Patent 7846728

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. 2009-09-01 · reel 023178/0623 · Assignment

    Royal Vista Capital LLCBioStruxs LLC

    Transfer of patent ownership, returning to the original assignee listed on the patent.

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

  • Mai Nguyen Brooks (Employer not specified in patent text at time of filing)
  • James P Watson (Employer not specified in patent text at time of filing)

Original assignee

The original assignee on the issued patent US7846728 is BioStruxs LLC. The patent itself describes "a novel method for producing tissue or organ in a mammal by implanting in vivo a novel three dimensional biodegradable scaffold" and mentions applications like "autologous breast implant engineering" and "autologous long bone engineering." It is unclear from the patent text or general web searches whether BioStruxs LLC shipped a product embodying the claims. The current status of BioStruxs LLC is unclear from readily available public information.

Assignment timeline

  • 2007-10-08 (executed) / recorded 2007-10-12 — Reel 020044/0838

    • Conveyance: Assignment
    • Assignor: Brooks, Mai Nguyen; Watson, James P
    • Assignee: BCN Biosciences LLC
    • Correspondent: Not specified in the provided patent text.
    • Context: Transfer of inventors' interest to a new entity.

  • 2008-09-26 (executed) / recorded 2008-10-10 — Reel 021678/0919

    • Conveyance: Assignment
    • Assignor: BCN Biosciences LLC
    • Assignee: Royal Vista Capital LLC
    • Correspondent: Not specified in the provided patent text.
    • Context: Transfer of patent ownership between entities.

  • 2009-09-01 (executed) / recorded 2009-09-01 — Reel 023178/0623

    • Conveyance: Assignment
    • Assignor: Royal Vista Capital LLC
    • Assignee: BioStruxs LLC
    • Correspondent: Not specified in the provided patent text.
    • Context: Transfer of patent ownership, returning to the original assignee listed on the patent.

Timeline diagram

timeline
    title Ownership of US 7846728
    2007 : Inventors assigned to BCN Biosciences LLC
    2008 : BCN Biosciences assigned to Royal Vista Capital LLC
    2009 : Royal Vista Capital assigned to BioStruxs LLC
    2010 : Patent Issued

NPE / troll-pattern signals

  1. Shell-entity transfer — unclear. While the assignees BCN Biosciences LLC and Royal Vista Capital LLC could potentially be shell entities, there is no concrete evidence from the provided text (e.g., registered-agent addresses, single-purpose LLC indication, or confirmation of no products) to definitively make this call. The eventual return of the patent to BioStruxs LLC also complicates a simple shell-entity transfer narrative.
  2. Known asserter in the chain — not present. None of the listed assignees (BCN Biosciences LLC, Royal Vista Capital LLC, BioStruxs LLC) are identified as known NPEs or patent asserters in the provided context.
  3. Repeat correspondent across the chain — not present. The correspondent information was not specified in the provided patent text for any of the assignment records, therefore, no recurrence can be identified.
  4. Cascading transfers — present. There are three assignments recorded within a span of approximately two years (October 2007 to September 2009). The transfers from BCN Biosciences LLC to Royal Vista Capital LLC and then to BioStruxs LLC (Reel 020044/0838, Reel 021678/0919, Reel 023178/0623) demonstrate consecutive assignments within a short timeframe.
  5. Pre-litigation transfer — not present. There is no litigation information provided to establish a comparison.
  6. Bankruptcy fire-sale — not present. There is no information provided about any of the assignees undergoing bankruptcy proceedings.
  7. Privateering — not present. There is no information to suggest privateering.
  8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at any known defensive aggregators.

Verdict

Insufficient data. While there is a signal of "cascading transfers" (three assignments between October 2007 and September 2009, prior to the patent's issue date in December 2010), the lack of information regarding the business activities of the assignees, the identity of the correspondents, and any litigation history prevents a confident determination of NPE status. The patent ultimately reverted to BioStruxs LLC, the original assignee, which further complicates the interpretation of the interim transfers.
The assignment records can be verified on the USPTO Assignment Center: https://assignmentcenter.uspto.gov/

Generated 5/29/2026, 8:50:09 PM