Patent 9823272

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. 2014-02-21 · reel 032261/0388 · Assignment

    CHEN, MING-CHI; LI, TIEN-CHIA; YEH, DAI-JIN; CHEN, TSUNG-YI; WANG, CHIEN-KUEIMPI CORPORATION

    Correspondent: · HWANG & ASSOCIATES

    transfer-from-inventors-to-original-assignee

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

  • Ming-Chi Chen (MPI Corp.)
  • Tien-Chia LI (MPI Corp.)
  • Dai-Jin YEH (MPI Corp.)
  • Tsung-Yi Chen (MPI Corp.)
  • Chien-Kuei WANG (MPI Corp.)

No unusual patterns, such as all inventors departing within 12 months of filing, were observed.

Original assignee

The original assignee is MPI Corp. MPI Corporation is a global technology company that manufactures and markets innovative test and measurement solutions for the semiconductor, LED, and other industries. They ship products embodying the claims of the patent, specifically wafer testing probe cards. MPI Corp. is currently an operating company.

Assignment timeline

  • 2014-02-21 (executed) / recorded 2014-02-21 — Reel 032261/0388
    • Conveyance: Assignment
    • Assignor: CHEN, MING-CHI; LI, TIEN-CHIA; YEH, DAI-JIN; CHEN, TSUNG-YI; WANG, CHIEN-KUEI
    • Assignee: MPI CORPORATION
    • Correspondent: HWANG & ASSOCIATES, INC., P.O. BOX 2328, SARATOGA, CA, 95070
    • Context: Transfer from inventors to original assignee.

The USPTO Assignment Center search page for US9823272 can be found at: https://assignmentcenter.uspto.gov/#!/patent/9823272

Timeline diagram

timeline
    title Ownership of US 9823272
    2014 : Assigned to MPI CORPORATION
    2017 : Issued

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The patent was assigned directly from the inventors to MPI Corporation, an operating company.
  2. Known asserter in the chain — not present. MPI Corporation is an operating company and does not appear on public NPE lists.
  3. Repeat correspondent across the chain — not present. The correspondent, HWANG & ASSOCIATES, INC., only appears once in this assignment chain.
  4. Cascading transfers — not present. There is only one recorded assignment for this patent.
  5. Pre-litigation transfer — not present. No litigation has been identified for this patent, and the only assignment is from the inventors to the operating company prior to issuance.
  6. Bankruptcy fire-sale — not present. MPI Corp. is an active operating company.
  7. Privateering — not present. There is no evidence of MPI Corp. transferring the patent to an NPE for assertion.
  8. Defensive aggregator (anti-NPE) — not present. The patent is currently assigned to MPI Corp., not a defensive aggregator.

Verdict

Insufficient data
There is only one recorded assignment, which is the initial transfer from the inventors to the original operating assignee, MPI Corporation, recorded on 2014-02-21 (Reel 032261/0388). No subsequent transfers or any NPE-related signals are present in the assignment records.

USPTO Assignment Center search page for US9823272: https://assignmentcenter.uspto.gov/#!/patent/9823272

Generated 6/1/2026, 12:46:54 AM