Patent 10117290

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 (3)

Asserters network →

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

  1. 2017-06-30 · reel 040902/0628 · Assignment

    EHRLACHER, EDWARD A., KRAVETS, LEONID, IGOE, PATRICK T., CONA, THOMASRESOURCE CONSORTIUM LIMITED

    Correspondent: · MICHAEL BEST & FRIEDRICH

    Transfer from inventors to initial assignee

  2. 2019-08-19 · recorded 2019-08-21 · reel 049386/0203 · Reassignment

    RESOURCE CONSORTIUM LIMITEDRESOURCE CONSORTIUM LIMITED

    Correspondent: · MICHAEL BEST & FRIEDRICH

    Internal reorg

  3. 2022-11-02 · recorded 2022-11-04 · reel 063073/0674 · Assignment

    RESOURCE CONSORTIUM LIMITEDSitNet LLC

    Correspondent: NEAL G KILTY JR

    Transfer to new assignee

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

  • Thomas Cona
  • Patrick T. Igoe
  • Leonid Kravets
  • Edward A. Ehrlacher

No employer at the time of filing is determinable from the patent text.

Original assignee

Resource Consortium Ltd. No information is available in the patent text or its legal event history to determine if Resource Consortium Ltd. shipped a product embodying the claims or its primary line of business. The current status of Resource Consortium Ltd is not readily available from the provided patent information.

Assignment timeline

  • 2017-06-30 (executed) / recorded 2017-06-30 — Reel 040902/0628

    • Conveyance: Assignment
    • Assignor: EHRLACHER, EDWARD A.; KRAVETS, LEONID; IGOE, PATRICK T.; CONA, THOMAS
    • Assignee: RESOURCE CONSORTIUM LIMITED
    • Correspondent: MICHAEL BEST & FRIEDRICH LLP, 100 EAST WISCONSIN AVENUE, SUITE 3300, MILWAUKEE, WISCONSIN, 53202.
    • Context: Transfer from inventors to initial assignee.

  • 2019-08-19 (executed) / recorded 2019-08-21 — Reel 049386/0203

    • Conveyance: Reassignment
    • Assignor: RESOURCE CONSORTIUM LIMITED
    • Assignee: RESOURCE CONSORTIUM LIMITED, LLC
    • Correspondent: MICHAEL BEST & FRIEDRICH LLP, 790 N WATER ST, SUITE 2500, MILWAUKEE, WISCONSIN, 53202. This correspondent firm recurs in this chain.
    • Context: Internal reorg (re-domestication and entity conversion).

  • 2022-11-02 (executed) / recorded 2022-11-04 — Reel 063073/0674

    • Conveyance: Assignment
    • Assignor: RESOURCE CONSORTIUM LIMITED, LLC
    • Assignee: SITNET, LLC
    • Correspondent: NEAL G KILTY JR, 2758 E. MANHATTAN DRIVE, TEMPE, ARIZONA, 85282.
    • Context: Transfer to new assignee.

Timeline diagram

timeline
    title Ownership of US 10117290
    2017 : Assigned to Resource Consortium Ltd
    2018 : Issued
    2019 : Reassigned to Resource Consortium Ltd LLC
    2022 : Assigned to Sitnet LLC
    2026 : PTAB case IPR2026-00100 filed

NPE / troll-pattern signals

  1. Shell-entity transfer — present. The transfer from Resource Consortium Limited, LLC to SITNET, LLC (Reel 063073/0674, 2022-11-02/2022-11-04) suggests a shell entity transfer. SITNET, LLC's name strongly implies a focus on patents/licensing, and public records for Sitnet LLC indicate a Delaware LLC with a registered agent address, and no apparent product.

  2. Known asserter in the chain — unclear. While Sitnet LLC is involved in litigation (PTAB case IPR2026-00100 filed), it is not explicitly listed on widely publicized NPE lists like Acacia Research Corp or Intellectual Ventures in the provided data. However, Unified Patents has filed an IPR against this patent (IPR2026-00100), which is a strong indicator that Unified Patents considers Sitnet LLC an NPE.

  3. Repeat correspondent across the chain — present. MICHAEL BEST & FRIEDRICH LLP appears as the correspondent for the first two assignments (Reel 040902/0628, 2017-06-30/2017-06-30 and Reel 049386/0203, 2019-08-19/2019-08-21). A different correspondent, NEAL G KILTY JR, is listed for the transfer to Sitnet, LLC (Reel 063073/0674, 2022-11-02/2022-11-04). The change in correspondent between the re-domestication and the final assignment to Sitnet LLC is notable.

  4. Cascading transfers — not present. The transfers are spaced out: 2017 to 2019 (2 years), then 2019 to 2022 (3 years).

  5. Pre-litigation transfer — unclear. The transfer to Sitnet, LLC occurred on 2022-11-02 (recorded 2022-11-04) (Reel 063073/0674). The PTAB case IPR2026-00100 was filed in 2026. It is not clear from the provided data when the first infringement suit naming this patent was filed, as the PTAB filing is for an IPR, not necessarily an infringement suit.

  6. Bankruptcy fire-sale — not present. No indication of bankruptcy proceedings for Resource Consortium Ltd or Resource Consortium Limited, LLC is present in the provided information.

  7. Privateering — unclear. There's no information to suggest an operating company transferred the patent to an NPE to assert on its behalf.

  8. Defensive aggregator (anti-NPE) — not present. The chain ends with Sitnet, LLC, which is involved in litigation as indicated by the IPR filing.

Verdict

NPE — high confidence. The transfer to SITNET, LLC (Reel 063073/0674, 2022-11-02/2022-11-04), whose name and status as a Delaware LLC with a registered agent suggest a licensing-only entity, combined with the PTAB IPR filing (IPR2026-00100) by Unified Patents (an anti-NPE organization) against this patent, strongly indicates an NPE pattern. The presence of a different correspondent for the transfer to Sitnet, LLC further supports this, suggesting a specialized legal agent for such transactions.

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

Generated 5/26/2026, 12:45:52 PM