Patent 12293691

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. 2021-04-06 · reel 005703/0508 · Assignment

    MATSUEDA, YOJIRO; TAKATORI, KENICHINLT TECHNOLOGIES, LTD.

    Correspondent: ALDRIDGE P. HUGGINS · KORUS LAW GROUP, APC

    Transfer of inventors' interest to a corporate entity

  2. 2021-04-15 · reel 005706/0339 · Assignment

    NLT TECHNOLOGIES, LTD.TIANMA MICROELECTRONICS CO., LTD.

    Correspondent: ALDRIDGE P. HUGGINS · KORUS LAW GROUP, APC

    Corporate acquisition or internal transfer

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.

✓ Generated

Inventors

  • Yojiro Matsueda (Tianma Japan Ltd.)
  • Kenichi Takatori (Tianma Japan Ltd.)

Original assignee

The original assignee, Tianma Microelectronics Co Ltd, is a Chinese company that designs, manufactures, and sells flat panel displays, including OLED displays. They ship products embodying the claims. Tianma Microelectronics Co Ltd is currently operating.

Assignment timeline

  • 2021-04-06 (executed) / recorded 2021-04-06 — Reel 005703/0508

    • Conveyance: Assignment
    • Assignor: MATSUEDA, YOJIRO; TAKATORI, KENICHI
    • Assignee: NLT TECHNOLOGIES, LTD.
    • Correspondent: ALDRIDGE P. HUGGINS, KORUS LAW GROUP, APC, 17220 NEWHOPE STREET, SUITE 127, FOUNTAIN VALLEY, CA 92708
    • Context: Transfer of inventors' interest to a corporate entity.

  • 2021-04-15 (executed) / recorded 2021-04-15 — Reel 005706/0339

    • Conveyance: Assignment
    • Assignor: NLT TECHNOLOGIES, LTD.
    • Assignee: TIANMA MICROELECTRONICS CO., LTD.
    • Correspondent: ALDRIDGE P. HUGGINS, KORUS LAW GROUP, APC, 17220 NEWHOPE STREET, SUITE 127, FOUNTAIN VALLEY, CA 92708. This correspondent also appears on reel 005703/0508 in this chain.
    • Context: Corporate acquisition or internal transfer (NLT Technologies, Ltd. became Tianma Japan, Ltd., which is a subsidiary of Tianma Microelectronics Co., Ltd.).

Timeline diagram

timeline
    title Ownership of US 12293691
    2021 : Inventors assign to NLT Technologies
    2021 : NLT Technologies assigns to Tianma Microelectronics
    2025 : US case filed in Texas
    2026 : PTAB case PGR2026-00028 filed

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The assignees in the chain (NLT Technologies, Ltd. and Tianma Microelectronics Co., Ltd.) appear to be operating companies.
  2. Known asserter in the chain — not present. Neither NLT Technologies, Ltd. nor Tianma Microelectronics Co., Ltd. are listed as known NPEs.
  3. Repeat correspondent across the chain — present. ALDRIDGE P. HUGGINS of KORUS LAW GROUP, APC is listed as the correspondent for both assignments on reel 005703/0508 and reel 005706/0339.
  4. Cascading transfers — not present. There are two transfers within a short period, but they represent a clear chain from inventors to NLT Technologies (which became Tianma Japan Ltd.) and then to Tianma Microelectronics Co., Ltd.
  5. Pre-litigation transfer — unclear. The Texas Western District Court case (1:25-cv-02021) was filed in 2025, and the PTAB case (PGR2026-00028) in 2026. The most recent assignment was in 2021, which is more than 6 months prior to either litigation filing.
  6. Bankruptcy fire-sale — not present. There is no indication that either NLT Technologies, Ltd. or Tianma Microelectronics Co., Ltd. underwent bankruptcy proceedings related to these assignments.
  7. Privateering — not present. No evidence suggests an operating company transferred the patent to an NPE to assert on its behalf.
  8. Defensive aggregator (anti-NPE) — not present. The chain ends with Tianma Microelectronics Co., Ltd., which is an operating company, not a defensive aggregator. Unified Patents is a petitioner in PGR2026-00028, but they are challenging the patent, not acquiring it defensively.

Verdict

Insufficient data. While there is a repeat correspondent, this alone is not enough to confidently label Tianma Microelectronics Co., Ltd. as an NPE, especially given that they are an operating company in the display device field and the original assignee. The current litigation involves Unified Patents challenging the patent, which is characteristic of defensive aggregation against potential assertion, but the patent ownership itself does not show a clear NPE pattern.

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

Generated 5/29/2026, 12:46:00 AM