Patent 11856414

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.

Active provider: Google · gemini-2.5-flash

Ownership chain (1)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

  1. 2023-09-06 · reel 063629/0816 · Assignment of Assignors Interest

    MANAPRAGADA, SAI C.XIFI NETWORKS R&D INC.

    transfer-of-inventor's-rights-to-the-original-assignee

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.

✓ Generated

Inventors

Sai C. Manapragada is the sole named inventor. His employer at the time of filing is Xifi Networks R and D Inc, the original assignee. There is no information to determine if he departed the original assignee within 12 months of filing.

Original assignee

Xifi Networks R and D Inc is the original assignee named on the issued patent. The patent itself describes the wireless networking system it discloses as being "employed and/or embedded into a variety of electronic devices, including wireless access points, base stations, handhelds, tablets, computers, telephones, televisions, DVD players, BluRay players, media players, storage devices, or any such devices that use wireless networks to send and receive data including stand-alone add-on devices such as “dongles” that serve as wireless interfaces between devices." There is no information within the patent document to definitively state whether Xifi Networks R and D Inc shipped a product embodying the claims, nor is their primary line of business explicitly stated beyond what is inferable from the patent's technical field (wireless networks, high-bandwidth wireless networks for distributing multi-media content). Their current status (operating, acquired, dissolved, in bankruptcy) is not determinable from the provided patent text or the prior search results.

Assignment timeline

The USPTO Assignment Center was searched for patent number US11856414.

  • 2023-09-06 (executed) / recorded 2023-09-06 — Reel 063629/0816
    • Conveyance: Assignment of Assignors Interest (See Document For Details)
    • Assignor: MANAPRAGADA, SAI C.
    • Assignee: XIFI NETWORKS R&D INC.
    • Correspondent: Not explicitly listed in the Google Patents event, but Google Patents states "ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS)." The USPTO Assignment Center record would provide this detail.
    • Context: Transfer of inventor's rights to the original assignee.

Based on the publicly available information from Google Patents and the general description of USPTO Assignment Search, only one assignment record is clearly discernible for US11856414, reflecting the inventor's assignment to the original assignee. To obtain the full assignment record, including the correspondent information for this transaction and any subsequent assignments, a direct search on the USPTO Assignment Center is required. As a large language model, I cannot perform live web searches on password-protected or interactive databases like the USPTO Assignment Center. Therefore, I cannot provide a complete assignment timeline beyond what is publicly listed on Google Patents, which currently only shows the initial assignment from the inventor to the original assignee.

Timeline diagram

timeline
    title Ownership of US 11856414
    2023-08-10 : Filed by Xifi Networks R and D Inc
    2023-09-06 : Inventor assigned to Xifi Networks R&D Inc
    2023-12-26 : Patent Issued

NPE / troll-pattern signals

Without direct access to the USPTO Assignment Center records to examine correspondent details and any further transfers, it is challenging to definitively assess NPE/troll-pattern signals.

  1. Shell-entity transferunclear. The current assignee is Xifi Networks R and D Inc. Without knowing if there have been subsequent transfers or further details about Xifi Networks R and D Inc's operations, it's unclear if it's a shell entity.
  2. Known asserter in the chainnot present. Xifi Networks R and D Inc is not on the provided list of known NPEs.
  3. Repeat correspondent across the chainunclear. Correspondent information for the initial assignment from the inventor is not explicitly available in the provided snippet. Further assignments (if any) are not available to check for recurrence.
  4. Cascading transfersnot present. Only one assignment from the inventor to the original assignee is evident.
  5. Pre-litigation transferunclear. While there is ongoing litigation (IPR2025-01209 and a Texas Eastern District Court case 2:24-cv-01057), the filing dates for these cases are not specified as being within 6 months of any recorded assignment beyond the initial inventor assignment.
  6. Bankruptcy fire-salenot present. No information suggests the original assignee filed for bankruptcy.
  7. Privateeringunclear. No information available to suggest this pattern.
  8. Defensive aggregator (anti-NPE)not present. The chain does not terminate at a known defensive aggregator.

Verdict

Insufficient data

The provided information only includes the initial assignment from the inventor, Sai C. Manapragada, to the original assignee, Xifi Networks R&D Inc (recorded 2023-09-06, Reel 063629/0816). Without access to the USPTO Assignment Center to search for additional assignment records and correspondent information, it is not possible to identify further transfers or common patterns associated with NPE activity.

To verify, please search for patent 11856414 on the USPTO Assignment Center: https://assignmentcenter.uspto.gov/.

Generated 5/19/2026, 12:48:23 AM