Invalidity dossier
US 11903849
Intervertebral implant and tool assembly
Current assignee: Moskowitz Family LLC
Added 9/23/2026, 10:56:36 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US 11903849 B2 — Patent Overview
Title: Intervertebral implant and tool assembly
Patent number: US 11903849 B2
Application number: US 17/706,873
Filed: 2022-03-29
Granted / published: 2024-02-20
Inventors: Ahmnon D. Moskowitz; Pablo A. Valdivia Y. Alvarado; Mosheh T. Moskowitz; Nathan C. Moskowitz
Current assignee (as listed, with Google's disclaimer): Moskowitz Family LLC
Priority: claimed from earlier applications (e.g., US 11/208,644, priority 2005‑08‑23; US 11/536,815; US 11/842,855); Google lists a priority date of 2005‑04‑12 as an assumption, not a legal conclusion.
Legal status: Google's listing shows "Expired – Lifetime," with adjusted expiration 2025‑08‑23 (a status assumption, not a legal conclusion).
Classifications: A61F2/4611 (spinal prosthesis insertion/extraction tools), A61F2/30, A61B17/70, A61B17/0642, A61B17/8635, among others.
Purpose (plain language): The title and classification indicate a spinal (intervertebral) implant supplied together with an instrument or tool assembly for placing it. The classifications point to special tools for inserting or extracting spinal prostheses rather than to a method of treatment.
Plain-language scope: Based only on the supplied text, the disclosed subject matter concerns an intervertebral implant and an associated tool assembly. The source's "prior art keywords" are top wall, intervertebral implant, wall, sidewall, and indentation, suggesting the implant body is described in terms of walls (top and side) and a recess or indentation feature; however, the excerpt does not supply claim language, so no element can be stated as claimed.
What the excerpt does not establish: It does not provide the claims, abstract, or written description, so the actual claimed scope is unknown. It does not establish the priority chain's legal effect, validity, enforceability, or whether the listed status is accurate. Ownership transfers, litigation, and prior-art content were not analyzed.
Generated 10/1/2026, 9:33:01 PM
Cases on file (0)
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Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Proceedings on file (0)
All PTAB activity →AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.
No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
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.
Prior art
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.