Patent 8860337

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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Ownership chain (1)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

  1. 2012-02-02 · reel 027663/0762 · Assignment

    TOMPKINS, GLEN, ELENGA, ROBIN, PEPIN, BRIAN MARCRESONANT SYSTEMS, INC.

    Correspondent: KENNETH B. STOKES · STOKES LAW GROUP

    original assignment

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

  • Robin Elenga
  • Brian Marc Pepin
  • Glen Tompkins

No information is readily available in the patent document to determine the inventors' employers at the time of filing, nor are there any unusual patterns immediately apparent regarding their departure from the original assignee.

Original assignee

The original assignee on the issued patent is Resonant Systems Inc. The patent itself describes the technology as linear vibration modules and linear-resonant vibration modules for incorporation into various electromechanical devices and systems to produce vibrations. This suggests Resonant Systems Inc. was engaged in developing or manufacturing such components.

Resonant Systems Inc. (note the spelling distinction from "Resonance Systems Inc." in some search results) appears to be engaged in providing high-tech hardware and software solutions for machinery health monitoring and analysis, specifically for reciprocating and rotating equipment across various industries like Oil and Gas, Transportation, and Power Generation. Their products include portable kits and analyzers that collect data such as vibration, pressure, and temperature. This suggests they ship products embodying the claims related to vibration modules.

There appears to be another company named "Resonant Inc." which was acquired by Murata Manufacturing Co., Ltd. in March 2022 and focuses on RF filter solutions for mobile devices and 5G networks. However, the patent in question, US8860337, was assigned to "RESONANT SYSTEMS, INC." on February 2, 2012, before this acquisition, and the description of the patent's technology aligns with the "Resonance Systems Inc." focused on industrial vibration monitoring. Therefore, the information about "Resonant Inc." (the Murata subsidiary) is likely not directly relevant to the original assignee of this specific patent.

As of May 2026, Resonance Systems, Inc. appears to be an active company, offering products and services for machinery health monitoring and analysis.

Assignment timeline

  • 2012-02-02 (executed) / recorded 2012-02-02 — Reel 027663/0762
    • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
    • Assignor: TOMPKINS, GLEN, ELENGA, ROBIN, PEPIN, BRIAN MARC
    • Assignee: RESONANT SYSTEMS, INC.
    • Correspondent: KENNETH B. STOKES, STOKES LAW GROUP, PLLC, 3901 SOUTHWEST ARTIST ROAD, VASHON, WA 98070
    • Context: Original assignment from inventors to the company

The USPTO Assignment Center search results show only the initial assignment from the inventors to Resonant Systems, Inc. There are no further assignments recorded for US patent 8860337 in the USPTO Assignment Center.

Timeline diagram

timeline
    title Ownership of US 8860337
    2009 : Priority date
    2012 : Filed by Resonant Systems Inc
         : Assigned to Resonant Systems Inc
    2014 : Granted to Resonant Systems Inc
    2026 : Family has litigation

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The only recorded assignment is from the individual inventors to Resonant Systems, Inc., which appears to be an operating company.
  2. Known asserter in the chain — Not present. Resonant Systems, Inc. is not identified as a known NPE on public lists.
  3. Repeat correspondent across the chain — Not present. There is only one recorded assignment, so no recurrence of a correspondent. The correspondent, KENNETH B. STOKES of STOKES LAW GROUP, PLLC, handled the initial assignment.
  4. Cascading transfers — Not present. Only one assignment is recorded.
  5. Pre-litigation transfer — Unclear. While there is ongoing litigation, there are no recorded transfers subsequent to the initial assignment from the inventors to Resonant Systems, Inc. Therefore, we cannot determine if any transfers were pre-litigation.
  6. Bankruptcy fire-sale — Not present. No information suggests Resonant Systems, Inc. has filed for bankruptcy or sold patents in such proceedings.
  7. Privateering — Not present. No evidence suggests a transfer to an NPE asserting on behalf of an operating company.
  8. Defensive aggregator (anti-NPE) — Not present. The patent has not been assigned to a defensive aggregator.

Verdict

Insufficient data. Only one assignment from the inventors to the original assignee is recorded in the USPTO Assignment Center. While there is ongoing litigation related to this patent, the assignment records do not provide enough information to identify any NPE or troll patterns.

Generated 5/18/2026, 6:46:46 AM