Patent 12303166

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. ? · recorded 2024-11-11 · Assignment

    PATEL, SAMIT; PELLEGRINO, RICHARD; CARRISON, HAROLDRELIEVANT MEDSYSTEMS, INC.

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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Inventors

  • Richard Pellegrino
  • Samit Patel
  • Harold Carrison

At the time of filing, all inventors were associated with Relievant Medsystems Inc., the original assignee.

Original assignee

The original assignee, Relievant Medsystems Inc., is an operating company in the medical device sector. They develop and market devices for minimally invasive treatments, particularly in the spinal space, including procedures related to the basivertebral nerve (BVN). Their product line, which includes the Intracept® System, embodies the claims described in US12303166, as it is used for basivertebral nerve ablation. Relievant Medsystems Inc. is currently operating and was acquired by Boston Scientific Corporation in January 2023.

Assignment timeline

There are no assignment records for US12303166 on the USPTO Assignment Center. The Google Patents "Legal Events" section shows an assignment to RELIEVANT MEDSYSTEMS, INC. on 2024-11-11, with Assignors: PATEL, SAMIT, PELLEGRINO, RICHARD, CARRISON, HAROLD. This appears to be an assignment from the inventors to the original assignee, which is typically recorded shortly after filing or issuance. Since the patent was filed on 2024-07-19 and granted on 2025-05-20, this recording date of 2024-11-11 is consistent with an assignment from inventors to the initial assignee. This entry does not provide a reel/frame number as it's from Google Patents' aggregated data.

Timeline diagram

timeline
    title Ownership of US 12303166
    2024 : Application filed by Relievant Medsystems Inc
         : Assigned to Relievant Medsystems Inc by inventors
    2025 : Patent granted
    2026 : Litigation filed by Boston Scientific/Relievant

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The patent is currently held by Relievant Medsystems Inc., an operating company.
  2. Known asserter in the chain — not present. Relievant Medsystems Inc. and Boston Scientific Corporation are operating companies.
  3. Repeat correspondent across the chain — unclear. Without USPTO Assignment Center records, correspondent information beyond the initial Google Patents entry (which only lists the inventors as assignors) is not available.
  4. Cascading transfers — not present. There are no recorded transfers.
  5. Pre-litigation transfer — not present. The patent was assigned to Relievant Medsystems Inc. in November 2024, and litigation began in July 2025, which is outside the 6-month window for this signal.
  6. Bankruptcy fire-sale — not present. Relievant Medsystems Inc. was acquired by Boston Scientific, not subject to bankruptcy.
  7. Privateering — unclear. While Boston Scientific acquired Relievant, the current litigation involves Boston Scientific and Relievant as plaintiffs against Stryker, indicating a direct assertion by operating companies against a competitor. There is no explicit evidence of privateering.
  8. Defensive aggregator (anti-NPE) — not present. The current owners are actively asserting the patent.

Verdict

Operating-company assertion

The patent is currently owned by Relievant Medsystems Inc., which is an operating company acquired by Boston Scientific Corporation. Both companies develop and market medical devices and are actively asserting the patent against a direct competitor, Stryker Corporation, as indicated by the ongoing litigation (District Court Case 2:25-cv-12700 and CAFC Case 26-1171). This aligns with an operating-company assertion model rather than an NPE model.

US Patent Assignment Search: https://assignmentcenter.uspto.gov/

Generated 6/18/2026, 12:01:05 AM