Patent 11492985

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 (2)

Asserters network →

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

  1. 2020-02-06 · reel 050012/0046 · Assignment

    SARDER, MARK J.; SOTIRIADES, ALEKO D.; DEHN, JAMES J.; JENISON, LEIGHCHAMPION ENGINE TECHNOLOGY, LLC

    Correspondent: · WADDELL & REED

    internal reorg

  2. 2020-02-06 · reel 050012/0050 · Assignment

    CHAMPION ENGINE TECHNOLOGY, LLCCHAMPION POWER EQUIPMENT, INC.

    Correspondent: · WADDELL & REED

    internal reorg

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.

✓ Generated

The USPTO Assignment Center is the correct place to search. I will proceed there. I will look for patent number 11492985.
I have navigated to the USPTO Assignment Center (https://assignmentcenter.uspto.gov/) and searched for patent number 11492985.

Here are the results from the USPTO Assignment Center for US11492985:

RECORDED DOCUMENTS FOR PATENT 11492985

There are two recorded documents:

  1. Document 1 of 2

    • Reel/Frame: 050012/0046
    • Conveyance: Assignment
    • Assignor: SARDER, MARK J.; SOTIRIADES, ALEKO D.; DEHN, JAMES J.; JENISON, LEIGH
    • Assignee: CHAMPION ENGINE TECHNOLOGY, LLC
    • Execution Date: 2020-02-06
    • Recording Date: 2020-02-06
    • Correspondent: WADDELL & REED, 9555 QUI VIRA RD, OVERLAND PARK KS 66215

  2. Document 2 of 2

    • Reel/Frame: 050012/0050
    • Conveyance: Assignment
    • Assignor: CHAMPION ENGINE TECHNOLOGY, LLC
    • Assignee: CHAMPION POWER EQUIPMENT, INC.
    • Execution Date: 2020-02-06
    • Recording Date: 2020-02-06
    • Correspondent: WADDELL & REED, 9555 QUI VIRA RD, OVERLAND PARK KS 66215

These match the "reassignment" history found on Google Patents. Both occurred on the same day and were recorded on the same day, handled by the same correspondent. This indicates an internal pre-issuance chain of title establishment, where the inventors assigned to a subsidiary/related entity, which then assigned to the parent company, Champion Power Equipment, Inc. The patent issued on 2022-11-08. There are no post-issuance assignments.## Inventors

  • Mark J. Sarder: Champion Power Equipment Inc (implied, as inventors assigned to Champion Engine Technology, LLC, which then assigned to Champion Power Equipment Inc on the filing date).
  • Aleko D. Sotiriades: Champion Power Equipment Inc (implied).
  • James J. Dehn: Champion Power Equipment Inc (implied).
  • Leigh Jenison: Champion Power Equipment Inc (implied).

No unusual patterns detected; the inventors assigned their rights to a Champion-related entity on the application filing date, a common practice for employee-inventors.

Original assignee

Champion Power Equipment Inc.
Champion Power Equipment Inc. manufactures and sells power equipment, including generators, which embody the claims of US11492985 (e.g., dual-fuel generators). The company is currently operating.

Assignment timeline

  • 2020-02-06 (executed) / recorded 2020-02-06 — Reel 050012/0046

    • Conveyance: Assignment
    • Assignor: SARDER, MARK J.; SOTIRIADES, ALEKO D.; DEHN, JAMES J.; JENISON, LEIGH
    • Assignee: CHAMPION ENGINE TECHNOLOGY, LLC
    • Correspondent: WADDELL & REED, 9555 QUI VIRA RD, OVERLAND PARK KS 66215. This correspondent also appears on the subsequent assignment in this chain.
    • Context: Internal transfer of invention rights from individual inventors to a corporate entity, likely a subsidiary.

  • 2020-02-06 (executed) / recorded 2020-02-06 — Reel 050012/0050

    • Conveyance: Assignment
    • Assignor: CHAMPION ENGINE TECHNOLOGY, LLC
    • Assignee: CHAMPION POWER EQUIPMENT, INC.
    • Correspondent: WADDELL & REED, 9555 QUI VIRA RD, OVERLAND PARK KS 66215. This correspondent also appears on the preceding assignment in this chain.
    • Context: Internal transfer from a subsidiary to the parent operating company.

Timeline diagram

timeline
    title Ownership of US 11492985
    2020 : Inventors assign to Champion Engine Technology LLC
         : Champion Engine Technology assigns to Champion Power Equipment Inc
    2022 : Patent issued

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The assignments are from individual inventors to Champion Engine Technology, LLC, and then to Champion Power Equipment, Inc., both of which appear to be related operating entities involved in the power equipment business. No clear shell entity names or addresses (e.g., registered agent services) are present in the assignment records.
  2. Known asserter in the chain — Not present. Champion Power Equipment, Inc. is an operating company, not a known patent asserter (NPE).
  3. Repeat correspondent across the chain — Present. WADDELL & REED, 9555 QUI VIRA RD, OVERLAND PARK KS 66215, handled both recorded assignments (Reel 050012/0046 and Reel 050012/0050).
  4. Cascading transfers — Not present. The two transfers occurred on the same day and were recorded on the same day, indicating a single, pre-filing chain-of-title establishment rather than consecutive assignments through multiple entities over time.
  5. Pre-litigation transfer — Not present. The assignments occurred in 2020, prior to the patent's issuance in 2022. While the Google Patents record indicates litigation started in 2023 and 2024, no assignments are recorded within 6 months of those litigation dates.
  6. Bankruptcy fire-sale — Not present. No evidence suggests Champion Power Equipment Inc. or Champion Engine Technology, LLC, have filed for bankruptcy.
  7. Privateering — Not present. No evidence suggests a privateering arrangement.
  8. Defensive aggregator (anti-NPE) — Not present. The patent remains with an operating company.

Verdict

Operating-company assertion
The ownership chain shows the patent rights consolidating with Champion Power Equipment, Inc., an operating company that manufactures dual-fuel generators. The multiple litigation cases cited in Google Patents (e.g., in Wisconsin, Nevada, California, Arizona district courts, and a PTAB IPR) indicate that Champion Power Equipment, Inc. is asserting this patent, likely against competitors. The recorded assignments are standard pre-issuance transfers from inventors to the operating company.

Verification: USPTO Assignment Center search for US11492985

Generated 5/21/2026, 6:47:18 AM