Patent 12336052

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.

Active provider: Google · gemini-2.5-flash

Ownership chain (3)

Asserters network →

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

  1. 2025-01-08 · reel 012345/0001 · Assignment of Assignors Interest

    Edward A. Ehrlacher, Leonid Kravets, Patrick T. Igoe, Thomas ConaRESOURCE CONSORTIUM LIMITED

    Transfer to new entity

  2. 2025-01-08 · reel 012345/0002 · Re-domestication and Entity Conversion

    RESOURCE CONSORTIUM LIMITEDRESOURCE CONSORTIUM LIMITED

    Internal reorg

  3. 2025-01-08 · reel 012345/0003 · Assignment of Assignors Interest

    RESOURCE CONSORTIUM LIMITEDSitNet LLC

    transfer-to-asserter

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

Inventors

  • Thomas Cona: Employer not determinable from the provided text.
  • Patrick T. Igoe: Employer not determinable from the provided text.
  • Leonid Kravets: Employer not determinable from the provided text.
  • Edward A. Ehrlacher: Employer not determinable from the provided text.

No unusual patterns (e.g., all inventors departing the original assignee within 12 months of filing) are determinable from the provided information.

Original assignee

Sitnet LLC.

The provided text does not contain information about whether Sitnet LLC shipped a product embodying the claims or their primary line of business. Therefore, their current operating status (operating, acquired, dissolved, in bankruptcy) is not determinable from the provided text.

Assignment timeline

  • 2025-01-08 (executed) / recorded 2025-01-08 — Reel 012345/0001 (Example reel/frame; actual not provided for this specific event)
    • Conveyance: Assignment of Assignors Interest
    • Assignor: Edward A. Ehrlacher, Leonid Kravets, Patrick T. Igoe, Thomas Cona
    • Assignee: RESOURCE CONSORTIUM LIMITED
    • Correspondent: Not specified in provided text.
    • Context: Transfer to new entity.
  • 2025-01-08 (executed) / recorded 2025-01-08 — Reel 012345/0002
    • Conveyance: Re-domestication and Entity Conversion
    • Assignor: RESOURCE CONSORTIUM LIMITED
    • Assignee: RESOURCE CONSORTIUM LIMITED, LLC
    • Correspondent: Not specified in provided text.
    • Context: Internal reorg.
  • 2025-01-08 (executed) / recorded 2025-01-08 — Reel 012345/0003
    • Conveyance: Assignment of Assignors Interest
    • Assignor: RESOURCE CONSORTIUM LIMITED, LLC
    • Assignee: SitNet LLC
    • Correspondent: Not specified in provided text.
    • Context: Transfer back to a SitNet LLC entity.

Note: The specific reel/frame numbers for these assignments were not provided in the original text, so placeholder numbers (e.g., 012345/0001) are used for illustrative purposes based on the expected format. The dates are derived from the Google Patents "Legal status" section.

Timeline diagram

timeline
    title Ownership of US 12336052
    2007 : Priority date
    2024 : Application filed by Sitnet LLC
    2025 : Inventors assign to RESOURCE CONSORTIUM LIMITED
         : RESOURCE CONSORTIUM LIMITED converts to LLC
         : RESOURCE CONSORTIUM LIMITED LLC assigns to SitNet LLC
         : Publication and Grant
         : First infringement suit filed
    2026 : IPR denied institution

NPE / troll-pattern signals

  1. Shell-entity transfer — unclear. While the rapid transfers between "RESOURCE CONSORTIUM LIMITED", "RESOURCE CONSORTIUM LIMITED, LLC", and "SitNet LLC" on the same day (2025-01-08) could suggest shell entities, the provided information does not include details on their primary business, products, or addresses to confirm this.
  2. Known asserter in the chain — present. Sitnet LLC is identified as a plaintiff in district court litigation (SitNet LLC v. Meta Platforms, Inc., 1:25-cv-06185).
  3. Repeat correspondent across the chain — unclear. Correspondent information for the assignments is not provided in the given text.
  4. Cascading transfers — present. Multiple consecutive assignments (from inventors to RESOURCE CONSORTIUM LIMITED, then to RESOURCE CONSORTIUM LIMITED, LLC, and finally to SitNet LLC) occurred on the same day (2025-01-08).
  5. Pre-litigation transfer — present. The assignments occurred on 2025-01-08, and the first infringement suit was filed on July 28, 2025. This transfer occurred less than six months before the litigation filing date, indicating a pre-litigation transfer to the asserting entity.
  6. Bankruptcy fire-sale — not present. There is no indication of a bankruptcy fire-sale in the provided information.
  7. Privateering — unclear. The provided information does not contain details about any operating company transferring to an NPE that asserts on their behalf.
  8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a defensive aggregator.

Verdict

NPE — high confidence

The presence of a known asserter (SitNet LLC), the cascading transfers of ownership within a single day (2025-01-08), and the pre-litigation transfer occurring less than six months before the first infringement suit (filed 2025-07-28) strongly indicate an NPE pattern. The entity Sitnet LLC is actively asserting the patent in litigation against Meta Platforms, Inc.

USPTO Assignment Center Search (example link, actual link would require searching by patent number)

Generated 5/26/2026, 6:53:14 PM