Assignment history

Following a review of the assignment and litigation history for US patent 11,841,803, here is the full ownership chain and analysis of NPE-related signals.

Inventors

The named inventors are Skyler J. Saleh, Samuel Naffziger, Milind S. Bhagavat, and Rahul Agarwal. The patent was filed on 2019-06-28 and originally assigned to Advanced Micro Devices, Inc. (AMD). All inventors were employees of AMD at the time of filing. Public professional profiles confirm that key inventors like Samuel Naffziger were senior executives at AMD for many years, indicating the invention originated from core internal R&D.

Original assignee

The original assignee of record is Advanced Micro Devices, Inc. (AMD), a major multinational semiconductor company based in Santa Clara, California. AMD designs and sells high-performance computing, graphics, and visualization technologies, and it actively ships products, including GPUs, that embody the patented technology related to chiplet architecture. AMD remains a major operating company.

Assignment timeline

A search of the USPTO Patent Assignment Database for patent 11841803 reveals two recorded assignments.

• 2019-07-29 (executed) / recorded 2019-08-02 — Reel 049943/0660

  • Conveyance: Assignment of Assignor's Interest
  • Assignor: Skyler J. Saleh, Samuel Naffziger, Milind S. Bhagavat, Rahul Agarwal (the inventors)
  • Assignee: Advanced Micro Devices, Inc.
  • Correspondent: Thomas A. Ward, AMD, Austin, TX
  • Context: Standard transfer from inventors to their employer post-filing.

• 2024-11-08 (executed) / recorded 2024-11-18 — Reel 069381/0951

  • Conveyance: Assignment of Assignor's Interest
  • Assignor: Advanced Micro Devices, Inc.
  • Assignee: Onesta IP, LLC
  • Correspondent: Jonathan R. Miller, Haug Partners LLP, New York, NY
  • Context: Transfer from the original developer (an operating company) to a third-party holding company, likely for the purpose of licensing and assertion.

Timeline diagram

timeline
    title Ownership of US 11841803
    2019 : Filed by AMD inventors
         : Assigned to AMD
    2023 : Patent issues
    2024 : Assigned to Onesta IP LLC
    2025 : First infringement suit filed

NPE / troll-pattern signals

1. Shell-entity transfer: Present. The patent was transferred from Advanced Micro Devices, Inc., a large operating company, to Onesta IP, LLC. The assignee's name, containing the suffix "IP", and its lack of commercial products indicate it is a special-purpose entity for holding and asserting intellectual property rather than an operating company. (Reel: 069381/0951, Executed: 2024-11-08).

2. Known asserter in the chain: Present. While Onesta IP, LLC is a relatively new entity, public litigation data confirms it began asserting patents, including this one, shortly after its formation and acquisition of portfolios from operating companies like AMD. The patent text itself lists litigation filed in 2025 and 2026, subsequent to the transfer to Onesta IP. Unified Patents has also identified Onesta IP as a patent assertion entity.

3. Repeat correspondent across the chain: Not present. The two assignments on record were handled by different correspondents: one was an in-house attorney for AMD, and the other was an attorney at an external law firm representing Onesta IP.

4. Cascading transfers: Not present. There is only a single transfer from the original assignee to the current assignee.

5. Pre-litigation transfer: Present. The assignment to Onesta IP, LLC was executed on 2024-11-08. The litigation data provided lists a case filed in the Western District of Texas in 2025 (1:25-cv-00586), which is within months of the transfer, indicating the patent was acquired for the purpose of immediate assertion.

6. Bankruptcy fire-sale: Not present. The assignor, AMD, is a financially healthy and growing operating company.

7. Privateering: Unclear. It is possible that AMD retains a financial interest in the assertion campaign by Onesta IP, LLC, which would constitute privateering. However, without access to the confidential terms of the assignment agreement, this cannot be confirmed.

8. Defensive aggregator (anti-NPE): Not present. The chain ends at an assertion entity, not a defensive aggregator like RPX or LOT Network.

Verdict

NPE — high confidence

The verdict is based on two strong, unambiguous signals. First, the patent was transferred from its original inventor, the operating company AMD, to a non-operating "IP" holding company (Reel 069381/0951). Second, this transfer was immediately followed by litigation within months (case 1:25-cv-00586), confirming a clear pre-litigation transfer pattern for the purpose of assertion. This sequence is a classic indicator of an NPE monetization campaign.

Verify at: USPTO Patent Assignment Search for Pat. No. 11841803