Patent 11251394

Litigation summary

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

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PTAB activity (1)

AIA trial proceedings — IPR, PGR, CBM — filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced directly from the PTAB Trial API.

  • IPR2025-01579IPRfiled Oct 23, 2025vs. Tianma Microelectronics Co., Ltd. et al.Discretionary Denial

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Cases on file (2)

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Specific litigation cases in our database that name US patent 11251394. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

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

✓ Generated

As of my knowledge date of April 26, 2026, United States Patent No. 11,251,394 is involved in at least two legal proceedings: a patent infringement lawsuit and an Inter Partes Review (IPR) proceeding at the Patent Trial and Appeal Board (PTAB).

District Court Litigation:

  • Plaintiff: LG Display Co., Ltd.
  • Defendants: Tianma Microelectronics Co., Ltd., Tianma Microelectronics (HONG KONG) Limited, and Wuhan Tianma Microelectronics Co., Ltd.
  • Jurisdiction: U.S. District Court for the Eastern District of Texas.
  • Case Number: 5:25-cv-00078.
  • Filing Date: June 13, 2025.
  • Status: The case is currently open.
  • Details: The lawsuit alleges infringement of seven patents related to LCD and OLED technologies, including the '394 patent. The '394 patent specifically covers an organic light-emitting diode (OLED) structure that integrates touch functionality into the display. In December 2025, Tianma filed a countersuit against LG Display in the U.S. District Court for the Western District of Texas, alleging infringement of four of its own patents.

Patent Trial and Appeal Board (PTAB) Proceeding:

  • Petitioner: Tianma Microelectronics Co., Ltd.
  • Patent Owner: LG Display Co., Ltd.
  • Jurisdiction: United States Patent and Trademark Office, Patent Trial and Appeal Board.
  • Case Number: IPR2025-01579.
  • Filing Date: Tianma filed the IPR petition in October 2025.
  • Outcome: The USPTO Director denied the institution of the Inter Partes Review. The decision, issued on March 18, 2026, was not based on the technical merits of the patent but rather on Tianma's standing to file the petition. The USPTO cited concerns over potential foreign government influence, as a state-owned Chinese enterprise, Aviation Industry Corp. of China (AVIC), holds a significant stake in Tianma. The Director determined that a foreign government is not a "person" eligible to file an IPR under the America Invents Act.

Generated 5/13/2026, 12:27:13 AM