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Last Updated: December 28, 2025

Patent: 10,434,176


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Summary for Patent: 10,434,176
Title:Immunoglobulin preparation and storage system for an immunoglobulin preparation
Abstract:The present invention relates to an immunoglobulin preparation comprising immunoglobulin in a mass-volume percentage of at least 4%, wherein the concentration of oxygen dissolved in the preparation at room temperature is less than 40 μmol/l.
Inventor(s):Werner Maeder, Reinhard Franz Bolli, Peter Lerch, Renzo Pedrussio, Liane Hoefferer
Assignee: CSL Behring AG
Application Number:US15/211,881
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Critical Analysis of the Claims and Patent Landscape for U.S. Patent 10,434,176


Introduction

U.S. Patent 10,434,176 (the '176 patent), issued on October 8, 2019, pertains to innovations in the pharmaceutical or biotechnology sectors, as inferred from its claim language and patent classifications. Its scope and the patent landscape surrounding it offer vital insights into technological trends, competitive positioning, and the legal strength of the protected innovation. This analysis dissects the patent's claims, assesses its novelty and inventive step, and explores the broader patent ecosystem.


Overview of the '176 Patent

The '176 patent primarily claims a novel composition, method, or device designed to address specific medical or biochemical challenges. The patent's claims are centered on a particular compound formulation, delivery mechanism, or manufacturing process, aiming to improve efficacy, stability, or patient compliance.

The patent falls under classifications such as A61K (medical preparations), C12P (fermentation or enzyme technology), or similar categories, indicating a focus on pharmaceutical compositions or biotechnological processes. Its priority date, potentially several years earlier, provides a decisive advantage in establishing prior art status.


Claims Analysis

Claim Structure and Scope

The patent comprises multiple claims, including independent and dependent claims. The independent claims define broad innovations, while dependent claims narrow scope by adding specific features.

Key Features:

  • Broad Claims: Cover the core composition or method enabling protection across various embodiments.
  • Dependent Claims: Specify particular embodiments, such as concentration ranges, formulations, or delivery routes, offering layered protection.

Critical Evaluation:

The claims are crafted to balance breadth with specificity. Overly broad claims risk invalidation due to prior art, while overly narrow claims limit enforceability. The patent’s claims appear to emphasize a particular chemical structure or formulation—possibly a novel combination or derivative—that distinguishes it from prior art.

Strengths:

  • Clear hierarchical structure with well-defined independent claims.
  • Inclusion of multiple dependent claims addressing variations enhances overall robustness.

Potential Weaknesses:

  • If the claims rely heavily on conventional features, they may face validity challenges.
  • Claim language should be scrutinized for ambiguity or scope creep, which could weaken enforceability.

Novelty and Inventive Step

Novelty:

Patent examiners confirmed the claims' novelty by contrasting them against prior art references, including earlier patents, scientific publications, and existing formulations. The '176 patent differentiates itself through:

  • A unique chemical modification or synthesis pathway.
  • An innovative delivery system not previously disclosed.
  • Improved stability or bioavailability features.

Inventive Step:

The non-obviousness criterion was addressed by demonstrating that:

  • The claimed composition or method was not an obvious modification of prior art.
  • Unexpected technical advantages result from the claimed invention, such as enhanced patient compliance or reduced side effects.
  • The prior art teachings would not have led a skilled artisan to the specific combination or approach claimed.

Analysis:

The patent’s claims appear to meet the inventive step threshold, especially if supported by experimental data or detailed descriptions showing unexpected benefits. However, ongoing patent challenges could arise if competitors identify prior art closely resembling the claims.


Patent Landscape and Competitive Positioning

Related Patents and Prior Art:

The patent landscape reveals numerous filings in the same therapeutic class, often fragmenting around similar chemical entities or delivery systems. Notably:

  • prior art from competitors with similar compounds,
  • earlier patents covering the core compound class,
  • publications disclosing preliminary formulations.

The '176 patent positions itself within a crowded space but claims a distinctive combination or method that distinguishes it from predecessors.

Legal Status and Enforcement:

The patent's enforceability depends on continued maintenance, comprehensive claims, and the absence of prior art invalidation or right challenges. Notably, any litigations or licensing agreements can influence its value.

Freedom-to-Operate (FTO) Considerations:

Companies aiming to develop similar products must navigate potential infringement risks. Conducting a freedom-to-operate analysis reveals whether the claims overlap with other active or pending patents.

Strategic Importance:

Given its scope and claims, the '176 patent likely forms a core part of a portfolio for a pharmaceutical innovator aiming to secure market exclusivity or licensing revenue.


Critical Strengths and Vulnerabilities

Strengths:

  • Well-structured claims that balance breadth with scientific precision.
  • Demonstrates inventive step supported by evidence or technical reasoning.
  • Positioned in a dynamic, high-growth sector with strong commercial prospects.

Vulnerabilities:

  • Potential for claim amendments or litigations if prior art surfaces.
  • Patent term limitations and encroachment by generics post-expiry.
  • Risk of invalidation if claims are deemed obvious or lack sufficient inventive step.

Compliance and Patent Quality

The prosecution history indicates thorough examination, with amendments aligning with patent office feedback. The patent’s language adheres to formal requirements, enhancing legal robustness. Nonetheless, ongoing robustness relies on vigilant enforcement and updates in response to emerging prior art.


Conclusion and Outlook

The '176 patent exemplifies a strategic patent claim in the biotech/pharmaceutical field, with well-delineated claims that aim to carve out a defensible market niche. Its validity hinges on thorough prior art curation and claim drafting precision. As the patent landscape evolves, continuous monitoring for potential infringements or challenges will be essential for maintenance of its competitive edge.


Key Takeaways

  • Robust Claim Strategy: The patent employs layered claims to guard its core innovation while allowing flexibility.
  • Strategic Positioning: It manages to position itself within a competitive landscape through specific, non-obvious features.
  • Legal Resilience: Strong prosecution history and detailed description likely bolster enforceability.
  • Monitoring Necessity: Ongoing vigilance against emerging prior art is critical to sustain patent rights.
  • Portfolio Value: The patent is a strategic asset, potentially serving as a foundation for licensing or litigation.

FAQs

1. What makes the claims of U.S. Patent 10,434,176 unique?
The claims are distinctive due to their focus on a specific chemical modification or delivery mechanism that was not previously disclosed in prior art, providing a novel approach with demonstrable technical advantages.

2. How does the patent landscape impact the enforceability of this patent?
A crowded patent landscape with similar inventions requires careful FTO analyses. Overlapping claims from prior patents could challenge its validity or scope, emphasizing the importance of clear claim distinctions and diligent prosecution.

3. Can the '176 patent face invalidation challenges?
Yes, if prior art surfaces that anticipate or render the claims obvious, competitors can initiate invalidation proceedings. Maintaining patent strength involves continuous novelty assessments and claim defensibility.

4. What strategic considerations should patent holders track post-grant?
They should monitor relevant scientific developments, patent filings, and legal rulings to defend their patent rights effectively, pursue licensing opportunities, and plan for potential patent term extensions.

5. How might this patent influence future innovations in its field?
By establishing a protected technological approach, the patent can stimulate further research, licensing activity, and collaborative development, shaping the direction of innovation in its technical area.


References

[1] United States Patent and Trademark Office. Patent No. 10,434,176.
[2] Patent prosecution file history.
[3] Scientific literature related to similar chemical compounds and delivery systems.
[4] Patent landscape analyses in relevant therapeutic fields.

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Details for Patent 10,434,176

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 July 26, 2007 10,434,176 2036-07-15
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 October 02, 2009 10,434,176 2036-07-15
Csl Behring Ag PRIVIGEN immune globulin intravenous (human), 10% liquid Injection 125201 February 07, 2013 10,434,176 2036-07-15
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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