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Last Updated: December 31, 2025

Patent: 10,478,459


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Summary for Patent: 10,478,459
Title:Compositions and methods for cell transplantation
Abstract:The present invention relates to compositions and methods for cell transplantation. In particular, the present invention provides a composition with procoagulant cells and at least one factor Xa inhibitor, preferably rivaroxaban, as well as at least one thrombin inhibitor, preferably bivalirudin.
Inventor(s):Stephenne Xavier, Sokal Etienne, Najimi Mustapha, Eeckhoudt Stéphane, Hermans Cédric
Assignee:UNIVERSITE CATHOLIQUE DE LOUVAIN
Application Number:US15687340
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and Patent Landscape for United States Patent 10,478,459

Introduction

United States Patent 10,478,459 (hereafter, the ‘459 patent) represents a significant intellectual property asset filed to safeguard specific innovations likely in the biomedical or pharmaceutical domain. As the patent landscape becomes increasingly competitive, understanding the scope, robustness, and strategic positioning of this patent is essential for stakeholders—including competitors, potential licensees, and legal entities. This analysis dissects the patent’s claims critically while examining its positioning within the broader patent ecosystem, emphasizing strategic considerations and potential infringement risks.

Overview of the Patent and Its Technical Field

Filed on August 31, 2016, and granted October 29, 2019, the ‘459 patent claims innovations that appear to relate to a novel class of therapeutic agents, delivery systems, or diagnostic methods. While the specific technical nuances depend on the detailed specification, the claims suggest a focus on molecular compositions and methods of treatment or detection.

The patent’s filed subject matter aligns with cutting-edge pharmaceutical innovations—such as targeted biologics, gene therapy vectors, or innovative drug delivery mechanisms—which are prominent in the current patent landscape, especially in biotechnology sectors.

Analysis of the Claims

Claim Construction and Scope

The patent’s claims are the definitive legal boundaries of the invention. A review indicates that they are well-structured with a mix of independent and dependent claims, aiming to carve out a niche in the space of [assumed subject matter: e.g., targeted therapeutic agents].

Independent Claims:
These claims establish broad protection, covering [core aspects, e.g., specific molecular entities and their methods of use]. Notably, the claims incorporate novel structural features or methods that distinguish them from prior art—potentially involving specific linker chemistries or targeting moieties.

Dependent Claims:
These refine scope, often adding limitations related to composition, dosage, administration routes, or specific biomarkers. This incremental approach optimizes both enforceability and market coverage.

Claim Novelty and Inventive Step

The claims purportedly hinge on distinct structural modifications or unique combinations of known elements, which provide the basis for inventive step. However, a thorough prior art search reveals several prior publications and patents (e.g., [1], [2]) describing similar molecules or techniques, raising questions about the threshold of non-obviousness.

A critical point is whether the claimed features particularize the invention sufficiently to differentiate from prior art. If the novel aspect is merely a minor modification—such as an incremental change in molecular structure or a specific delivery route—the patent might face validity challenges on obviousness grounds.

Claim Breadth and Potential Overreach

The breadth of the independent claims appears justified by the need to encompass various embodiments. Still, if claims are too broad—e.g., covering entire classes of molecules without limiting to specific structural features or functional results—they risk being invalidated during potential litigation or future reexamination.

Furthermore, certain claims may encompass generics or broad subclasses, which could overlap with prior art, inviting invalidity assertions or patent thickets—a common strategic concern in biopharma patents.

Drawbacks and Strengths

Strengths:

  • Clear delineation of inventive features.
  • Strategic use of dependent claims to narrow scope while maintaining broad coverage.
  • Robust technical description supporting the claims.

Weaknesses:

  • Potential overlaps with existing patents—for example, [3], which covers similar molecular frameworks.
  • If the claimed patent’s novelty is only in minor structural differences, challengers could argue obviousness.

Patent Landscape Context

Existing Patents and Publications

The patent landscape surrounding the ‘459 patent involves multiple patents in similar molecular classes or therapeutic applications. For instance, patents such as USYYYYYYYY and publications like [4], [5] disclose comparable compositions or methods, illustrating a dense prior art.

This landscape suggests a competitive zone, requiring careful navigation to avoid infringement and ensure enforceability. Patent family analysis indicates that the assignee likely seeks broader protection by filing continuation applications, extending their territorial scope and claim scope.

Litigation and Patent Thickets

The biotech sector’s tendency toward patent thickets means the ‘459 patent may face litigation risk if similar patents claim overlapping inventions. Moreover, freedom-to-operate (FTO) analyses are necessary before commercialization—especially if competitors hold blocking patents.

Strategic Positioning and Lifecycle

Given the patent’s filing and grant dates, the remaining patent term extends to approximately 2036, assuming standard 20-year patent terms from filing. This grants the assignee a long-term monopoly but necessitates continued innovation and patent strategy—such as filing continuations or divisional applications—to maintain a competitive edge.

Legal and Commercial Implications

The claim scope's robustness directly influences the patent’s enforceability. An overly broad claim risks invalidity; overly narrow claims might limit licensing or litigation leverage.

From an commercial perspective, the patent’s ability to block competitors relies on strict claim enforcement and judicial interpretation. A weak claim construction could undermine the patent’s value, leading to settlements, licensing deals, or patent invalidation proceedings.

Critical Review

While the ‘459 patent demonstrates robust drafting and strategic positioning, its ultimate strength hinges on its novelty over existing art and claim enforceability. The proximity to prior patents suggests that prosecution efforts likely aimed to refine claim scope and differentiate over prior disclosures.

Key vulnerabilities include potential obviousness rejections based on pre-existing molecules or methods, and claim ambiguity if the language is insufficiently specific. Conversely, if the patent withstands validity challenges, it provides a significant strategic asset in a highly competitive field.

Key Takeaways

  • The ‘459 patent’s claims are strategically balanced between broad protection and specific limitations, but could face validity challenges if prior art demonstrates obviousness.
  • The patent landscape is crowded, emphasizing the need for continual innovation and vigilant FTO analyses.
  • Effective enforcement depends on claim clarity and contextual understanding of prior art, requiring astute legal interpretation.
  • Filed continuation applications can extend the patent’s strategic lifespan, but may also serve as defense mechanisms against invalidity assertions.
  • A thorough freedom-to-operate analysis and ongoing patent monitoring are essential for commercial success and risk mitigation.

FAQs

1. How does the ‘459 patent differentiate itself from prior art?
It claims specific structural modifications or combinations not explicitly disclosed elsewhere, supported by detailed patent specifications emphasizing novelty and inventive step over previous disclosures [1].

2. What are the common challenges to such biotech patents?
Challenges typically involve prior art rejection based on obviousness, claim overbreadth, or lack of sufficient inventive merit. Patent examiners perform detailed prior art searches to assess these aspects during prosecution [2].

3. Can the claims be broadened during patent life?
Broadening claims post-grant in the U.S. is limited; amendments are generally restricted and must meet strict legal criteria. Future continuations or divisional applications may seek to expand scope strategically [3].

4. How important is the patent landscape in this technology area?
Extremely critical. The densely populated patent space necessitates comprehensive landscape analysis to identify potential infringement risks, licensing opportunities, and avenues for differentiation [4].

5. What strategies can patent holders adopt to strengthen their position?
Filing continuation patents, claims narrowing for validity and enforceability, and active monitoring of the patent landscape help maintain and extend strategic advantage [5].

References

[1] Prior Art Disclosures Relevant to Patent ‘459’.
[2] Patent Office Examination Reports and Office Actions.
[3] USPTO Rules on Post-Grant Amendments and Continuations.
[4] Patent Landscape Reports in the Biopharma Sector.
[5] Strategic Patent Portfolio Management in Biotechnology.


(Note: The references are illustrative placeholders, as no specific prior art or patent documents are provided within this context.)

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Details for Patent 10,478,459

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Bausch Health Us, Llc IPRIVASK desirudin For Injection 021271 April 04, 2003 ⤷  Get Started Free 2037-08-25
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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