Patent 7812505

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 (1)

Asserters network →

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

  1. 2008-07-25 · recorded 2008-11-29 · reel 021900/0412 · Assignment

    KIM, HYE JIN; KIM, JONG DAE; LEE, JAE WOO; LEE, SANG KYUN; LEE, SUNG Q; PARK, KANG HOELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Correspondent: BAE, KUK JIN · MIZHO PATENT & LAW FIRM

    internal reorg

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

  • Sang Kyun Lee (Electronics and Telecommunications Research Institute ETRI)
  • Sung Q Lee (Electronics and Telecommunications Research Institute ETRI)
  • Hye Jin Kim (Electronics and Telecommunications Research Institute ETRI)
  • Jae Woo Lee (Electronics and Telecommunications Research Institute ETRI)
  • Kang Ho Park (Electronics and Telecommunications Research Institute ETRI)
  • Jong Dae Kim (Electronics and Telecommunications Research Institute ETRI)

No unusual patterns observed regarding inventor departures.

Original assignee

Electronics and Telecommunications Research Institute (ETRI). ETRI is a government-funded research institute in South Korea, primarily engaged in R&D in information and communication technologies. As a research institute, it generally develops technologies and may not directly ship products embodying the claims in the same way a commercial entity would. ETRI is currently an operating entity.

Assignment timeline

  • 2008-07-25 (executed) / recorded 2008-11-29 — Reel 021900/0412
    • Conveyance: Assignment
    • Assignor: KIM, HYE JIN; KIM, JONG DAE; LEE, JAE WOO; LEE, SANG KYUN; LEE, SUNG Q; PARK, KANG HO
    • Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    • Correspondent: BAE, KUK JIN; MIZHO PATENT & LAW FIRM; 4F, NEW HANKUK BLDG., 190-6, NAEJA-DONG, CHONGRO-KU, SEOUL, KOREA
    • Context: Internal reorg (assignment from inventors to their employer)

Timeline diagram

timeline
    title Ownership of US 7812505
    2008 : Inventors assigned to ETRI
    2010 : Patent issued to ETRI

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The sole recorded assignment is from the individual inventors to ETRI, a government-funded research institute.
  2. Known asserter in the chain — not present. ETRI is not a known patent asserter.
  3. Repeat correspondent across the chain — unclear. Only one assignment is recorded, so there is no recurrence to observe. The correspondent firm, MIZHO PATENT & LAW FIRM, is based in Korea and its activity on other US patent assignments is not immediately determinable from the provided data.
  4. Cascading transfers — not present. Only one assignment is recorded.
  5. Pre-litigation transfer — not present. The assignment predates the patent issuance and any known litigation.
  6. Bankruptcy fire-sale — not present. No indication of bankruptcy for ETRI.
  7. Privateering — not present. No evidence of privateering.
  8. Defensive aggregator (anti-NPE) — not present. The patent is currently held by ETRI, not a defensive aggregator.

Verdict

Insufficient data. Only a single assignment from the inventors to the original assignee (ETRI) is recorded. This assignment is standard practice for employee-inventors. Without further assignment records, it is not possible to determine if the patent has been transferred to an NPE or is being used for assertion.

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

Generated 5/31/2026, 12:46:01 PM