Invalidity dossier
US 11432943
Systems and methods for orthopedic implant fixation
Current assignee: Carlsmed Inc
Added 9/24/2026, 12:03:34 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 11432943 B2
Title: Systems and methods for orthopedic implant fixation
Patent number / application: US11432943B2; Application US16/352,699 (published as US20190282367A1)
Assignee / inventors: Carlsmed Inc. (original and current assignee, per the supplied listing); inventors Niall Patrick Casey and Michael J. Cordonnier
Key dates: Priority date 2018-03-14; filing date 2019-03-13; publication of application 2019-09-19; granted 2022-09-06; adjusted expiration listed as 2039-04-17. Legal status listed as Active (noted in the source as an assumption, not a legal conclusion).
Purpose and plain-language scope: The patent is directed to systems and methods for orthopedic implant fixation. Classification and prior-art keywords provide the only substantive technical signal in the supplied excerpt: prior-art keywords are "patient, tooth, implant, base, specific"; classifications fall under A61F2/44 and subgroups, covering spinal/vertebral joint prostheses and intervertebral fusion cages—including substantially parallelepipedal or rectangular/trapezoidal cages (A61F2/447), circular/elliptical cross-section cages (A61F2/446), circular or kidney-shaped cross-sections perpendicular to the spine axis (A61F2/4465), and fixation appliances for connecting prostheses to the body (A61F2/30749). Shape subclasses (A61F2002/30108 et seq.) indicate rounded, circular, elliptical, and C/U- or horseshoe-shaped cross-sections, suggesting implant fixators with such geometry. In plain terms, the disclosure appears to concern spinal fusion implants/cages and components for fixing an implant to patient anatomy, potentially patient-specific in nature—though that characterization rests on classification and keyword data, not on claims reproduced in the excerpt.
What the excerpt does not establish: The supplied text contains no claims, no abstract, no specification text, no drawings, and no cited prior-art references. It therefore does not establish the actual claimed scope, what is novel or non-obvious, whether term "tooth" in the prior-art keywords refers to dental structure or is a keyword artifact, the precise clinical indication, or any litigation, validity, or ownership history. Any inference about breadth of coverage must await the full patent document.
Generated 10/1/2026, 9:32:06 PM
Cases on file (0)
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Litigation summary
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Proceedings on file (0)
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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.