Assignment history

Inventors

• Ahmnon D. Moskowitz
• Pablo A. Valdivia Y. Alvarado
• Mosheh T. Moskowitz
• Nathan C. Moskowitz

No employer at the time of filing is determinable from the provided patent text.

Original assignee

Moskowitz Family LLC.
The patent describes an "Expandable spinal implant and tool system," indicating Moskowitz Family LLC is likely in the medical device or biotechnology sector. It is unclear from the provided information whether they shipped a product embodying the claims. Their current status is "Operating" as they are listed as the current assignee.

Assignment timeline

• 2021-10-28 (executed) / recorded 2021-10-28 — Reel 059639/0425

  • Conveyance: Assignment of Assignors Interest
  • Assignor: VALDIVIA Y. ALVARADO, PABLO A.
  • Assignee: NATHAN C. MOSKOWITZ
  • Correspondent: MOSKOWITZ FAMILY LLC, 600 AVENUE F, SUITE 200, REDONDO BEACH, CA 90277
  • Context: Internal transfer

• 2021-10-28 (executed) / recorded 2021-10-28 — Reel 059639/0426

  • Conveyance: Assignment of Assignors Interest
  • Assignor: MOSKOWITZ, AHMNON D.
  • Assignee: NATHAN C. MOSKOWITZ
  • Correspondent: MOSKOWITZ FAMILY LLC, 600 AVENUE F, SUITE 200, REDONDO BEACH, CA 90277
  • Context: Internal transfer

• 2021-10-28 (executed) / recorded 2021-10-28 — Reel 059639/0427

  • Conveyance: Assignment of Assignors Interest
  • Assignor: MOSKOWITZ, NATHAN C.
  • Assignee: MOSKOWITZ FAMILY LLC
  • Correspondent: MOSKOWITZ FAMILY LLC, 600 AVENUE F, SUITE 200, REDONDO BEACH, CA 90277. This correspondent recurs in this chain.
  • Context: Internal reorg

• 2021-10-28 (executed) / recorded 2021-10-28 — Reel 059639/0428

  • Conveyance: Assignment of Assignors Interest
  • Assignor: MOSKOWITZ, MOSHEH T.
  • Assignee: NATHAN C. MOSKOWITZ
  • Correspondent: MOSKOWITZ FAMILY LLC, 600 AVENUE F, SUITE 200, REDONDO BEACH, CA 90277
  • Context: Internal transfer

Timeline diagram

timeline
    title Ownership of US 11376136
    2005 : Priority date
    2020 : Application filed by Moskowitz Family LLC
    2021 : Nathan C Moskowitz assigned interests
         : Moskowitz Family LLC assigned interests
    2022 : Patent granted

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The transfers are between individual inventors and Moskowitz Family LLC, which appears to be the original operating entity or closely related to the inventors. The addresses and names do not suggest shell entities.

2. Known asserter in the chain — not present. None of the assignees (Moskowitz Family LLC, Nathan C. Moskowitz) are listed on common NPE lists.

3. Repeat correspondent across the chain — present. "MOSKOWITZ FAMILY LLC, 600 AVENUE F, SUITE 200, REDONDO BEACH, CA 90277" is listed as the correspondent for all four assignments recorded on 2021-10-28 (Reel 059639/0425, 059639/0426, 059639/0427, 059639/0428). While the correspondent is an LLC, it is identified with the Moskowitz family, suggesting an internal or closely managed legal function, rather than an external repeat-player NPE law firm.

4. Cascading transfers — present. There are four transfers executed and recorded on the same day (2021-10-28) involving various Moskowitz family members and Moskowitz Family LLC (Reel 059639/0425, 059639/0426, 059639/0427, 059639/0428). This indicates a series of internal re-organizations or clarifications of ownership within a short timeframe.

5. Pre-litigation transfer — unclear. The transfers occurred on 2021-10-28. The earliest litigation record found is an IPR case filed on 2026-02-16 (IPR2026-00163). This is well over 6 months after the assignments, so it doesn't fit the typical pattern of a pre-litigation transfer to enable assertion. However, the litigation records on Google Patents list several district court cases filed in 2025, which is still more than 6 months after the assignment dates, but could potentially be related to assertion. Without specific filing dates for those district court cases, it's difficult to confirm this signal.

6. Bankruptcy fire-sale — not present. No indication of bankruptcy for Moskowitz Family LLC.

7. Privateering — not present. There is no information to suggest privateering.

8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at any known defensive aggregator.

Verdict

Insufficient data.
While there are signals like cascading transfers and a repeat correspondent (Moskowitz Family LLC itself), these appear to be internal re-organizations within the Moskowitz family and their associated LLC rather than transfers to a third-party NPE. There is no clear evidence of transfer to a shell entity or a known asserter. The litigation events occur significantly after the assignments, making a pre-litigation transfer unlikely in the typical NPE pattern.

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