Assignment history

Inventors

• David Townley (Neurent Medical Ltd)

Original assignee

The original assignee, Neurent Medical Ltd, appears to be an operating company based on the patent's description of "Systems and methods for therapeutic nasal treatment using handheld device" and its focus on treating rhinitis and associated sleep problems, implying product development and commercialization. Neurent Medical Ltd is currently operating.

Assignment timeline

• 2024-06-25 (executed) / recorded 2024-06-25 — Reel 006248/0173

  • Conveyance: Assignment
  • Assignor: Neurent Medical Ltd
  • Assignee: Neurent Medical Limited
  • Correspondent: Matthew J. Van Eman, The Van Eman Law Firm, P.A., 2400 Market Street, Suite 315, Philadelphia, PA, 19103. This correspondent also appears on the subsequent entry.
  • Context: Internal reorg (change of legal entity name/structure)

• 2024-10-18 (executed) / recorded 2024-10-18 — Reel 006323/0488

  • Conveyance: Security Interest
  • Assignor: Neurent Medical Limited
  • Assignee: CLARET EUROPEAN SPECIALTY LENDING COMPANY III, S.A R.L.
  • Correspondent: Matthew J. Van Eman, The Van Eman Law Firm, P.A., 2400 Market Street, Suite 315, Philadelphia, PA, 19103. This correspondent also appeared on the preceding entry.
  • Context: Securitization

Timeline diagram

timeline
    title Ownership of US 12089889
    2024 : Filed by Neurent Medial Ltd
    2024 : Assigned to Neurent Medical Limited
    2024 : Security interest to CLARET

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The initial transfer is a name change from "Neurent Medial Ltd" to "Neurent Medical Limited", which appears to be an internal restructuring of an operating company. The subsequent transaction is a security interest filing, not a transfer of ownership to a shell entity.

2. Known asserter in the chain — not present. Neither Neurent Medical Ltd/Limited nor CLARET EUROPEAN SPECIALTY LENDING COMPANY III, S.A R.L. are recognized as known NPEs in public databases like RPX or Unified Patents.

3. Repeat correspondent across the chain — present. Matthew J. Van Eman of The Van Eman Law Firm, P.A. is listed as the correspondent for both recorded assignments (Reel 006248/0173 and Reel 006323/0488).

4. Cascading transfers — not present. There are only two recorded events and they are not consecutive assignments transferring ownership through chained LLCs.

5. Pre-litigation transfer — unclear. While there is litigation mentioned in Google Patents (PTAB case IPR2025-01125 filed, family has litigation), the assignment records themselves do not explicitly indicate transfers directly preceding litigation that would suggest a pre-litigation transfer to an asserting entity. The security interest was recorded in October 2024, and the IPR was filed in March 2025.

6. Bankruptcy fire-sale — not present. There is no indication in the assignment records or Google Patents legal events that the original assignee, Neurent Medical Ltd, has filed for bankruptcy.

7. Privateering — not present. No evidence suggests an operating company transferring the patent to an NPE for assertion on their behalf.

8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a known defensive aggregator like RPX, AST, LOT Network, Unified Patents, or Open Invention Network.

Verdict

Insufficient data. While a repeat correspondent is present, the assignment chain primarily reflects an internal restructuring and a security interest, not a transfer to a known NPE or other strong indicators of an NPE assertion pattern. More information would be needed to determine if the patent is being used in an NPE assertion context.

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