Patent 7415530

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. 2008-06-25 · recorded 2009-06-03 · reel 022989/0285 · Assignment

    REALTIME DATA, LLCREALTIME DATA, LLC

    Correspondent: JOHN M. D'ANGELO, ESQ. · JOHN M. D'ANGELO

    internal reorg

  2. 2008-08-01 · recorded 2010-09-08 · reel 024479/0001 · Assignment

    REALTIME DATA, LLCREALTIME DATA, LLC

    Correspondent: JOHN M. D'ANGELO, ESQ. · JOHN M. D'ANGELO

    internal reorg

  3. 2011-06-07 · recorded 2012-05-18 · reel 028448/0001 · Assignment

    REALTIME DATA, LLCREALTIME DATA, LLC

    Correspondent: JOHN M. D'ANGELO, ESQ. · JOHN M. D'ANGELO

    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

Realtime Data LLC.
Realtime Data LLC is a research and development company with technology and intellectual property in data compression and acceleration. The company's technology accelerates data storage, retrieval, transmission, and reception. Realtime Data LLC is identified as a patent assertion entity that licenses its patent portfolio to other companies, rather than shipping products embodying the claims. Realtime Data LLC is currently operating and actively engaged in patent litigation.

Assignment timeline

  • 2008-06-25 (executed) / recorded 2009-06-03 — Reel 022989/0285

    • Conveyance: Assignment
    • Assignor: REALTIME DATA LLC
    • Assignee: REALTIME DATA, LLC
    • Correspondent: JOHN M. D'ANGELO, ESQ., JOHN M. D'ANGELO, P.C., 26 BROADWAY, 26TH FLOOR, NEW YORK, NY 10004. This correspondent recurs in this chain.
    • Context: Internal transfer or corrective assignment between entities with slightly different legal names but same beneficial ownership.

  • 2008-08-01 (executed) / recorded 2010-09-08 — Reel 024479/0001

    • Conveyance: Assignment
    • Assignor: REALTIME DATA, LLC
    • Assignee: REALTIME DATA, LLC
    • Correspondent: JOHN M. D'ANGELO, ESQ., JOHN M. D'ANGELO, P.C., 26 BROADWAY, 26TH FLOOR, NEW YORK, NY 10004. This correspondent recurs in this chain.
    • Context: Internal transfer or corrective assignment.

  • 2011-06-07 (executed) / recorded 2012-05-18 — Reel 028448/0001

    • Conveyance: Assignment
    • Assignor: REALTIME DATA, LLC
    • Assignee: REALTIME DATA, LLC
    • Correspondent: JOHN M. D'ANGELO, ESQ., JOHN M. D'ANGELO, P.C., 26 BROADWAY, 26TH FLOOR, NEW YORK, NY 10004. This correspondent recurs in this chain.
    • Context: Internal transfer or corrective assignment.

Timeline diagram

timeline
    title Ownership of US 7415530
    2006 : Patent application filed
    2008 : Issued to Realtime Data LLC
    2009 : Assigned to Realtime Data LLC Reel 022989/0285
    2010 : Assigned to Realtime Data LLC Reel 024479/0001
         : First infringement suit filed (est.)
    2012 : Assigned to Realtime Data LLC Reel 028448/0001

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The patent has remained with Realtime Data LLC, which, while identified as a patent assertion entity, is also the original assignee and inventor-owned. The internal assignments do not change beneficial ownership.
  2. Known asserter in the chain — Present. Realtime Data LLC is explicitly identified as a "patent assertion entity" (NPE).
  3. Repeat correspondent across the chain — Present. John M. D'Angelo, Esq., of JOHN M. D'ANGELO, P.C., is listed as the correspondent for all three recorded assignments (Reel 022989/0285, Reel 024479/0001, and Reel 028448/0001).
  4. Cascading transfers — Not present. The assignments listed are internal and spaced over several years, not rapid transfers between different entities.
  5. Pre-litigation transfer — Unclear. The earliest identified litigation for this patent family was filed in August 2010 (Darts-ip) or October 2010 (Unified Patents case 6:10-cv-00493). The last recorded assignment (Reel 024479/0001) before that date was recorded on 2010-09-08 (executed 2008-08-01), which is within 2 months of the earliest litigation date. However, since the assignment was internal (Realtime Data, LLC to Realtime Data, LLC), it's less indicative of a transfer to enable assertion, but rather an internal cleanup.
  6. Bankruptcy fire-sale — Not present. No evidence of Realtime Data LLC undergoing bankruptcy proceedings.
  7. Privateering — Not present. No information suggests an operating company transferred the patent to Realtime Data LLC for assertion on its behalf.
  8. Defensive aggregator (anti-NPE) — Not present. The patent is currently held by Realtime Data LLC, which is an active asserter, not a defensive aggregator.

Verdict

NPE — high confidence
Realtime Data LLC is explicitly identified as a patent assertion entity, and has been involved in extensive litigation asserting this patent against numerous companies. The presence of a repeat correspondent across all recorded assignments further indicates a consistent operational pattern typical of organized assertion campaigns.
USPTO Assignment Center Search for US7415530

Generated 5/29/2026, 8:58:13 PM