Assignment history

Inventors

The sole named inventor for US Patent 11227303 is Wendell D. Brown. The patent information indicates the original assignee was "Individual," and a subsequent assignment shows the patent transferring from "BROWN, WENDELL D." This suggests that Wendell D. Brown was an individual inventor who initially held ownership of the patent upon its grant, rather than being employed by a specific entity in relation to this patent at the time of filing.

Original assignee

The original assignee of record on the issued patent was Wendell D. Brown, the individual inventor. It is unclear whether Wendell D. Brown, as an individual, shipped a product embodying the claims of the patent. His primary line of business for this patent is that of an individual inventor. As an individual, his current status is not that of an operating company.

Assignment timeline

• 2024-02-26 (executed) / recorded 2024-02-26 — Reel 057406/0125

  • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
  • Assignor: BROWN, WENDELL D.
  • Assignee: VUSURA TECHNOLOGY LLC
  • Correspondent: SCHOX, PATRICK & CHING, LLP, 500 THIRD STREET, SUITE 510, SAN FRANCISCO, CA 94107. This correspondent also handled the subsequent security interest filing for Vusura Technology LLC.
  • Context: Transfer of patent ownership from the individual inventor to an LLC.

• 2025-07-29 (executed) / recorded 2025-07-29 — Reel 057406/0126

  • Conveyance: SECURITY INTEREST
  • Assignor: VUSURA TECHNOLOGY LLC
  • Assignee: PLF 2025-A LP
  • Correspondent: SCHOX, PATRICK & CHING, LLP, 500 THIRD STREET, SUITE 510, SAN FRANCISCO, CA 94107. This correspondent also handled the prior assignment to Vusura Technology LLC.
  • Context: Securitization or financing arrangement involving the patent.

Timeline diagram

timeline
    title Ownership of US 11227303
    2009 : Priority Date
    2019 : Application filed
    2022 : Patent issued
    2024 : Assigned to Vusura Technology LLC
    2025 : Security Interest to PLF 2025-A LP

NPE / troll-pattern signals

1. Shell-entity transfer — Present. The patent was assigned from individual inventor Wendell D. Brown to VUSURA TECHNOLOGY LLC on 2024-02-26 (Reel 057406/0125). Vusura Technology LLC is a common naming convention for a licensing or asserting entity, and public records indicate it has commenced litigation, including the present patent against Cisco Systems, Inc..
2. Known asserter in the chain — Present. Vusura Technology LLC is the current assignee and has been identified by RPX Corp. as a plaintiff in a new campaign over contact center systems, noting that it is backed by a funder linked to several other plaintiffs, which is characteristic of a funded plaintiff or NPE.
3. Repeat correspondent across the chain — Present. The law firm SCHOX, PATRICK & CHING, LLP is listed as the correspondent for both the assignment from Wendell D. Brown to Vusura Technology LLC (Reel 057406/0125, dated 2024-02-26) and the security interest granted by Vusura Technology LLC to PLF 2025-A LP (Reel 057406/0126, dated 2025-07-29).
4. Cascading transfers — Not Present. The assignment chain consists of two transactions over approximately 18 months, which does not constitute multiple consecutive assignments through chained LLCs in a short timeframe.
5. Pre-litigation transfer — Not Present. The assignment to Vusura Technology LLC occurred on 2024-02-26 (Reel 057406/0125). The first known litigation against Cisco Systems, Inc. (case 2:25-cv-00871) was filed on August 25, 2025, which is approximately 18 months after the assignment, falling outside the typical 6-month pre-litigation window.
6. Bankruptcy fire-sale — Not Present. There is no evidence in the provided information or search results to suggest a bankruptcy fire-sale.
7. Privateering — Unclear. The patent was transferred from an individual inventor, not an operating company, so this specific pattern is not directly applicable.
8. Defensive aggregator (anti-NPE) — Not Present. The current assignee is Vusura Technology LLC, which is actively asserting the patent in litigation, not a defensive aggregator.

Verdict

NPE — high confidence. This verdict is supported by the transfer of the patent from an individual inventor to Vusura Technology LLC, a shell-like entity (Reel 057406/0125, dated 2024-02-26). Furthermore, Vusura Technology LLC has been identified by RPX Corp. as a funded plaintiff involved in patent litigation campaigns. The recurrence of the same correspondent across multiple transactions in the chain also indicates a consistent legal strategy often associated with NPEs.

USPTO Patent Assignment Search for 11227303