Patent 8803836

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

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Ownership chain (2)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

  1. 2023-08-28 · recorded 2023-11-17 · reel 065615/0327 · NUNC PRO TUNC ASSIGNMENT

    PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

    internal reorg

  2. 2024-03-22 · recorded 2024-04-27 · reel 067245/0560 · ASSIGNMENT OF ASSIGNOR'S INTEREST

    PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA; JAPAN DISPLAY INC.PANELTOUCH TECHNOLOGIES LLC

    transfer-to-asserter

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

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Inventors

  • Takeshi Ookawara
  • Noriharu Matsudate

Employer at time of filing: Panasonic Liquid Crystal Display Co Ltd, Japan Display Inc.

Original assignee

The original assignee named on the issued patent US8803836B2 is Panasonic Liquid Crystal Display Co Ltd and Japan Display Inc.
Panasonic Liquid Crystal Display Co Ltd was primarily involved in the manufacturing of liquid crystal display panels. Japan Display Inc. is a leading global manufacturer of small and medium-sized displays, particularly LCDs for smartphones, tablets, and automotive applications.

Current status of original assignees:

  • Panasonic Liquid Crystal Display Co Ltd: Dissolved. The company was absorbed by Panasonic Corporation in 2013 and its operations were wound down.
  • Japan Display Inc.: Operating.

Assignment timeline

  • 2023-08-28 (executed) / recorded 2023-11-17 — Reel 065615/0327

    • Conveyance: NUNC PRO TUNC ASSIGNMENT
    • Assignor: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    • Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    • Correspondent: Not recorded on Google Patents.
    • Context: Internal reorg

  • 2024-03-22 (executed) / recorded 2024-04-27 — Reel 067245/0560

    • Conveyance: ASSIGNMENT OF ASSIGNOR'S INTEREST
    • Assignor: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA; JAPAN DISPLAY INC.
    • Assignee: PANELTOUCH TECHNOLOGIES LLC
    • Correspondent: Not recorded on Google Patents.
    • Context: Transfer-to-asserter

Timeline diagram

timeline
    title Ownership of US 8803836
    2009 : Priority date
    2013 : Application filed
    2014 : Patent issued
    2023 : Assigned to Panasonic Intellectual Property Corp of America
    2024 : Assigned to Paneltouch Technologies LLC

NPE / troll-pattern signals

  1. Shell-entity transfer — present. The assignment on 2024-03-22 (executed) / recorded 2024-04-27 (Reel 067245/0560) shows the patent being transferred from Panasonic Intellectual Property Corporation of America and Japan Display Inc. to PANELTOUCH TECHNOLOGIES LLC. Paneltouch Technologies LLC has been identified by Unified Patents as an NPE (Unified Patents, IPR2025-01246 filed).

  2. Known asserter in the chain — present. The current assignee, Paneltouch Technologies LLC, is listed as a petitioner in PTAB case IPR2025-01246, indicating it is an asserting entity. Unified Patents identifies Paneltouch Technologies as an NPE.

  3. Repeat correspondent across the chain — unclear. The correspondent information is not readily available on Google Patents for the recorded assignments.

  4. Cascading transfers — not present. There are two assignments recorded, with a gap of approximately 7 months between the executed dates, which does not indicate cascading transfers.

  5. Pre-litigation transfer — present. An IPR case (IPR2025-01246) was filed on 2025-08-12, and a US case was filed in the Texas Eastern District Court (2:25-cv-00245) on 2025-02-14, which is less than 6 months after the 2024-03-22 executed assignment to Paneltouch Technologies LLC.

  6. Bankruptcy fire-sale — not present. No evidence of bankruptcy proceedings for the original assignees leading to the transfer.

  7. Privateering — unclear. While the patent was transferred from operating companies (Panasonic and Japan Display) to an NPE (Paneltouch Technologies LLC), there is no specific information available from SEC filings or other public sources to confirm that this is a privateering arrangement where the NPE asserts on the operating company's behalf against competitors.

  8. Defensive aggregator (anti-NPE) — not present. The patent was assigned to Paneltouch Technologies LLC, which is an asserting entity, not a defensive aggregator.

Verdict

NPE — high confidence. The presence of a known asserter (Paneltouch Technologies LLC) in the chain, as identified by Unified Patents, combined with a pre-litigation transfer to this entity (executed 2024-03-22, recorded 2024-04-27, with litigation filed as early as February 2025), strongly indicates an NPE assertion pattern.

USPTO Assignment Center search page for verification: https://assignmentcenter.uspto.gov/

Generated 5/19/2026, 6:47:20 PM