Patent 11446477

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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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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Inventors

The named inventors for US Patent 11446477 are Roger Ignon, Scott Mallett, Abraham Solano, and William Cohen. All four inventors assigned their interest in the patent to Edge Systems Corporation on August 12, 2022. Edge Systems Corporation later underwent a series of name changes, ultimately becoming Hydrafacial LLC, the current assignee. This inventor assignment to what became the operating company is a standard practice and does not indicate unusual patterns or departures from the original assignee.

Original assignee

The original assignee, as identified on the issued patent, is Hydrafacial LLC. Hydrafacial LLC, and its predecessors Edge Systems LLC and Edge Systems Corporation, are known for developing and marketing aesthetic skincare devices and products, notably the HydraFacial system. The company ships products embodying the claims of this patent, such as the devices and methods for treating skin using fluid delivery and exfoliation tips. Hydrafacial LLC is currently an operating company, actively engaged in its primary line of business, as evidenced by its ongoing commercial activities and patent litigation.

Assignment timeline

  • 2020-04-13 (executed) / recorded 2020-04-13

    • Conveyance: Security Interest
    • Assignor: EDGE SYSTEMS LLC
    • Assignee: SILVER POINT FINANCE, LLC, AS AGENT
    • Correspondent: Not available from provided data.
    • Context: Edge Systems LLC granted a security interest in its patents to Silver Point Finance, LLC as part of a financing agreement.

  • 2021-05-11 (executed) / recorded 2021-05-11

    • Conveyance: Release of Security Interest
    • Assignor: SILVER POINT FINANCE, LLC
    • Assignee: EDGE SYSTEMS INTERMEDIATE, LLC, EDGE SYSTEMS LLC
    • Correspondent: Not available from provided data.
    • Context: Silver Point Finance, LLC released its security interest, likely indicating a change in financing or repayment.

  • 2022-01-03 (executed) / recorded 2022-01-03

    • Conveyance: Security Interest
    • Assignor: EDGE SYSTEMS LLC
    • Assignee: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
    • Correspondent: Not available from provided data.
    • Context: Edge Systems LLC granted a new security interest in its patents to JPMorgan Chase Bank, N.A.

  • 2022-08-12 (executed) / recorded 2022-08-12

    • Conveyance: Assignment of Assignors Interest
    • Assignor: COHEN, WILLIAM, SOLANO, ABRAHAM, IGNON, ROGER, MALLETT, SCOTT
    • Assignee: EDGE SYSTEMS CORPORATION
    • Correspondent: Not available from provided data.
    • Context: The inventors formally assigned their rights to the corporate entity, Edge Systems Corporation.

  • 2022-08-15 (executed) / recorded 2022-08-15

    • Conveyance: Change of Name
    • Assignor: EDGE SYSTEMS CORPORATION
    • Assignee: EDGE SYSTEMS LLC
    • Correspondent: Not available from provided data.
    • Context: Edge Systems Corporation changed its legal name to Edge Systems LLC.

  • 2022-08-16 (executed) / recorded 2022-08-16

    • Conveyance: Change of Name
    • Assignor: EDGE SYSTEMS LLC
    • Assignee: HYDRAFACIAL LLC
    • Correspondent: Not available from provided data.
    • Context: Edge Systems LLC changed its legal name to Hydrafacial LLC.

  • 2024-08-06 (executed) / recorded 2024-08-06 — Reel 58526/0897

    • Conveyance: Release of Security Interest
    • Assignor: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
    • Assignee: HYDRAFACIAL LLC (FORMERLY KNOWN AS EDGE SYSTEMS LLC)
    • Correspondent: Not available from provided data.
    • Context: JPMorgan Chase Bank, N.A. released the security interest previously granted by Hydrafacial LLC.

  • 2025-05-30 (executed) / recorded 2025-05-30

    • Conveyance: Patent Security Agreement
    • Assignor: HYDRAFACIAL LLC
    • Assignee: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
    • Correspondent: Not available from provided data.
    • Context: Hydrafacial LLC granted a new patent security agreement to U.S. Bank Trust Company, National Association.

Timeline diagram

timeline
    title Ownership of US 11446477
    2005 : Priority date
    2019 : Application filed
    2020 : Security interest to Silver Point
    2021 : Security interest released
    2022 : Security interest to JPMorgan
         : Inventors assign to Edge Sys Corp
         : Edge Sys Corp becomes Edge Sys LLC
         : Edge Sys LLC becomes Hydrafacial LLC
         : Patent issued
    2024 : JPMorgan security released
         : Litigation filed
    2025 : Security interest to US Bank Trust
         : PTAB case IPR2025-00453
         : PTAB case IPR2025-01217
    2026 : Anticipated expiration

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The ownership of the patent has remained within the corporate family of Hydrafacial LLC, an operating company. The recorded events are primarily security interests for financing and internal corporate name changes, not transfers to licensing-only entities.

  2. Known asserter in the chain — Not present. None of the entities listed in the assignment chain (Edge Systems LLC, Edge Systems Corporation, Hydrafacial LLC, Silver Point Finance, LLC, JPMorgan Chase Bank, N.A., U.S. Bank Trust Company, National Association) are identified as known patent assertion entities from established lists.

  3. Repeat correspondent across the chain — Unclear. The correspondent information (attorney name, firm, address) for the recorded assignments is not available from the provided patent data. Therefore, it is not possible to determine if a repeat correspondent appears in the chain.

  4. Cascading transfers — Not present. Although there were several events in 2022 (inventor assignment, two name changes), these represent a single chain of title from the inventors to the operating company, followed by corporate identity updates. They are not multiple, consecutive transfers between unrelated shell LLCs in a short timeframe for assertion purposes.

  5. Pre-litigation transfer — Not present. The core assignment from the inventors to the operating entity occurred on 2022-08-12, prior to the patent's issuance (2022-09-20) and well before the earliest recorded litigation in 2024. The other transfers are security interests or name changes and do not indicate a transfer specifically enabling litigation.

  6. Bankruptcy fire-sale — Not present. There is no indication in the provided assignment record that the original assignee or its successors underwent bankruptcy proceedings that led to the sale of this patent.

  7. Privateering — Unclear. The provided data does not contain information typically found in SEC filings or investigative reports that would indicate a privateering arrangement where an operating company transfers a patent to an NPE to assert on its behalf.

  8. Defensive aggregator (anti-NPE) — Not present. The patent is currently held by Hydrafacial LLC, an operating company, which is involved in asserting the patent through litigation, rather than being held by a defensive aggregator.

Verdict

Operating-company assertion.
The assignment record for US Patent 11446477 demonstrates that the patent has remained within the direct corporate lineage of Hydrafacial LLC (including its prior names, Edge Systems LLC and Edge Systems Corporation) since the inventors' assignment on 2022-08-12, which occurred before the patent's grant. The other recorded events are security interests related to corporate financing or official name changes. Hydrafacial LLC is an operating company that markets products embodying the patent, and its involvement in patent litigation further confirms its role as an asserting operating company.

Link to USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/patent/index.html

Generated 5/19/2026, 6:48:49 AM