Patent 8640498

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.

Cases on file (2)

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Specific litigation cases in our database that name US patent 8640498. The free-form analysis below may also discuss cases beyond this list.

  • Corning Incorporated v. HKC Corp et al.filed Jan 31, 2025
    337-TA-1441International Trade CommissionPending before Commission (Initial Determination issued)

    Defendants: HKC Corp, Caihong Display Devices Co., Ltd., Hisense USA Corporation, and 3 others

    Other patents asserted: 8642491

  • Untitled case
    IPR2025-00937Patent Trial and Appeal Board (PTAB)Not Instituted - Procedural

    Defendants: Corning Inc.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

✓ Generated

Known litigation involving US patent 8640498 includes the following cases:

  1. United States International Trade Commission (USITC) Investigation No. 337-TA-1441

    • Plaintiff(s): Corning Incorporated
    • Defendant(s): Caihong Display Devices Co., Ltd., HKC Corporation Ltd., HKC Overseas Ltd., LG Electronics U.S.A., Inc., TCL China Star Optoelectronics Technology Co., Ltd., VIZIO, Inc., Xianyang CaiHong Optoelectronics Technology Co., Ltd., and other companies
    • Jurisdiction: United States International Trade Commission (USITC)
    • Case Number: 337-TA-1441
    • Filing Date: January 31, 2025
    • Outcome or Current Status: As of April 7, 2026, the case is "Pending Before the Commission". An initial determination on April 8, 2026, found that Caihong's "616" formula glass substrate does not infringe Corning's patents, while their discontinued "615" formula product was found to be infringing. US patent 8640498 was one of the key patents asserted by Corning in this investigation. A notice from December 23, 2025, indicated the termination of the investigation for US Patent No. 7,851,394 and claim 2 of US Patent No. 8,642,491, but did not specify the termination of US8640498.

  2. Patent Trial and Appeal Board (PTAB) Inter Partes Review (IPR) IPR2025-00937

    • Plaintiff(s): Petitioner information is not explicitly stated in the provided search results, but the case is listed under "Unified Patents PTAB Data," suggesting Unified Patents or one of its members is the petitioner.
    • Defendant(s): Corning Inc. (as the Patent Owner of US8640498).
    • Jurisdiction: Patent Trial and Appeal Board (PTAB)
    • Case Number: IPR2025-00937
    • Filing Date: The exact filing date is not explicitly available in the provided search results, but the case number "IPR2025-00937" indicates it was filed in 2025.
    • Outcome or Current Status: "Not Instituted - Procedural".

Generated 5/15/2026, 6:45:27 AM