Assignment history

Inventors

• Byung Wan Yoon (KT Corp)
• Su Hwan Rim (KT Corp)

It is determinable that both inventors were employed by KT Corp at the time of filing, as KT Corp is the original assignee. No unusual patterns, such as all inventors departing within 12 months of filing, are immediately apparent from the provided information.

Original assignee

The original assignee is KT Corp. KT Corp is a major South Korean telecommunications company. It ships a wide range of products and services, including wireless communication services, which would embody the claims of the patent. KT Corp is currently an operating company.

Assignment timeline

To reconstruct the full assignment record for US patent 10051556, I need to access the USPTO Assignment Center. Since I cannot directly interact with web forms or conduct live searches on the USPTO Assignment Center website, I will rely on the information provided in the patent text itself and external search results that may reference these records.

The provided patent text explicitly states one assignment:

• 2020-10-23 (executed) / recorded 2020-10-23 (This is an assumption for the recorded date as only execution date is typically shown in the Google Patents summary under 'Legal Events' unless otherwise stated) — Reel 054148/0426
  • Conveyance: Assignment of Assignor's Interest
  • Assignor: KT CORPORATION
  • Assignee: GOLDEN EYE TECHNOLOGIES LLC
  • Correspondent: Not explicitly listed in the Google Patents legal event, but the event indicates "ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS)."
  • Context: Transfer-to-asserter (indicated by the current assignee being Golden Eye Technologies LLC, which is identified as the plaintiff in a district court case related to this patent).

I will now attempt to use Google Search to find the correspondent information for this specific reel/frame.

The search for correspondent information for reel 054148/0426 did not directly yield the correspondent's name or firm. However, the legal event on Google Patents for US10051556 states the assignment to GOLDEN EYE TECHNOLOGIES LLC on October 23, 2020, with reel/frame 054148/0426. Since direct USPTO Assignment Center search results are not available to me, I will proceed with the information I have.

2020-10-23 (executed) / recorded 2020-10-23 (assumed recorded date) — Reel 054148/0426

• Conveyance: Assignment of Assignor's Interest
• Assignor: KT CORPORATION
• Assignee: GOLDEN EYE TECHNOLOGIES LLC
• Correspondent: Not explicitly listed in available public summary, but usually present on the full USPTO recorded document.
• Context: Transfer to an asserting entity.

Timeline diagram

timeline
    title Ownership of US 10051556
    2017 : Application filed by KT Corp
    2018 : Patent granted
    2020 : Assigned to Golden Eye Technologies LLC

NPE / troll-pattern signals

1. Shell-entity transfer — Present. The patent was transferred from KT Corp, an operating company, to Golden Eye Technologies LLC. Golden Eye Technologies LLC is described as owning various patent portfolios related to cellular and Wi-Fi technologies, which is characteristic of a licensing-only entity. While no specific address or single-member LLC status is explicitly stated in the provided text, the nature of its stated business (owning and managing patent portfolios across different technology areas) aligns with a shell entity.

2. Known asserter in the chain — Present. Golden Eye Technologies LLC is identified as the assignee and is involved in litigation concerning this patent (Texas Eastern District Court case 2:25-cv-00898 and PTAB case IPR2026-00186). This pattern is consistent with a patent asserter (often referred to as an NPE or patent troll).

3. Repeat correspondent across the chain — Unclear. The correspondent for the 2020-10-23 assignment (Reel 054148/0426) is not explicitly listed in the provided information, making it impossible to check for recurrence.

4. Cascading transfers — Not present. Only one assignment is explicitly identified in the provided information.

5. Pre-litigation transfer — Unclear. The assignment to Golden Eye Technologies LLC occurred on 2020-10-23. While there is a Texas Eastern District Court case (2:25-cv-00898) and a PTAB case (IPR2026-00186) relating to this patent, the exact filing dates for these cases are not provided, only the year in the case number (2025 and 2026, respectively). Thus, it's not possible to definitively state if the transfer was within 6 months of the first suit.

6. Bankruptcy fire-sale — Not present. There is no indication that KT Corp filed for bankruptcy.

7. Privateering — Unclear. There is no information available to suggest privateering, such as SEC filings or specific reporting.

8. Defensive aggregator (anti-NPE) — Not present. The current assignee, Golden Eye Technologies LLC, is an asserting entity, not a defensive aggregator.

Verdict

NPE — high confidence

This verdict is based on two strong signals: the transfer from an operating company (KT Corp) to Golden Eye Technologies LLC, which exhibits characteristics of a shell entity focused on patent portfolio management, and the fact that Golden Eye Technologies LLC is actively involved in litigation concerning this patent, as indicated by the Texas Eastern District Court case (2:25-cv-00898) and the PTAB case (IPR2026-00186). The assignment to Golden Eye Technologies LLC is recorded under Reel 054148/0426 with an execution date of 2020-10-23.

You can verify this information through the USPTO Assignment Center: https://assignmentcenter.uspto.gov/