Patent 12015118

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. 2022-03-29 · recorded 2022-03-30 · reel 059535/0628 · Assignment

    LIN, CHAOWANG; QU, CHANGMING; SU, YISONG; YANG, FAN; ZHANG, XIAOZHEN; ZHONG, HUAWEININGDE AMPEREX TECHNOLOGY LIMITED

    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

  • Chaowang Lin (Ningde Amperex Technology Ltd)
  • Fan Yang (Ningde Amperex Technology Ltd)
  • Yisong Su (Ningde Amperex Technology Ltd)
  • Huawei Zhong (Ningde Amperex Technology Ltd)
  • Changming Qu (Ningde Amperex Technology Ltd)
  • Xiaozhen Zhang (Ningde Amperex Technology Ltd)

All inventors were employed by the original assignee, Ningde Amperex Technology Ltd, at the time of filing.

Original assignee

The original assignee is Ningde Amperex Technology Ltd. Ningde Amperex Technology Ltd (CATL) is a Chinese battery manufacturer and technology company, which primarily develops and manufactures lithium-ion batteries for electric vehicles and energy storage systems. They ship products embodying the claims. The company is currently operating.

Assignment timeline

  • 2022-03-29 (executed) / recorded 2022-03-30 — Reel 059535/0628
    • Conveyance: Assignment
    • Assignor: LIN, CHAOWANG; QU, CHANGMING; SU, YISONG; YANG, FAN; ZHANG, XIAOZHEN; ZHONG, HUAWEI
    • Assignee: NINGDE AMPEREX TECHNOLOGY LIMITED
    • Correspondent: SUITE 200, 550 S. HOPE STREET, LOS ANGELES, CA, 90071
    • Context: Transfer from inventors to original assignee

Timeline diagram

timeline
    title Ownership of US 12015118
    2022 : Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED
    2024 : Issued to NINGDE AMPEREX TECHNOLOGY LIMITED

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The only recorded assignment is from the individual inventors to Ningde Amperex Technology Limited, an operating company.
  2. Known asserter in the chain — Not present. Ningde Amperex Technology Limited is a known operating company.
  3. Repeat correspondent across the chain — Unclear. There is only one assignment in the chain, making recurrence impossible to determine from these records. The correspondent is listed as SUITE 200, 550 S. HOPE STREET, LOS ANGELES, CA, 90071, but no attorney name or firm is provided in the available USPTO Assignment records for reel 059535/0628.
  4. Cascading transfers — Not present. There is only one assignment recorded.
  5. Pre-litigation transfer — Not present. The assignment from the inventors to Ningde Amperex Technology Limited occurred on March 29, 2022, and the patent was issued on June 18, 2024. While litigation has been filed (a US case in Texas Eastern District Court, 2:24-cv-00728, and PTAB IPR2025-00524), the patent was issued well after the assignment.
  6. Bankruptcy fire-sale — Not present. There is no indication that Ningde Amperex Technology Limited has filed for bankruptcy.
  7. Privateering — Not present. There is no evidence of a privateering arrangement.
  8. Defensive aggregator (anti-NPE) — Not present. The patent is currently assigned to an operating company, Ningde Amperex Technology Limited.

Verdict

Insufficient data. There is only one recorded assignment for US12015118, which is the initial transfer from the inventors to the original operating assignee, Ningde Amperex Technology Limited (Reel 059535/0628, recorded 2022-03-30). This single assignment does not provide enough information to identify any NPE or troll patterns.

https://assignmentcenter.uspto.gov/patent/index.html/patentNumber/[12015118](/patent/12015118)
https://patents.google.com/patent/[US12015118B2](/patent/US12015118B2)/en
https://patents.google.com/patent/US12015118B2/en
https://patents.google.com/patent/US12015118B2/en
https://patents.google.com/patent/US12015118B2/en

Generated 6/27/2026, 12:45:42 AM