Patent 11689383

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. 2023-05-09 · reel 063585/0787 · Assignment of Assignor's Interest

    DIZENGOF, ALEXANDERCARBYNE LTD., ISRAEL

    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

Original assignee

The original assignee named on the issued patent US11689383 is Carbyne Ltd.

Carbyne Ltd. is an American and Israeli technology company that develops emergency communication technologies, specifically cloud-based "Next Generation 911" (NG911) solutions. Their platform, Carbyne APEX, unifies voice, live video, text, real-time location, and other data for emergency response. They offer both an app-based service ("C-Now") and an app-free option ("C-Lite") that uses a web browser to stream video and location data.

Carbyne Ltd. was acquired by Axon Enterprise for $625 million in November 2025, with the deal expected to close in the first quarter of 2026. Therefore, its current status is acquired and it operates as a subsidiary of Axon.

Assignment timeline

  • 2023-05-09 (executed) / recorded 2023-05-09 — Reel 063585/0787
    • Conveyance: Assignment of Assignor's Interest
    • Assignor: DIZENGOF, ALEXANDER
    • Assignee: CARBYNE LTD., ISRAEL
    • Correspondent: Not specified in available USPTO records.
    • Context: Internal transfer from inventor to the company

Timeline diagram

timeline
    title Ownership of US 11689383
    2017 : Priority date
    2022 : Filed by Carbyne Ltd
    2023 : Inventor assigns to Carbyne Ltd
         : Issued
    2025 : Carbyne acquired by Axon

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The only assignment recorded is from the inventor to Carbyne Ltd., which is an operating company with a clearly defined product and business model.
  2. Known asserter in the chain — Not present. Carbyne Ltd. is an operating company in the emergency communication technology sector. The patent was recently acquired by Axon Enterprise, another operating company. None of the listed assignees are known patent assertion entities like Acacia Research Corp, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, or Innovatio IP Ventures. MPHJ Technology is also a known patent troll.
  3. Repeat correspondent across the chain — Unclear. Only one assignment is recorded, and the correspondent information is not readily available in the Google Patents record for this specific assignment.
  4. Cascading transfers — Not present. Only one assignment from the inventor to the operating company is recorded.
  5. Pre-litigation transfer — Not present. The assignment from the inventor to Carbyne Ltd. occurred on May 9, 2023. The IPR was filed on August 12, 2025, which is more than 6 months after the assignment.
  6. Bankruptcy fire-sale — Not present. Carbyne Ltd. was acquired by Axon Enterprise in November 2025, not due to bankruptcy.
  7. Privateering — Not present. The patent is owned by Carbyne Ltd., an operating company that was acquired by another operating company, Axon Enterprise. There is no indication of transfer to an NPE to assert on Carbyne's behalf.
  8. Defensive aggregator (anti-NPE) — Not present. The current assignee, Carbyne Ltd., and its acquirer, Axon Enterprise, are operating companies.

Verdict

Operating-company assertion. The patent is owned by Carbyne Ltd., an operating company that develops emergency communication technologies, and was recently acquired by Axon Enterprise, another operating company in public safety technology. The only recorded assignment is from the inventor to Carbyne Ltd. (Reel 063585/0787, executed and recorded 2023-05-09), indicating a standard transfer to an employer, not a shell entity.

To verify, refer to the USPTO Assignment Center: https://assignmentcenter.uspto.gov/ and search for patent number 11689383.

Generated 5/18/2026, 12:48:20 PM