Assignment history

Inventors

• Ahmnon D. Moskowitz: Likely associated with Moskowitz Family LLC at the time of filing (application filed by Moskowitz Family LLC, and Ahmnon D. Moskowitz later assigned rights to Nathan C. Moskowitz, who then assigned to Moskowitz Family LLC).
• Nathan C. Moskowitz: Likely associated with Moskowitz Family LLC at the time of filing (application filed by Moskowitz Family LLC, and Nathan C. Moskowitz later assigned rights to Moskowitz Family LLC).
• Mosheh T. Moskowitz: Likely associated with Moskowitz Family LLC at the time of filing (application filed by Moskowitz Family LLC, and Mosheh T. Moskowitz later assigned rights to Nathan C. Moskowitz, who then assigned to Moskowitz Family LLC).
• Pablo A. Valdivia Y. Alvarado: Likely associated with Moskowitz Family LLC at the time of filing (application filed by Moskowitz Family LLC, and Pablo A. Valdivia Y. Alvarado later assigned rights to Nathan C. Moskowitz, who then assigned to Moskowitz Family LLC).

There are no apparent unusual patterns of inventors departing the original assignee within 12 months of filing, as the assignments appear to be internal transfers to consolidate ownership within the family entity that was the original applicant/assignee.

Original assignee

The entity named on the issued patent as the original assignee is Moskowitz Family LLC.
The patent describes "bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs" and related surgical devices and methods for spinal fusion. It is unclear from the patent text or readily available public information whether Moskowitz Family LLC directly shipped a product embodying the claims. Their primary line of business appears to be related to the development and ownership of intellectual property in the medical device field, specifically spinal implants and surgical tools. Their current status is "operating" as a patent holding entity, as indicated by the ongoing litigation and PTAB case.

Assignment timeline

• 2018-03-12 (executed) / recorded 2018-03-14 — Reel 046200/0812
  • Conveyance: ASSIGNMENT
  • Assignor: MOSKOWITZ, NATHAN C.
  • Assignee: MOSKOWITZ FAMILY LLC
  • Correspondent: MOSKOWITZ, NATHAN C., 20 WEST 64TH STREET, APT 28B, NEW YORK, NY 10023. This correspondent also handled subsequent assignments in this chain.
  • Context: Internal transfer to consolidate inventor rights into the family LLC.
• 2018-04-12 (executed) / recorded 2018-04-23 — Reel 046200/0815
  • Conveyance: ASSIGNMENT
  • Assignor: MOSKOWITZ, MOSHEH T. (INVENTOR)
  • Assignee: MOSKOWITZ, NATHAN C.
  • Correspondent: MOSKOWITZ, NATHAN C., 20 WEST 64TH STREET, APT 28B, NEW YORK, NY 10023. This correspondent recurred in this chain.
  • Context: Internal transfer of inventor rights.
• 2018-04-12 (executed) / recorded 2018-04-25 — Reel 046200/0818
  • Conveyance: ASSIGNMENT
  • Assignor: VALDIVIA Y ALVARADO, PABLO A. (INVENTOR)
  • Assignee: MOSKOWITZ, NATHAN C.
  • Correspondent: MOSKOWITZ, NATHAN C., 20 WEST 64TH STREET, APT 28B, NEW YORK, NY 10023. This correspondent recurred in this chain.
  • Context: Internal transfer of inventor rights.
• 2018-04-12 (executed) / recorded 2018-05-03 — Reel 046200/0821
  • Conveyance: ASSIGNMENT
  • Assignor: MOSKOWITZ, AHMNON D. (INVENTOR)
  • Assignee: MOSKOWITZ, NATHAN C.
  • Correspondent: MOSKOWITZ, NATHAN C., 20 WEST 64TH STREET, APT 28B, NEW YORK, NY 10023. This correspondent recurred in this chain.
  • Context: Internal transfer of inventor rights.

Timeline diagram

timeline
    title Ownership of US 10064738
    2005 : Priority date
    2017 : Application filed by Moskowitz Family LLC
    2018 : Nathan C Moskowitz assigns to Moskowitz Family LLC
         : Mosheh T Moskowitz assigns to Nathan C Moskowitz
         : Pablo A Valdivia Y Alvarado assigns to Nathan C Moskowitz
         : Ahmnon D Moskowitz assigns to Nathan C Moskowitz
         : Patent granted
    2025 : Anticipated expiration
    2026 : PTAB case IPR2026-00265 filed
         : US case filed in Minnesota District Court

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The transfers are primarily from individual inventors to Nathan C. Moskowitz, and then from Nathan C. Moskowitz to Moskowitz Family LLC, which was the original applicant and remains the current assignee. Moskowitz Family LLC does not exhibit the typical characteristics of a shell entity used for licensing-only purposes given its nature as a family entity with inventors.
2. Known asserter in the chain — Unclear. While Unified Patents lists ongoing litigation and a PTAB case for this patent, indicating potential assertion, the assignee "Moskowitz Family LLC" is not a widely recognized public NPE. Further investigation beyond the scope of this analysis would be needed to determine if Moskowitz Family LLC is associated with any known asserter groups.
3. Repeat correspondent across the chain — Present. Nathan C. Moskowitz, at 20 WEST 64TH STREET, APT 28B, NEW YORK, NY 10023, is listed as the correspondent for all four recorded assignments (Reel 046200/0812, Reel 046200/0815, Reel 046200/0818, Reel 046200/0821).
4. Cascading transfers — Present. There are multiple assignments within a short period in 2018 (March-May), where several inventors assigned their rights to Nathan C. Moskowitz, and Nathan C. Moskowitz then assigned to Moskowitz Family LLC. While these are internal, they represent consecutive transfers.
5. Pre-litigation transfer — Not present. The latest assignment was recorded in May 2018. The litigation for this patent was filed in 2026. There is no assignment within 6 months of the first infringement suit.
6. Bankruptcy fire-sale — Not present. No evidence of the original assignee filing for bankruptcy.
7. Privateering — Unclear. There is no information to suggest that an operating company transferred the patent to an NPE to assert on its behalf.
8. Defensive aggregator (anti-NPE) — Not present. The chain does not terminate at a known defensive aggregator.

Verdict

NPE — moderate confidence

The presence of a repeat correspondent (Nathan C. Moskowitz) across multiple internal transfers and cascading transfers among family members/inventors, coupled with the ongoing litigation (PTAB case IPR2026-00265 and a US District Court case in Minnesota), suggests that Moskowitz Family LLC is actively asserting its patent rights, which is characteristic of an NPE. The fact that the ultimate assignee is a "Family LLC" and does not appear to be an operating company producing products embodying the claims further supports this.

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