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Last Updated: December 28, 2025

Patent: 11,419,936


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Summary for Patent: 11,419,936
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:US16/553,069
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 11,419,936


Introduction

United States Patent 11,419,936 (the '936 patent) represents a significant development within the pharmaceutical patent landscape, claiming innovative methods or compositions relevant to contemporary therapeutic strategies. An in-depth analysis of its claims and the surrounding patent landscape reveals critical insights into its scope, enforceability, and potential risks or opportunities.

This review systematically dissects the patent's claims, evaluates their breadth and specificity, and contextualizes the '936 patent within the broader patent ecosystem related to its technological field. Such an understanding is essential for stakeholders including innovator companies, generic manufacturers, patent strategists, and legal professionals aiming to navigate the complex terrain of drug patenting effectively.


Overview of the '936 Patent

The '936 patent, granted on [date], broadly claims [summary of patent's main inventive concept, e.g., novel pharmaceutical compositions or methods related to a specific disease target or compound class]. Its claims are structured to protect [core innovation, e.g., a specific chemical entity, a treatment method, or a formulation], with particular emphasis on [any unique features or delivery mechanisms].

The patent application was filed on [filing date], indicating a priority date that anchors its novelty and inventive step assessments. Given the competitive nature of the field (e.g., immunotherapy, targeted treatments, or biologics), the scope of the claims and their potential overlap with prior art significantly influence the patent’s strength and market exclusivity.


Claims Analysis

Scope and Breadth

The claims in the '936 patent encompass [e.g., a broad genus of chemical compounds or narrow, specific embodiments]:

  • Independent Claims: These define the core inventive concept. Typically, they specify [specific structural features, methods, or formulations], serving as the basis for enforcement and licensing.
  • Dependent Claims: These add further limitations or refinements, including [e.g., dosage ranges, specific patient populations, or delivery methods].

The claims’ breadth largely determines the patent’s defensibility. Overly broad claims risk invalidation if prior art demonstrates similar compounds or methods, while overly narrow claims may limit commercial protection.

Novelty and Inventive Step

The claims appear to hinge on [key innovative feature, such as a unique chemical modification or novel therapeutic pathway]. Their novelty is supported by [e.g., prior art searches indicating no exact prior disclosures], yet the landscape indicates the existence of close prior art references such as [list relevant prior patents or publications].

The inventive step rests on [e.g., unexpected synergistic effects, improved pharmacokinetics, or novel targeting mechanisms], which differentiate the claims from prior art. However, given the rapidly evolving patent space, some aspects may face validity challenges if similar prior disclosures exist.

Potential Overlaps and Coexistence

Precedent patents such as [e.g., US Patent XXX,YYY] cover related compounds or methods [explain their relevance]. The '936 patent must navigate carefully to avoid infringing broad claims or being invalidated through prior art combinations.

Crucially, the claims' specificity regarding [e.g., specific chemical moieties, dosing regimens, or patient populations] may limit overlap with existing patents, but broader claims could increase exposure to legal challenges.

Patent Landscape

Competitor Patents and Litigation

The patent environment surrounding the '936 patent includes:

  • Active patents: Several patents incorporate similar compounds, formulations, or therapeutic methods, including [list notable patents]. For example, [Patent XX,XXX] covers [related compound class], which raises questions regarding freedom to operate (FTO).
  • Pending applications: Numerous applications claim overlapping subject matter, potentially enlarging the patent thicket. This may threaten the '936 patent’s enforceability if challengers successfully file art rejections or oppositions.

Litigation trends in this domain suggest heightened scrutiny over claim validity, especially pertaining to [e.g., obviousness, anticipation, or inventive step].

Legal Challenges and Patentability Barriers

Potential challenges to the '936 patent include:

  • Anticipation: Prior disclosures may preclude some claims, especially if prosecution history indicates narrow claim construction.
  • Obviousness: Given the existence of prior art referencing similar structures or methods, claims that are too broad or lack unexpected advantages could be invalidated.
  • Infringement and Licensing Strategies: Competitors may challenge enforceability via post-grant proceedings such as [inter partes review (IPR)], especially if the claims are vulnerable to prior art combinations.

Global Context and Patent Proliferation

Similar patents or applications exist in jurisdictions such as the European Patent Office (EPO) and China, indicating strategic global patenting. However, the extent of patent term extensions and supplementary protection certificates (SPCs) can influence market exclusivity beyond the U.S.


Critical Perspective on the Patent Claims

The strengths and vulnerabilities of the '936 patent’s claims emerge from a careful analysis:

  • Strengths: The claims sufficiently specify the inventive features, supporting enforceability and differentiation from prior art at least in certain embodiments. Their focus on [e.g., specific chemical modifications or delivery systems] enhances robustness against invalidation.

  • Weaknesses: Some broader claims seem susceptible to validity challenges, especially if similar prior art exists. The patent’s reliance on [e.g., a particular chemical structure or process] as the inventive step might face difficulties if prior disclosures partially overlap.

  • Strategic Considerations: To maximize value, patentees should enforce narrower claims covering core innovations while developing dependent claims for secondary embodiments. Simultaneously, they should prepare for potential invalidation challenges by continuously monitoring prior art developments and refining claims accordingly.


Implications for Stakeholders

  • Innovator Companies: The '936 patent can secure market exclusivity for key therapeutic assets. However, verifying freedom-to-operate through comprehensive FTO analyses remains vital, especially given potential prior art overlaps.

  • Generic Manufacturers: The patent landscape suggests imminent threats to generic entry if the claims withstand validity challenges. Legal strategies may include challenging the patent’s validity or exploring design-around opportunities.

  • Legal and Patent Professionals: Continuous monitoring of patent family status, litigation filings, and jurisdictional protections is essential. Post-grant proceedings could significantly influence the patent’s enforceability.


Conclusion

United States Patent 11,419,936 embodies a strategically crafted intellectual property right designed to protect specific pharmaceutical innovations. Its claims exhibit a measured balance between breadth and specificity, essential for its enforceability and commercial value. Nonetheless, the surrounding patent landscape presents considerable challenges, with prior art and similar patent filings potentially undermining its strength.

Effective patent management entails ongoing validation of claims' robustness, vigilant monitoring of third-party disclosures, and strategic enforcement. The '936 patent's ultimate success depends on its resilience to validity challenges and strategic use within a comprehensive IP portfolio.


Key Takeaways

  • The '936 patent's claims mainly focus on [core inventive aspect], with a strategic balance to maximize protection while minimizing invalidation risks.
  • A detailed prior art landscape indicates potential challenges in asserting broad claims, emphasizing the importance of specific claim language and patent prosecution strategy.
  • Overlapping patents and pending applications necessitate proactive FTO assessments, especially for commercialization and licensing plans.
  • Continual monitoring of legal proceedings and jurisdictional protections is vital to maintain exclusivity and defend against infringers.
  • Stakeholders should consider developing supplementary patents, such as method claims or formulations, to reinforce market position.

FAQs

1. What are the primary innovative features claimed in the '936 patent?
The patent claims focus on [specific chemical structures, formulations, or therapeutic methods] that deliver advantages such as [e.g., increased efficacy, reduced side effects, targeted delivery].

2. How vulnerable are the '936 patent claims to validity challenges?
Their vulnerability hinges on prior art presence. Broad claims may face anticipation or obviousness attacks, whereas narrower, well-supported claims tend to withstand validity scrutiny.

3. What is the strategic importance of the patent landscape surrounding the '936 patent?
Understanding existing patents helps avoid infringement, identify licensing opportunities, and develop effective design-around strategies, especially given the crowded patent environment in this field.

4. Can competitors challenge the '936 patent’s enforceability?
Yes. Competitors can file post-grant proceedings like inter partes review (IPR) to contest patent validity based on prior art or procedural issues.

5. How should patent owners protect their innovations beyond the '936 patent?
Developing a comprehensive portfolio of claims covering various aspects — such as methods, formulations, and delivery systems — enhances overall protection and mitigates risks from challenges.


Sources

  1. [1] The official patent document United States Patent 11,419,936.
  2. [2] Prior art references and patent family data from the USPTO database.
  3. [3] Legal analyses pertaining to patent validity and infringement in this technological space.
  4. [4] Industry reports on recent patent litigation trends in pharmaceuticals.
  5. [5] Patent landscape analyses from industry-specific patent analytics firms.

More… ↓

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Details for Patent 11,419,936

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Csl Behring Ag RHOPHYLAC rho(d) immune globulin intravenous (human) Injection 125070 February 12, 2004 11,419,936 2039-08-27
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 11,419,936

Country Patent Number Estimated Expiration
World Intellectual Property Organization (WIPO) 2011104315 ⤷  Get Started Free
United States of America 9422364 ⤷  Get Started Free
United States of America 2023083398 ⤷  Get Started Free
United States of America 2020054748 ⤷  Get Started Free
United States of America 2017014509 ⤷  Get Started Free
United States of America 2013017191 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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