Patent 11550512

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. 2022-10-31 · reel 059535/0628 · Assignment

    BISMUTH, ROBERT; STENGLE, MIKEFERMAT INTERNATIONAL, INC.

    Correspondent: · PATTON BOGGS

    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.

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Inventors

Original assignee

Fermat International Inc. is the original assignee. It is unclear from the patent text or publicly available information whether Fermat International Inc. ships a product embodying the claims. The primary line of business for Fermat International Inc. is not explicitly stated in the patent. Its current status appears to be operating, as it is listed as the current assignee.

Assignment timeline

  • 2022-10-31 (executed) / recorded 2022-10-31 — Reel 059535/0628
    • Conveyance: Assignment
    • Assignor: BISMUTH, ROBERT; STENGLE, MIKE
    • Assignee: Fermat International, Inc.
    • Correspondent: PATTON BOGGS LLP. This correspondent appears multiple times in this chain.
    • Context: Internal transfer of inventorship to the original assignee.

Timeline diagram

timeline
    title Ownership of US 11550512
    2019 : Priority date
    2022 : Filed by Fermat International Inc
         : Inventors assigned to Fermat Intl Inc
    2023 : Issued

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The initial assignment is from the inventors to Fermat International Inc., which is also the original assignee. There is no evidence in the provided information to suggest Fermat International Inc. is a shell entity.
  2. Known asserter in the chain — not present. Neither Fermat International Inc. nor the inventors are listed as known asserters in the provided context or common NPE lists.
  3. Repeat correspondent across the chain — present. PATTON BOGGS LLP is listed as the correspondent for the 2022-10-31 assignment (Reel 059535/0628). This is the only recorded assignment in the provided data.
  4. Cascading transfers — not present. There is only one recorded assignment in the provided information.
  5. Pre-litigation transfer — unclear. While the Google Patents page indicates "Family has litigation," the specific filing date of the first infringement suit is 2026-01-14 and the assignment (Reel 059535/0628) was recorded on 2022-10-31, which is more than six months prior. However, the Unified Patents link refers to a case filed in the Texas Western District Court with case number 7:26-cv-00011.
  6. Bankruptcy fire-sale — not present. There is no indication of bankruptcy proceedings for Fermat International Inc.
  7. Privateering — not present. No evidence of privateering has been found in the provided information.
  8. Defensive aggregator (anti-NPE) — not present. The chain does not end at a known defensive aggregator.

Verdict

Insufficient data. While the patent family has litigation, there is only one assignment recorded, which is the initial transfer from the inventors to the original assignee (Reel 059535/0628). This single assignment does not provide enough information to definitively classify the patent's ownership as an NPE, operating-company assertion, or defensive. Further investigation into Fermat International Inc.'s business operations and the nature of the litigation would be required for a more confident verdict.
USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/

Generated 5/26/2026, 12:46:25 AM