Patent 11948550

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. 2021-05-12 · recorded 2021-08-31 · reel 057344/0604 · Assignment

    SEREBRYAKOV, MAXIM; ZHANG, SHAWNSanas.ai Inc.

    Correspondent: R. SCOTT MCKEEVER · POLSINELLI

    Transfer of inventors' interest to their employer, 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

  • Maxim Serebryakov (Employer: Sanas Ai Inc. at time of filing, based on original assignee information)
  • Shawn Zhang (Employer: Sanas Ai Inc. at time of filing, based on original assignee information)

No unusual patterns observed regarding inventor departures, as both assigned their interest to Sanas.ai Inc.

Original assignee

The original assignee named on the patent is Sanas Ai Inc. The company appears to be an operating company that ships a product embodying the claims, as the patent extensively describes "new software technology" and an "accent-conversion application" that performs real-time accent conversion at low latency. Its primary line of business is real-time accent conversion software utilizing machine-learning models. The current status of Sanas Ai Inc. is "Active".

Assignment timeline

  • 2021-05-12 (executed) / recorded 2021-08-31 — Reel 057344/0604
    • Conveyance: ASSIGNMENT
    • Assignor: SEREBRYAKOV, MAXIM; ZHANG, SHAWN
    • Assignee: SANAS.AI INC.
    • Correspondent: R. SCOTT MCKEEVER; POLSINELLI PC; 1000 LOUISIANA STREET, SUITE 6400; HOUSTON, TX 77002.
    • Context: Transfer of inventors' interest to their employer, the original assignee.

Timeline diagram

timeline
    title Ownership of US 11948550
    2021 : Inventors assign to Sanas.ai Inc.
    2024 : Patent granted

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The patent was assigned from the inventors to Sanas.ai Inc., which is described as developing and operating the accent conversion software, indicating it is an operating company.
  2. Known asserter in the chain — not present. Sanas.ai Inc. is not identified as a known patent asserter or NPE on public lists.
  3. Repeat correspondent across the chain — not present. Only one assignment event is recorded for this patent, therefore no recurrence of a correspondent within this chain.
  4. Cascading transfers — not present. Only a single assignment from the inventors to the initial operating company is recorded.
  5. Pre-litigation transfer — not present. The assignment was executed on 2021-05-12 and recorded on 2021-08-31. The earliest recorded litigation event for this patent family (PTAB case IPR2026-00272, US case 3:25-cv-05666) occurred in 2025/2026, well over six months after the assignment.
  6. Bankruptcy fire-sale — not present. There is no indication of bankruptcy filings by the assignor or assignee.
  7. Privateering — not present. There is no evidence suggesting a transfer from an operating company to an NPE for assertion purposes.
  8. Defensive aggregator (anti-NPE) — not present. The current assignee, Sanas.ai Inc., is not a known defensive aggregator.

Verdict

Operating-company assertion. The sole recorded assignment for US11948550 is a standard transfer of inventor rights to their employer, Sanas.ai Inc., an operating company that appears to develop and commercialize the described accent conversion software. There are no signals indicative of NPE activity in the patent's ownership chain.

USPTO Assignment Center search for US11948550: https://assignmentcenter.uspto.gov/ (Search by patent number "11948550")

Generated 5/29/2026, 5:55:48 PM