Patent 11988373

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. 2023-06-19 · recorded 2023-06-21 · reel 006451/0219 · Assignment

    WEIKAI JIANG, JINJIAN CAI, WENFENG CHEN, QINGBI HE, YINRU PENGGUANGZHOU HAOYANG ELECTRONIC CO., LTD.

    Correspondent: LIU, XIAOBING · GUANGZHOU HAOYANG ELECTRONIC CO., LTD.

    initial assignment from inventors to the corporate entity

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 named inventors for US patent 11988373 are Weikai Jiang, Jinjian Cai, Wenfeng Chen, Qingbi He, and Yinru Peng. At the time of filing, their employer was Guangzhou Haoyang Electronic Co Ltd, as indicated by the assignment of their interest to the company shortly after the priority date.

Original assignee

The original assignee named on the issued patent US11988373 is Guangzhou Haoyang Electronic Co Ltd. The company is a high-tech enterprise listed on the ChiNext Board of the Shenzhen Stock Exchange (stock code: 300833), also known by its brand "Golden Sea". Its primary line of business involves the R&D, manufacturing, and sales of stage entertainment lighting equipment, architectural lighting fixtures, and truss products. Given their business, they actively ship products that embody the claims, such as various types of LED and HID stage and architectural lighting fixtures. Guangzhou Haoyang Electronic Co Ltd is currently an active, operating organization.

Assignment timeline

The USPTO Assignment Center shows one assignment record for US patent 11988373:

  • 2023-06-19 (executed) / recorded 2023-06-21 — Reel 006451/0219
    • Conveyance: ASSIGNMENT
    • Assignor: WEIKAI JIANG, JINJIAN CAI, WENFENG CHEN, QINGBI HE, YINRU PENG
    • Assignee: GUANGZHOU HAOYANG ELECTRONIC CO., LTD.
    • Correspondent: LIU, XIAOBING; GUANGZHOU HAOYANG ELECTRONIC CO., LTD.; NO. 109, HAIYONG ROAD, SHIQI TOWN, PANYU, GUANGZHOU, 511450 CHINA
    • Context: Initial assignment from inventors to the corporate entity.

Timeline diagram

timeline
    title Ownership of US 11988373
    2023 : Filed by Guangzhou Haoyang Elec
         : Inventors assigned to Guangzhou Haoyang Elec
    2024 : Issued to Guangzhou Haoyang Elec
    2025 : PTAB case IPR2025-01016 filed

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. The only assignment is from the inventors to Guangzhou Haoyang Electronic Co Ltd, which is an active, publicly traded manufacturing company.
  2. Known asserter in the chain — Not present as an assignee. However, a PTAB case IPR2025-01016 was filed by Unified Patents as the petitioner, which is a defensive aggregator (anti-NPE) challenging the patent.
  3. Repeat correspondent across the chain — Not present. There is only one assignment record from the inventors to the original assignee, and no recurrence of a correspondent within this limited chain.
  4. Cascading transfers — Not present. Only one assignment from the inventors to the initial assignee.
  5. Pre-litigation transfer — Not present. The assignment was in June 2023, while the PTAB case was filed in July 2025. The PTAB filing is a challenge against the patent, not an assertion by the patent owner.
  6. Bankruptcy fire-sale — Not present. Guangzhou Haoyang Electronic Co Ltd is an active, operating company.
  7. Privateering — Unclear. While there's no evidence of a privateering arrangement, the existence of an IPR by Unified Patents suggests the patent may be perceived as a potential assertion risk, or it has been asserted in another venue not identified.
  8. Defensive aggregator (anti-NPE) — Present (as a challenger). Unified Patents filed an IPR against this patent (IPR2025-01016), indicating that the patent is being challenged by a defensive aggregator rather than being acquired by one.

Verdict

Insufficient data.
While Unified Patents, a known defensive aggregator, has filed an IPR against this patent, there are no recorded assignments indicating a transfer to an NPE. The only assignment on record is the standard initial transfer from the inventors to their employer, Guangzhou Haoyang Electronic Co Ltd (Reel 006451/0219, recorded 2023-06-21), which is a product-shipping company. Without further assignment records, it's impossible to determine if the patent has been transferred to an NPE.

USPTO Assignment Center search for US11988373: https://assignmentcenter.uspto.gov/

Generated 5/17/2026, 12:48:08 PM