Patent 11275092

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 (1)

Asserters network →

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

  1. 2019-08-01 · reel 050478/0748 · Assignment

    BLENNOW, KAJ; RANDALL, JEFFREY D.; WILSON, DAVID; ZETTERBERG, JOHN HENRIKQuanterix Corporation

    Correspondent: KEVIN J. MCNEELY · MINTZ, LEVIN, COHN, FERRIS, GLOVSKY AND POPEO

    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

Inventors

  • David Wilson (Intellectual Ventures Lab at time of filing, then Quanterix Corp)
  • John Henrik Zetterberg (Employer not determinable from available information)
  • Kaj Blennow (Employer not determinable from available information)
  • Jeffrey D. Randall (Employer not determinable from available information)

Original assignee

The original assignee named on the issued patent is Quanterix Corp. Quanterix Corp is a publicly traded life sciences company that develops ultra-sensitive digital immunoassay platforms, instruments, consumables, and services for life sciences research and diagnostics, particularly for biomarker detection in neurology, oncology, immunology, and cardiology. They commercialize assays for various protein biomarkers, including neurological biomarkers like Tau. Quanterix Corp is currently operating.

Assignment timeline

  • 2019-08-01 (executed) / recorded 2019-08-01 — Reel 050478/0748
    • Conveyance: Assignment
    • Assignor: BLENNOW, KAJ; RANDALL, JEFFREY D.; WILSON, DAVID; ZETTERBERG, JOHN HENRIK
    • Assignee: Quanterix Corporation
    • Correspondent: KEVIN J. MCNEELY, ESQ., MINTZ, LEVIN, COHN, FERRIS, GLOVSKY AND POPEO, P.C., ONE FINANCIAL CENTER, BOSTON, MA 02111-2621
    • Context: Transfer from individual inventors to corporate assignee.

Timeline diagram

timeline
    title Ownership of US 11275092
    2019 : Inventors assigned to Quanterix Corp
    2022 : Patent issued

NPE / troll-pattern signals

  1. Shell-entity transfer - Not present. The only recorded assignment is from the inventors to Quanterix Corporation, an operating company.
  2. Known asserter in the chain - Not present. Quanterix Corporation is not identified as a known patent asserter or NPE. Known NPEs like Acacia Research Corp, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid / Conversant (not explicitly detailed in search results but generally known as an NPE), Vringo, Pendrell, Innovatio IP Ventures, MPHJ Technology, Lumen View Technology, Round Rock Research, Document Generation Corp, or Erich Spangenberg entities are not present in the assignment chain.
  3. Repeat correspondent across the chain - Not present. There is only one assignment recorded, so no recurrence of a correspondent can be observed in this chain.
  4. Cascading transfers - Not present. Only one assignment is recorded.
  5. Pre-litigation transfer - Not present. There is no indication of litigation immediately following the assignment to Quanterix Corporation.
  6. Bankruptcy fire-sale - Not present. Quanterix Corp is an active, publicly traded company.
  7. Privateering - Not present. There is no evidence to suggest this.
  8. Defensive aggregator (anti-NPE) - Not present. The patent is currently assigned to Quanterix Corp.

Verdict

Insufficient data. Only one assignment from the inventors to the original assignee, Quanterix Corporation, is recorded (Reel 050478/0748, recorded 2019-08-01). This single transaction is typical for initial patent ownership and does not provide enough evidence to identify any NPE or patent-troll patterns.

Verification: https://assignmentcenter.uspto.gov/

Generated 5/15/2026, 6:47:59 PM