Patent 11582343

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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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 11582343 is Eric M. DeLangis. It is highly probable that Eric M. DeLangis was employed by Competitive Access Systems Inc., which is listed as both the original and current assignee, at the time of the original priority filing (October 15, 2002) and at the filing of this continuation patent (August 15, 2022).

Original assignee

The entity named on the issued patent is Competitive Access Systems Inc. There is no evidence from available search results to suggest that Competitive Access Systems Inc. currently ships a product embodying the claims of US11582343. Instead, Competitive Access Systems Inc. is identified as a Patent Assertion Entity (NPE) by Unified Patents. Its primary line of business appears to be patent licensing and litigation. The company is currently operating and is actively involved in patent litigation, with several US district court cases filed in 2024 and 2025, and a PTAB case filed in 2025.

Assignment timeline

A search of the USPTO Patent Assignment Search database for US patent 11582343 (https://assignmentcenter.uspto.gov/) yielded no recorded assignments for this patent after its issuance. Therefore, the original assignee, Competitive Access Systems Inc., remains the current recorded assignee.

Timeline diagram

timeline
    title Ownership of US 11582343
    2002 : Priority date
    2022 : Filed by Competitive Access Systems Inc
    2023 : Issued
    2024 : Litigation started by CAS

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. No transfers have been recorded for this specific patent. However, Competitive Access Systems Inc., the original and current assignee, is identified as an NPE (Patent Assertion Entity) by Unified Patents.
  2. Known asserter in the chain — Present. Competitive Access Systems Inc. is identified as an NPE by Unified Patents. They are the current assignee and have initiated multiple infringement lawsuits.
  3. Repeat correspondent across the chain — Not present. No assignments are recorded in the chain for this patent.
  4. Cascading transfers — Not present. No assignments are recorded in the chain for this patent.
  5. Pre-litigation transfer — Unclear. No transfers are recorded for this patent, so the timing relative to litigation cannot be assessed. However, litigation involving this patent and related patents, initiated by Competitive Access Systems Inc., began in 2024 and 2025.
  6. Bankruptcy fire-sale — Not present. There is no indication of bankruptcy or a sale in bankruptcy proceedings for Competitive Access Systems Inc. in the provided information.
  7. Privateering — Not present. No transfers from an operating company to an NPE acting on its behalf are recorded.
  8. Defensive aggregator (anti-NPE) — Not present. There is no transfer to a defensive aggregator in the chain.

Verdict

NPE — high confidence
This verdict is based on the direct identification of Competitive Access Systems Inc. as a Patent Assertion Entity (NPE) by Unified Patents. Furthermore, Competitive Access Systems Inc. is actively engaged in patent infringement litigation concerning US11582343 and related patents, with cases filed in 2024 and 2025. The lack of recorded assignments on the USPTO Assignment Center (https://assignmentcenter.uspto.gov/ ) indicates the patent has remained with this entity since issuance.

Generated 5/21/2026, 12:46:25 PM