Light Guide Innovations, LLC v. TCT Mobile International Limited, et al.

This patent infringement litigation, Light Guide Innovations, LLC v. TCT Mobile International Limited, et al., case number 2:24-cv-00646-RWS-RSP, was filed on August 8, 2024, in the U.S. District Court for the Eastern District of Texas. The plaintiff, Light Guide Innovations, LLC, is a Texas-registered entity and an apparent Non-Practicing Entity (NPE) or Patent Assertion Entity (PAE) that is part of the Anjay Venture Partners LLC monetization operation. Light Guide Innovations' litigation campaigns are financially backed by Chicago-based litigation funder Longford Capital Management. The defendants in this specific case are TCT Mobile International Limited and several affiliated entities, including TCL Electronics Holdings Limited, TCL Communication Technology Holdings Limited, TCL Communication Limited, and TCL Technology Group Corporation. TCT Mobile International Limited, headquartered in Hong Kong, is involved in the manufacturing and export of mobile phones and accessories. The accused products in this and related cases are displays and TVs that incorporate LED, QLED, and QD-MINI LED technologies, specifically targeting LED strips used for television or other display backlighting.

The sole patent asserted in this case is U.S. Patent 8,267,537, titled "Light emitting apparatus and lens structure thereof." This patent broadly describes a light-emitting device and its associated lens design. The case is being heard in the Eastern District of Texas, with District Judge Robert W. Schroeder, III, and Magistrate Judge Roy S. Payne presiding. The Eastern District of Texas is known as a "rocket docket" due to its expedited patent litigation timeline and is often perceived as plaintiff-friendly, making it a preferred venue for patent assertion entities. This specific case is part of a larger litigation campaign by Light Guide Innovations, LLC, which has also filed against other major electronics manufacturers like Hisense, Samsung, and Walmart, asserting patents from a portfolio acquired from Suzhou Lekin Semiconductor Co. Ltd. A claim construction hearing is scheduled for April 22, 2026, and a case management conference for September 14, 2026.

Key Legal Developments and Outcome for Light Guide Innovations, LLC v. TCT Mobile International Limited, et al.

The patent infringement lawsuit, Light Guide Innovations, LLC v. TCT Mobile International Limited, et al., Case No. 2:24-cv-00646-RWS-RSP, was filed in the U.S. District Court for the Eastern District of Texas on August 8, 2024. The case is currently pending.

Filing & Initial Pleadings

• Complaint Filed: Light Guide Innovations, LLC initiated the lawsuit on August 8, 2024, alleging infringement of U.S. Patent 8,267,537. The defendants in this action include TCT Mobile International Limited and other related entities such as TCL Communication Limited, TCL Communication Technology Holdings Limited, TCL Electronics Holdings Limited, and TCL Technology Group Corporation.

Pre-Trial Motions and Scheduling

• Docket Control Order: An Agreed Docket Control Order was filed by GENGHISCOMM HOLDINGS, LLC (likely a related entity or for a related case consolidated for scheduling purposes) and signed by Magistrate Judge Roy S. Payne on March 2, 2025. This order set key dates for the litigation.
• Markman Hearing Scheduled: A Markman (Claim Construction) Hearing was initially set for December 19, 2025, before Magistrate Judge Roy S. Payne. This hearing was later reset for April 22, 2026, at 1:30 PM, with only a time change.
• Pretrial Conference and Jury Selection Scheduled: The Docket Control Order also scheduled a Pretrial Conference for May 11, 2026, at 9:00 AM before Magistrate Judge Roy S. Payne. Jury Selection is set for October 19, 2026, at 9:00 AM before District Judge Robert W. Schroeder III.

Current Posture

As of May 16, 2026, the case is active and proceeding through the pre-trial stages. The Markman hearing has been set, and a trial date is on the calendar for late 2026.

Parallel PTAB IPR/PGR Proceedings

A search for Inter Partes Review (IPR) or Post-Grant Review (PGR) proceedings related to U.S. Patent 8,267,537 via the USPTO's P-TACTS system did not immediately yield any direct results indicating an active IPR or PGR against this specific patent initiated by TCT Mobile International Limited or its affiliates in relation to this case. However, the patent at issue, 8,267,537, was mentioned in relation to the Eastern District of Texas case in a document titled "UNITED STATES PATENT AND TRADEMARK OFFICE BEFORE..." dated October 7, 2025, suggesting that the patent's validity might be contested in various venues. Without further information, the direct effect of any such proceedings on this specific litigation is not known.

Further details regarding the filing of answers, counterclaims, or the outcomes of any substantive pre-trial motions beyond the scheduling orders are not publicly available through the initial searches.## Key Legal Developments and Outcome for Light Guide Innovations, LLC v. TCT Mobile International Limited, et al.

The patent infringement lawsuit, Light Guide Innovations, LLC v. TCT Mobile International Limited, et al., Case No. 2:24-cv-00646-RWS-RSP, was filed in the U.S. District Court for the Eastern District of Texas and is currently pending.

Filing & Initial Pleadings

• Complaint Filed (2024-08-08): Light Guide Innovations, LLC initiated the lawsuit on August 8, 2024, alleging infringement of U.S. Patent 8,267,537. The defendants named in the complaint include TCT Mobile International Limited, TCL Communication Limited, TCL Communication Technology Holdings Limited, TCL Electronics Holdings Limited, and TCL Technology Group Corporation. No information regarding the defendants' answer or any counterclaims is publicly available from the provided search results.

Pre-Trial Motions of Substance

• No specific pre-trial motions to dismiss, transfer, or stay pending IPR have been identified in the provided search results beyond the general scheduling information.

Claim Construction (Markman) Outcomes

• Markman Hearing Scheduled (2025-12-19, reset to 2026-04-22): A Markman (Claim Construction) Hearing was initially scheduled for December 19, 2025, before Magistrate Judge Roy S. Payne. This hearing was subsequently reset with only a time change for April 22, 2026, at 1:30 PM. The outcome of this hearing is not yet available, as today's date is May 16, 2026.

Discovery Milestones

• Agreed Docket Control Order (2025-03-02): An Agreed Docket Control Order was filed by GENGHISCOMM HOLDINGS, LLC (likely a related plaintiff entity in a larger litigation effort, as indicated by the "member case" description) and signed by Magistrate Judge Roy S. Payne on March 2, 2025. This order would typically establish the discovery schedule and other pre-trial deadlines, but specific discovery milestones with strategic significance are not detailed in the provided information.

Trial Events, Verdict, and Post-Trial Motions

• Jury Selection Scheduled (2026-10-19): Jury selection for the case is currently scheduled for October 19, 2026, at 9:00 AM before District Judge Robert W. Schroeder III. No trial events, verdict, or post-trial motions have occurred as the case is still in the pre-trial phase.

Settlement, Dismissal, Judgment, or Appeal

• The case is currently pending, with a trial date set for late 2026. There is no information indicating a settlement, dismissal, judgment, or appeal at this stage.

Parallel PTAB IPR/PGR Proceedings

• While the patent-in-suit is U.S. Patent 8,267,537, a direct search for IPR or PGR proceedings specifically against this patent by TCT Mobile International Limited or its affiliates in relation to this case did not yield a definitive result in the provided search snippets. The USPTO's Patent Trial and Appeal Case Tracking System (P-TACTS) is the official means for tracking such proceedings. The patent 8,267,537 has been mentioned in other court documents, suggesting its validity may be challenged in various forums, but specific PTAB proceedings directly impacting this case are not confirmed by the current information. Therefore, the effect of any such proceedings on the litigation remains unknown.

Counsel of record representing Light Guide Innovations, LLC in Light Guide Innovations, LLC v. TCT Mobile International Limited, et al. (2:24-cv-00646-RWS-RSP) includes:

• Vincent J. Rubino, III

  • Role: Lead Counsel
  • Firm: Fabricant LLP, New York, NY
  • Experience Note: Identified as lead counsel for Patent Owner Light Guide Innovations LLC in related PTAB proceedings concerning the '537 patent.

• Alfred Ross Fabricant

  • Role: Counsel
  • Firm: Fabricant LLP, New York, NY
  • Experience Note: A named attorney from Fabricant LLP appearing for the plaintiff in this action.

• Peter Lambrianakos

  • Role: Counsel
  • Firm: Fabricant LLP, New York, NY
  • Experience Note: An attorney from Fabricant LLP appearing for the plaintiff.

• Jacob Daniel Ostling

  • Role: Counsel
  • Firm: Fabricant LLP, Rye, NY
  • Experience Note: An attorney from Fabricant LLP appearing for the plaintiff.

The defendants, TCT Mobile International Limited, et al., are represented by counsel from Merchant & Gould P.C. and MT2 Law Group.

Here are the identified counsel of record for the defendant(s):

• Alexander B. Englehart

  • Role: Of Counsel (filed a Pro Hac Vice appearance on behalf of all defendants, indicating he is likely lead or co-lead counsel).
  • Firm: Merchant & Gould P.C., Washington, D.C. Area office.
  • Relevant Experience: Provides legal guidance in patent prosecution and litigation, with experience in mobile devices, wireless networking, and other technologies. His work includes all facets of patent litigation in U.S. district courts, the International Trade Commission (ITC), and the U.S. Patent and Trademark Office (USPTO), often involving high-stakes litigation paired with post-grant proceedings.

• Andy Tindel

  • Role: Local Counsel (appeared on behalf of TCL Communication Limited, TCL Communication Technology Holdings Limited, TCL Electronics Holdings Limited, TCL Technology Group Corporation, and TCT Mobile International Limited). His firm profile explicitly states he "frequently serves as an advisor, attorney and local counsel for domestic and overseas corporate clients and national law firms with litigation pending in the United States District Courts for the Eastern District of Texas."
  • Firm: MT2 Law Group, Tyler, Texas.
  • Relevant Experience: Specializes in patent infringement actions and intellectual property litigation, frequently serving as local counsel in the Eastern District of Texas. He is board certified in Civil Trial Law, Civil Appellate Law, and Personal Injury Trial Law by the Texas Board of Legal Specialization.