Patent 8686562

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. 2010-01-21 · reel 023829/0191 · Assignment

    Sadiki JordanInternational Rectifier Corporation

    Inventor assignment to the original assignee

  2. 2015-10-01 · recorded 2018-07-23 · reel 046612/0968 · Change of Name

    International Rectifier CorporationInfineon Technologies Americas Corp.

    change of name due to acquisition

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

  • Sadiki Jordan (International Rectifier Corp USA at the time of filing)

Original assignee

The original assignee, International Rectifier Corp USA, was a manufacturer of power management semiconductors. They produced products embodying the claims of the patent. International Rectifier Corp USA was acquired by Infineon Technologies in 2015.

Assignment timeline

  • 2010-01-21 (executed) / recorded 2010-01-21 — Reel 023829/0191

    • Conveyance: Assignment
    • Assignor: Sadiki Jordan
    • Assignee: International Rectifier Corporation
    • Correspondent: N/A
    • Context: Inventor assignment to the original assignee

  • 2015-10-01 (executed) / recorded 2018-07-23 — Reel 046612/0968

    • Conveyance: Change of Name
    • Assignor: International Rectifier Corporation
    • Assignee: Infineon Technologies Americas Corp.
    • Correspondent: N/A
    • Context: Name change reflecting the acquisition of International Rectifier by Infineon Technologies.

Timeline diagram

timeline
    title Ownership of US 8686562
    2009 : Filed by International Rectifier
    2010 : Assigned to International Rectifier
    2014 : Issued
    2015 : Intl Rectifier acquired by Infineon
    2018 : Name change to Infineon Tech Americas Corp
    2024 : District court case filed
         : ITC case filed
    2025 : IPR filed

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The assignees are known operating companies (International Rectifier and Infineon Technologies Americas Corp.).
  2. Known asserter in the chain — not present. None of the recorded assignees (International Rectifier, Infineon Technologies Americas Corp.) are on public NPE lists.
  3. Repeat correspondent across the chain — unclear. Correspondent information was not available for the 2010-01-21 and 2018-07-23 assignments in the provided text.
  4. Cascading transfers — not present. There are only two recorded assignments, spread across several years.
  5. Pre-litigation transfer — not present. The last assignment (change of name) was recorded in 2018, significantly before the district court case filing in March 2024 and the ITC case filing in July 2024.
  6. Bankruptcy fire-sale — not present. The transfer to Infineon was an acquisition, not a bankruptcy sale.
  7. Privateering — unclear. While Infineon Technologies Americas Corp. is a known operating company and is asserting the patent in litigation, the context of whether this constitutes privateering (e.g., asserting on behalf of another entity) is not provided in the given information.
  8. Defensive aggregator (anti-NPE) — not present. The patent is currently owned by Infineon Technologies Americas Corp., an operating company.

Verdict

Operating-company assertion. The patent has been consistently held by operating companies (International Rectifier Corporation and subsequently Infineon Technologies Americas Corp.) that produce semiconductor devices. The current assignee, Infineon Technologies Americas Corp., is actively asserting the patent in district court (4:24-cv-01553) and previously in an ITC investigation (337-TA-1414) against alleged competitors, Innoscience entities.

(Verification: https://assignmentcenter.uspto.gov/)

Generated 7/1/2026, 6:45:47 AM