Patent 12308087

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

  • Hyun Lee: The sole inventor listed on the patent. At the time of the earliest priority filing (November 3, 2010), Hyun Lee's other patents indicate an affiliation with the original assignee, Netlist, Inc., where he is a prolific inventor.

Original assignee

  • Netlist Inc. (Irvine, CA): The entity named on the issued patent is Netlist, Inc. Founded in 2000, Netlist is a publicly-traded company that designs and sells high-performance modular memory subsystems. The company has a history of bringing innovative memory products to market, such as the first load-reduced DIMM (LRDIMM) and NVDIMMs, which merge DRAM and NAND flash. The patent's subject matter aligns directly with Netlist's core business of developing advanced memory module architectures. Netlist is an operating company that actively ships products and is also known for vigorously enforcing its patent portfolio.

Assignment timeline

A search of the USPTO Patent Assignment Search database for US Patent 12,308,087 reveals no recorded assignments. The patent remains with the original assignee.

Timeline diagram

timeline
    title Ownership of US 12308087
    2010 : Earliest priority date
    2022 : Application filed by Netlist Inc
    2025 : Issued to Netlist Inc

NPE / troll-pattern signals

  1. Shell-entity transfer: Not present. The patent has not been assigned since it was issued.
  2. Known asserter in the chain: Not present. While Netlist is a frequent plaintiff in patent litigation, it is the original inventor and an operating company, not a non-practicing entity (NPE) in the traditional sense. There are no other assignees in the chain.
  3. Repeat correspondent across the chain: Not present. There are no assignment recordings and therefore no correspondents to analyze.
  4. Cascading transfers: Not present.
  5. Pre-litigation transfer: Not present.
  6. Bankruptcy fire-sale: Not present.
  7. Privateering: Not present.
  8. Defensive aggregator (anti-NPE): Not present.

Verdict

  • Insufficient data

There are no recorded assignments for this patent in the USPTO database. The ownership appears to have remained with the original assignee, Netlist, Inc., since its issuance. Without any transfers to analyze, it is not possible to identify patterns associated with NPE activity.

A search of the USPTO Assignment Center can be conducted for verification at: https://assignmentcenter.uspto.gov/.

Generated 5/14/2026, 12:46:47 AM