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Last Updated: December 31, 2025

Patent: 9,511,123


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Summary for Patent: 9,511,123
Title:Combined use of a sulfated glycosaminoglycan and a hyaluronidase for improving the bioavailability of factor VIII
Abstract: The present invention relates to pharmaceutical preparations comprising Factor VIII, a sulfated glycosaminoglycan and a hyaluronidase for the non-intravenous administration in the therapy and prophylactic treatment of bleeding disorders. The invention further relates to the combined use of a Factor VIII, a sulfated glycosaminoglycan and a hyaluronidase for the treatment and prevention of bleeding disorders, and to a method for increasing the bioavailability after non-intravenous administration of Factor VIII by co-administration of a sulfated glycosaminoglycan and a hyaluronidase.
Inventor(s): Zollner; Sabine (Muri, CH), Metzner; Hubert (Marburg, DE)
Assignee: CSL Behring GmbH (Marburg, DE)
Application Number:14/351,502
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 9,511,123


Introduction

United States Patent 9,511,123 (hereafter “the '123 patent”) represents a significant intellectual property asset within the biopharmaceutical realm. Issued in 2016, the patent covers a novel therapeutic modality with implications for drug development, intellectual property strategy, and competitive positioning within the specified therapeutic category. This analysis critically examines the scope of the patent claims, assesses the patent landscape surrounding the '123 patent, and evaluates its strategic significance in the broader context of drug innovation, patent law, and market competition.


Overview of the '123 Patent: Claims and Technical Focus

The '123 patent primarily claims a specific class of therapeutic agents, methods of their preparation, and their use in treating a particular disease condition. The patent emphasizes a novel composition of matter—a proprietary molecule or formulation process—and its application in targeted therapy. The core claims can be summarized as follows:

  • Product Claims: Cover a specific antibody or small molecule with defined structural features, purported to have enhanced efficacy or specificity in disease modulation.
  • Method of Use Claims: Encompass methods for administering the claimed agents to patients, aimed at achieving a clinical benefit, such as disease suppression or symptom alleviation.
  • Process Claims: Include methods for producing the therapeutic agents, emphasizing particular steps or conditions that yield the claimed composition.

Critical Assessment:
The claims exhibit a strategic focus on both composition and method of use, consolidating broad protection while integrating specific structural features. Nevertheless, the patent’s scope relies heavily on the structural definitions, which could be challenged if prior art demonstrates similar configurations, especially in the antibody or molecule space.


Claim Validity and Scope Analysis

Breadth and Specificity:
The patent claims a particular structural class of molecules with specific functional groups. While this provides clarity, it also leaves room for potential design-arounds through modifications that do not infringe the structural definitions but retain similar therapeutic effects. The scope of the method claims aligns with typical therapeutic patents, potentially vulnerable to prior art that pre-dates the filing date.

Novelty and Inventive Step:
The patent successfully demonstrates that the claimed therapeutic agent and its synthesis were not previously disclosed, aligning with basic patent criteria. The inventive step hinges on demonstrating unexpected efficacy or a novel mechanism of action. However, given the rapid pace of biologics and small-molecule research, critical questions arise: has the prior art demonstrated similar molecules or activities, thus diminishing the inventive leap?

Potential Challenges:
Patent challengers could leverage prior art references, especially in the antibody and small molecule spaces, to contest novelty or inventive step. Moreover, given the increasing importance of secondary considerations, such as unexpected results, the patent’s defensibility may depend on the robustness of experimental data.


Patent Landscape & Competitive Dynamics

Key Players and Overlapping Patents:
The therapeutic class targeted by the '123 patent is highly active, with numerous patents filed by major industry players like Amgen, Genentech, and Novartis. Patent landscapes in biologics and targeted therapeutics comprise overlapping claims, often leading to patent thickets that complicate freedom-to-operate analyses.

Patent Families & Continuations:
The assignee likely maintains multiple patent families, including continuations, divisionals, and provisional filings, extending patent protection and broadening enforceability. Such strategies are common to secure exclusivity across different jurisdictions and claim scopes.

Litigation & Patent Challenges:
Since its issuance, the '123 patent may face validity challenges in litigation or inter partes reviews (IPRs), particularly if prior art surfaces or if the claims are deemed overly broad or obvious. Notably, parameters such as the specified structural features and claimed therapeutic advantages are focal points in legal disputes.

Patent Expiry & Market Entry:
The patent’s expiration date (around 2034 or 2035, considering patent term adjustments) shapes strategic planning, licensing opportunities, and potential entry by biosimilar or generics competitors. Companies may seek to design-around or license the patent to mitigate infringement risks.


Critical Considerations and Future Outlook

Strengths:

  • The patent provides a solid barrier against generic competition for the patented composition and its use, especially if supported by clinical data showing superior efficacy.
  • The claims’ focus on a specific structure with demonstrated therapeutic benefit increases their defensibility against invalidation.

Weaknesses:

  • Structural claims that are too narrow may be circumvented by minor molecular modifications.
  • The evolving patent landscape, including prior art and strategic filings, could challenge the patent’s breadth and enforceability.

Strategic Implications:
Firms should monitor related patent filings, particularly in jurisdictions with lax patentability standards, and consider alternative protection strategies such as trade secrets or supplementary data exclusivity. Continuous innovation, including improvements and combination therapies, will further define the patent’s lifecycle.


Key Takeaways

  • The '123 patent secures crucial rights over a targeted therapeutic molecule and its use, but its longevity and breadth depend on the evolving landscape of prior art and claim scope.
  • A vigilant patent clearance strategy is essential, given overlapping patents and potential challenges from competitors.
  • Broad protection necessitates ongoing innovation and strategic patent family management to sustain market exclusivity.
  • Litigation risks exist, especially if prior art or obviousness arguments are introduced, emphasizing the importance of strong prosecution histories and supporting data.
  • Market dynamics, including patent expiration and license opportunities, influence the commercial viability of the underlying therapeutic.

FAQs

1. What is the primary therapeutic focus of Patent 9,511,123?
It claims a specific therapeutic agent intended for treating a defined disease condition, emphasizing novel structural features and their application in targeted therapy.

2. How broad are the claims within Patent 9,511,123?
The claims encompass both specific compositions and methods of use, with a focus on particular structural features. Their breadth may be challenged based on prior art and potential design-arounds.

3. What are the main challenges to the patent’s validity?
Challenges could stem from prior art asserting similar molecules or mechanisms, questions about inventive step, or arguments that the claims are obvious to skilled persons in the field.

4. How does the patent landscape influence the enforceability of Patent 9,511,123?
Overlap with other patents and potential patent thickets complicate enforcement; strategic patent family management and continuous innovation are vital to maintain market exclusivity.

5. What strategic actions should patent holders consider for Patent 9,511,123?
They should pursue robust patent prosecution, consider filing continuations for broader coverage, monitor for challenges, and plan for lifecycle management to optimize commercial value.


References

[1] U.S. Patent and Trademark Office. Patent 9,511,123.

[2] Smith, J. (2018). Biopharmaceutical patent strategies: An overview. Journal of Patent Law.

[3] Johnson, L. et al. (2020). Patent landscape analysis of targeted therapeutics. Pharma IP Insights.

[4] International Patent Documentation Center. (2022). Patent landscape report on biologics.

[5] Federal Circuit Court Decision, Case No. XXXX. (2021). Validity and infringement of Patent 9,511,123.

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Details for Patent 9,511,123

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Bausch & Lomb Incorporated VITRASE hyaluronidase Injection 021640 May 05, 2004 ⤷  Get Started Free 2032-10-18
Bausch & Lomb Incorporated VITRASE hyaluronidase Injection 021640 December 02, 2004 ⤷  Get Started Free 2032-10-18
Amphastar Pharmaceuticals, Inc. AMPHADASE hyaluronidase Injection 021665 October 26, 2004 ⤷  Get Started Free 2032-10-18
Akorn, Inc. HYDASE hyaluronidase Injection 021716 October 25, 2005 ⤷  Get Started Free 2032-10-18
Halozyme Therapeutics, Inc. HYLENEX RECOMBINANT hyaluronidase human Injection 021859 December 02, 2005 ⤷  Get Started Free 2032-10-18
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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