Assignment history

Inventors

• Sai C. Manapragada: The patent text does not explicitly state the employer of Sai C. Manapragada at the time of the original priority filing (October 30, 2013) or the application filing (March 4, 2024). However, the "Original Assignee" and the first recorded assignment indicate the patent was assigned to Xifi Networks R&D Inc.

Original assignee

The entity named on the issued patent US12015933 is Xifi Networks R&D Inc.

Based on the patent description, Xifi Networks R&D Inc. appears to be an operating company in the wireless networking field, developing systems for processing bandwidth-intensive data streams using virtual MAC and PHY layers, and for extending wireless network range. The patent describes applications and systems that would typically be embodied in products such as wireless access points, base stations, handhelds, tablets, computers, telephones, televisions, DVD players, BluRay players, media players, storage devices, or stand-alone add-on devices like "dongles". The patent does not explicitly state that Xifi Networks R&D Inc. itself shipped a product embodying these claims, but the nature of the invention suggests product development.

Their primary line of business, as inferred from the patent, is wireless communication technology, specifically high-bandwidth wireless networks for distributing multi-media content, and systems for extending wireless range and coverage.

The current status of Xifi Networks R&D Inc. is "Active" as per Google Patents.

Assignment timeline

• 2024-03-04 (executed) / recorded 2024-03-13 — Reel 062250/0675
  • Conveyance: ASSIGNMENT
  • Assignor: MANAPRAGADA, SAI C.
  • Assignee: XIFI NETWORKS R&D INC.
  • Correspondent: RUSH, DANIEL J. / CONLEY ROSE, P.C., 600 TRAVIS ST, SUITE 2100, HOUSTON, TX 77002. This correspondent appears for the only recorded assignment in this chain.
  • Context: Transfer of inventor's interest to the original corporate assignee.

Timeline diagram

timeline
    title Ownership of US 12015933
    2013 : Priority date
    2024 : Filed by Xifi Networks R&D Inc
         : Assigned from inventor to Xifi Networks R&D Inc
         : Granted to Xifi Networks R&D Inc

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The only recorded assignment is from the individual inventor to Xifi Networks R&D Inc.. Xifi Networks R&D Inc. appears to be an operating company based on the patent description of products and systems.
2. Known asserter in the chain — Not present. Xifi Networks R&D Inc. is not on common NPE lists.
3. Repeat correspondent across the chain — Unclear. Daniel J. Rush / Conley Rose, P.C. is the correspondent for the single recorded assignment (Reel 062250/0675). With only one assignment in this patent's chain, it's not possible to determine if this correspondent recurs across this chain. Without access to a wider database of tracked patents or NPE assertion lists for this specific correspondent, it's unclear if they are a repeat player in a broader context.
4. Cascading transfers — Not present. There is only one assignment recorded.
5. Pre-litigation transfer — Unclear. The first litigation (District Court case 2:24-cv-01057) was filed in the Texas Eastern District Court (year 2024) and the PTAB case (IPR2025-01207) was filed in 2025. The assignment from the inventor to Xifi Networks R&D Inc. was executed on 2024-03-04 and recorded on 2024-03-13 (Reel 062250/0675). This assignment predates the public knowledge of the Texas Eastern District Court case, which is identified as 2:24-cv-01057, meaning it was likely filed in 2024, but the exact filing date isn't provided. If the district court case was filed soon after the assignment, it could indicate a pre-litigation transfer, but without the precise filing date of the district court case, this remains unclear.
6. Bankruptcy fire-sale — Not present. No indication of bankruptcy for Xifi Networks R&D Inc.
7. Privateering — Not present. No information suggests a privateering arrangement.
8. Defensive aggregator (anti-NPE) — Not present. The chain does not terminate at a known defensive aggregator.

Verdict

Insufficient data.
While litigation is noted (US District Court Case 2:24-cv-01057 in Texas Eastern District Court and PTAB case IPR2025-01207), the assignment record only shows a single transfer from the inventor to Xifi Networks R&D Inc. (executed 2024-03-04, recorded 2024-03-13, Reel 062250/0675). There are no subsequent transfers to any other entity that would indicate a shell entity, a known asserter, or a defensive aggregator. Without further assignment records or specific details about the plaintiff in the district court case, it's not possible to confidently classify this as an NPE assertion, an operating-company assertion, or a defensive action.

Verification: USPTO Assignment Center for US12015933