Patent 8350763

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. 2024-12-31 · reel 069707/0882 · Assignment

    RAPPAPORT, THEODORE S.MASSIVELY BROADBAND LLC, TEXAS

    shell-entity transfer

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

The sole named inventor for US Patent 8,350,763 is Theodore S. Rappaport. At the time of filing, the patent lists the "Original Assignee" as "Individual" and states "Application filed by Individual". This indicates that Theodore S. Rappaport, the inventor, was the original assignee, rather than an employer.

Original assignee

The entity named as the original assignee on the issued patent is "Individual" (Theodore S. Rappaport). It is unclear whether Theodore S. Rappaport, as an individual, shipped a product embodying the claims of the patent. Given the technical nature of "Active antennas for multiple bands in wireless portable devices," it is highly unlikely that an individual would directly ship such products. The primary line of business is not applicable for an individual inventor in this context. The current status is that the patent was later assigned to Massively Broadband LLC.

Assignment timeline

  • 2024-12-31 (executed) / recorded 2024-12-31 — Reel 069707/0882
    • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
    • Assignor: RAPPAPORT, THEODORE S.
    • Assignee: MASSIVELY BROADBAND LLC, TEXAS
    • Correspondent: Not specified in available records.
    • Context: Transfer from individual inventor to an LLC.

Timeline diagram

timeline
    title Ownership of US 8350763
    2008 : Priority date
    2009 : Filed by Theodore S Rappaport
    2013 : Issued to Theodore S Rappaport
    2024 : Assigned to Massively Broadband LLC
    2025 : Litigation filed TX East
         : PTAB case filed by Unified

NPE / troll-pattern signals

  1. Shell-entity transfer — Present. The transfer from the individual inventor, Theodore S. Rappaport, to "Massively Broadband LLC, Texas" (Reel 069707/0882, effective 2024-12-31) indicates a shell entity. The name structure (LLC) combined with the transfer from an individual, and the existence of litigation activity, suggests a licensing-focused entity rather than an operating company that directly produces products.

  2. Known asserter in the chain — Present. The current assignee, Massively Broadband LLC, has been challenged by Unified Patents in a PTAB case (IPR2025-01565), which strongly suggests it is considered an NPE or asserter. Additionally, a US case (2:25-cv-00608) has been filed in the Texas Eastern District Court, a common venue for patent assertion entities.

  3. Repeat correspondent across the chain — Unclear. The provided patent text does not specify the correspondent attorney or firm for the recorded assignment (Reel 069707/0882).

  4. Cascading transfers — Not present. Only one assignment event is recorded in the provided information: the transfer from Theodore S. Rappaport to Massively Broadband LLC, effective 2024-12-31.

  5. Pre-litigation transfer — Present. The assignment to Massively Broadband LLC was effective 2024-12-31 (Reel 069707/0882). A US case was filed in the Texas Eastern District Court (case 2:25-cv-00608) in 2025, which falls within six months of the assignment date.

  6. Bankruptcy fire-sale — Not present. There is no information in the provided records to suggest that the original assignee (Theodore S. Rappaport) or any prior entity filed for bankruptcy.

  7. Privateering — Unclear. There is no explicit information in the provided records to indicate that an operating company transferred the patent to Massively Broadband LLC to assert on its behalf against competitors.

  8. Defensive aggregator (anti-NPE) — Not present. The current assignee, Massively Broadband LLC, is involved in patent litigation as a plaintiff (in the Texas Eastern District Court case), and is not a known defensive aggregator like RPX or Unified Patents. Unified Patents, in fact, is petitioning to challenge the patent at the PTAB.

Verdict

NPE — high confidence. This verdict is supported by three strong signals: the transfer from an individual inventor to an LLC (Massively Broadband LLC), the involvement of Massively Broadband LLC in litigation as a plaintiff in a known NPE venue (Texas Eastern District Court) and as a target of a Unified Patents IPR, and the pre-litigation timing of the assignment (effective 2024-12-31, with litigation filed in 2025). These factors collectively indicate that Massively Broadband LLC is operating as a non-practicing entity.

USPTO Assignment Center Search for US8350763

Generated 5/24/2026, 12:45:43 PM