filed on January 9, 2024.

• Richard C. Weinblatt - Role: Local Counsel.
  • Experience: A founding partner of the firm, he has over two decades of experience in patent litigation and has argued numerous appeals before the Federal Circuit.
• Stamatios Stamoulis - Role: Local Counsel.
  • Experience: A founding partner with over 20 years of experience, he has litigated patent cases in key jurisdictions including Delaware, Texas, and California.

Lead Counsel / Of Counsel

Firm: Kasowitz Benson Torres LLP (New York, NY)

While docket entries specifically listing pro hac vice admissions for the VIZIO matter have not been publicly located, motions and orders in the contemporaneously filed and related case NL Giken Inc. v. Apple Inc. (1:24-cv-00013, D. Del.) identify the following Kasowitz attorneys as representing NL Giken. Court orders in the Apple case explicitly reference proceedings in the VIZIO matter (identified as 24-28-MN), confirming the same counsel are managing both litigations for the plaintiff.

• John W. Custer - Role: Lead Counsel / Of Counsel.
  • Experience: His practice focuses on patent litigation before U.S. district courts, the International Trade Commission (ITC), and the Federal Circuit across technologies like consumer electronics and cellular communications.
• Aya Cieslak-Tochigi - Role: Of Counsel.
  • Experience: Her experience, while not detailed in publicly available sources, is within the Kasowitz Benson Torres IP litigation group, which handles high-stakes technology and pharmaceutical patent disputes for major global companies.

Counsel for Defendants VIZIO, Inc., Amazon.com, Inc., and Amazon.com Services LLC

The defendants in this action, VIZIO and the Amazon entities, have retained counsel from the Delaware firm Potter Anderson & Corroon LLP to serve as local counsel and have brought in attorneys from Fish & Richardson P.C. as lead counsel.

Based on docket entries and firm biographies, the following attorneys have appeared on behalf of the defendants:

Lead Counsel:

• W. Chad Shear - Principal, Fish & Richardson P.C. (San Diego, CA)

  • A seasoned patent litigator, Shear is noted for his work in complex, high-stakes technology and life sciences cases, including coordinating international trial strategies. He famously helped reverse a $2.5 billion patent damages award against Gilead Sciences, the largest in U.S. history.

• Olga I. May - Principal, Fish & Richardson P.C. (San Diego, CA)

  • May's practice focuses on intellectual property and business litigation. She has been recognized for her litigation work and pro bono service in the San Diego legal community.

Local Counsel:

• David E. Moore - Partner, Potter Anderson & Corroon LLP (Wilmington, DE)

  • As a veteran of the Delaware bar, Moore frequently serves as local counsel in major patent infringement cases, offering deep experience with the district's judges and procedures. He has substantial experience in cases involving telecommunications and medical devices.

• Bindu A. Palapura - Partner, Potter Anderson & Corroon LLP (Wilmington, DE)

  • Palapura's practice centers on patent, trademark, and trade secret litigation across a wide range of technologies, from software to pharmaceuticals. She has represented major technology companies like Apple and IBM in significant patent disputes.