Patent 11923498

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.

Active provider: Google · gemini-2.5-flash

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

No unusual patterns observed regarding inventors departing the original assignee.

Original assignee

The original assignee on US patent 11923498 is Ningde Amperex Technology Ltd. Ningde Amperex Technology Ltd (CATL) is a leading global developer and manufacturer of lithium-ion batteries for electric vehicles and energy storage systems. They ship products embodying the claims. Their current status is operating.

Assignment timeline

The USPTO Assignment Center has no recorded assignments for US patent 11923498. This means the original assignee, Ningde Amperex Technology Ltd, still owns the patent.

Timeline diagram

timeline
    title Ownership of US 11923498
    2014 : Priority date
    2022 : Application filed by Ningde Amperex Technology Ltd
    2024 : Patent granted to Ningde Amperex Technology Ltd

NPE / troll-pattern signals

  1. Shell-entity transfer — not present
  2. Known asserter in the chain — not present
  3. Repeat correspondent across the chain — not present
  4. Cascading transfers — not present
  5. Pre-litigation transfer — not present
  6. Bankruptcy fire-sale — not present
  7. Privateering — not present
  8. Defensive aggregator (anti-NPE) — not present

Verdict

Operating-company assertion

The patent is currently owned by the original assignee, Ningde Amperex Technology Ltd, which is an operating company that manufactures and ships products embodying the claims. There are no recorded assignments in the USPTO Assignment Center indicating a transfer to any other entity.

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

Generated 6/27/2026, 12:46:06 AM