Patent 10426633

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 (6)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

  1. 2019-02-05 · reel 048035/0615 · Assignment

    VALDIVIA Y. ALVARADO, PABLO A.MOSKOWITZ, NATHAN C.

    Correspondent: Nathan C. Moskowitz

    Internal transfer of inventor's interest.

  2. 2019-02-05 · reel 048035/0615 · Assignment

    MOSKOWITZ, MOSHEH T.MOSKOWITZ, NATHAN C.

    Correspondent: Nathan C. Moskowitz

    Internal transfer of inventor's interest.

  3. 2019-02-05 · reel 048035/0615 · Assignment

    MOSKOWITZ, AHMNON D.MOSKOWITZ, NATHAN C.

    Correspondent: Nathan C. Moskowitz

    Internal transfer of inventor's interest.

  4. 2019-02-05 · reel 048035/0615 · Assignment

    SUGALSKI, ERICMOSKOWITZ, NATHAN C.

    Correspondent: Nathan C. Moskowitz

    Internal transfer of inventor's interest.

  5. 2019-02-05 · reel 048035/0615 · Assignment

    MOSKOWITZ, NATHAN C.MOSKOWITZ FAMILY LLC

    Correspondent: Nathan C. Moskowitz

    Internal reorg, transfer to original assignee.

  6. 2021-07-29 · recorded 2021-08-04 · reel 056461/0880 · Assignment

    SCHOON, DAVIDMOSKOWITZ FAMILY LLC

    Correspondent: Nathan C. Moskowitz

    Internal reorg, transfer 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

  • Ahmnon D. Moskowitz (Moskowitz Family LLC)
  • Mosheh T. Moskowitz (Moskowitz Family LLC)
  • Pablo A. Valdivia Y. Alvarado (Moskowitz Family LLC)
  • Eric Sugalski (Moskowitz Family LLC)
  • Nathan C. Moskowitz (Moskowitz Family LLC)

There are no unusual patterns indicating inventors departing the original assignee.

Original assignee

Moskowitz Family LLC. It is unclear from the patent text whether Moskowitz Family LLC shipped a product embodying the claims. Their primary line of business appears to be related to medical devices, specifically intervertebral spacers. As of today's date, the current status of Moskowitz Family LLC is operating, based on recent assignment activities.

Assignment timeline

  • 2019-02-05 (executed) / recorded 2019-02-05 — Reel 048035/0615

    • Conveyance: Assignment
    • Assignor: VALDIVIA Y. ALVARADO, PABLO A.
    • Assignee: MOSKOWITZ, NATHAN C.
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal transfer of inventor's interest.

  • 2019-02-05 (executed) / recorded 2019-02-05 — Reel 048035/0615

    • Conveyance: Assignment
    • Assignor: MOSKOWITZ, MOSHEH T.
    • Assignee: MOSKOWITZ, NATHAN C.
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal transfer of inventor's interest.

  • 2019-02-05 (executed) / recorded 2019-02-05 — Reel 048035/0615

    • Conveyance: Assignment
    • Assignor: MOSKOWITZ, AHMNON D.
    • Assignee: MOSKOWITZ, NATHAN C.
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal transfer of inventor's interest.

  • 2019-02-05 (executed) / recorded 2019-02-05 — Reel 048035/0615

    • Conveyance: Assignment
    • Assignor: SUGALSKI, ERIC
    • Assignee: MOSKOWITZ, NATHAN C.
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal transfer of inventor's interest.

  • 2019-02-05 (executed) / recorded 2019-02-05 — Reel 048035/0615

    • Conveyance: Assignment
    • Assignor: MOSKOWITZ, NATHAN C.
    • Assignee: MOSKOWITZ FAMILY LLC
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal reorg, transfer to original assignee.

  • 2021-07-29 (executed) / recorded 2021-08-04 — Reel 056461/0880

    • Conveyance: Assignment
    • Assignor: SCHOON, DAVID
    • Assignee: MOSKOWITZ FAMILY LLC
    • Correspondent: Nathan C. Moskowitz, 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155. This correspondent appears multiple times in this chain.
    • Context: Internal reorg, transfer to original assignee.

Timeline diagram

timeline
    title Ownership of US 10426633
    2018 : Filed by Moskowitz Family LLC
    2019 : Inventors assign to Nathan C Moskowitz
         : Nathan C Moskowitz assigns to Moskowitz Family LLC
         : Issued
    2021 : Schoon assigns to Moskowitz Family LLC

NPE / troll-pattern signals

  1. Shell-entity transfer — unclear. While "Moskowitz Family LLC" could potentially be a licensing entity, there is no direct evidence (e.g., registered-agent address, no products in commerce) to confirm it is a shell entity. The assignments appear to be internal transfers among inventors and to the original assignee.
  2. Known asserter in the chain — not present. None of the assignors or assignees match public NPE lists.
  3. Repeat correspondent across the chain — present. Nathan C. Moskowitz of 7400 SW 50th Terrace, Ste. 104, Miami, FL, 33155, is listed as the correspondent for all recorded assignments (Reel 048035/0615 and Reel 056461/0880). This recurrence is a signal.
  4. Cascading transfers — not present. While there are multiple assignments recorded on the same day in 2019, they represent a series of internal transfers from individual inventors to Nathan C. Moskowitz, and then from Nathan C. Moskowitz to the Moskowitz Family LLC, which appears to be the original assignee. This is an internal restructuring rather than a cascading transfer through different LLCs.
  5. Pre-litigation transfer — unclear. The patent was issued on October 1, 2019. The provided litigation data indicates a PTAB case IPR2026-00217 was filed and US cases were filed in Minnesota and Delaware District Courts in 2025. The last recorded assignment was on 2021-08-04 (Reel 056461/0880). This predates the earliest known litigation by more than six months.
  6. Bankruptcy fire-sale — not present. There is no indication of the original assignee or any subsequent assignees filing for bankruptcy and the patent being sold in proceedings.
  7. Privateering — not present. There is no information in the patent or associated public records to suggest privateering.
  8. Defensive aggregator (anti-NPE) — not present. The chain does not end at any known defensive aggregators.

Verdict

NPE — moderate confidence

The primary signal for this verdict is the presence of a repeat correspondent, Nathan C. Moskowitz, handling all assignments, which is a common characteristic of NPE operations (Reel 048035/0615, Reel 056461/0880). While the entity "Moskowitz Family LLC" is not definitively a shell, the internal transfers and the consistent correspondent suggest a structured approach to patent management that could be consistent with licensing rather than direct product manufacturing.

For verification, see the USPTO Assignment Center: https://assignmentcenter.uspto.gov/

Generated 5/28/2026, 12:46:53 PM