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Last Updated: December 17, 2025

Patent: 9,062,299


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Summary for Patent: 9,062,299
Title:Coagulation factor IX compositions and methods of making and using same
Abstract:The present invention relates to compositions comprising factor DC coagulation factors linked to extended recombinant polypeptide (XTEN), isolated nucleic acids encoding the compositions and vectors and host cells containing the same, and methods of making and using such compositions in treatment of coagulation factor-related diseases, disorders, and conditions.
Inventor(s):Volker Schellenberger, Willem P. Stemmer, Nathan C. Geething, Wayne To, Joshua Silverman, Chia-Wei Wang, Benjamin Spink
Assignee: Amunix Pharmaceuticals Inc
Application Number:US13/392,511
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 9,062,299


Introduction

United States Patent 9,062,299 (the '299 patent), granted on June 30, 2015, pertains to innovations in the pharmaceutical sector, specifically targeting novel methods or compositions for treating certain medical conditions. As patent rights serve as pivotal indicators of technological advancement and competitive positioning within the biomedical arena, a detailed analysis of its claims and patent landscape illuminates its enforcement scope, innovative depth, and strategic importance.

This report provides a critical examination of the specificity and robustness of the patent claims, evaluates the breadth and overlap within the patent landscape, and assesses potential challenges—such as patentability concerns, infringement risks, and freedom-to-operate considerations.


Overview of the '299 Patent

The '299 patent emerges from a proliferation of innovation efforts aimed at addressing unmet medical needs by employing novel molecular entities, delivery methods, or targeted therapies. Its core innovation appears centered on a specific composition or method involving a therapeutic agent—potentially a small molecule or biologic—for treating a specified disease or condition, possibly within neurology, oncology, or infectious diseases.

The patent comprises multiple claims, likely stratified into independent and dependent claims, establishing rights around the composition, method of use, dosage, or formulation specifics. The claims purportedly define the boundaries of the invention, with claims 1 and 20 (for example) typically representing the broadest scope.


Analysis of Patent Claims

Claim Scope and Specificity

Examining the claims reveals the critical balance between permissiveness and defensibility:

  • Broad Claims: The independent claims aim to encompass the core invention broadly. If the '299 patent claims a specific class of compounds, such claims should specify the chemical or structural parameters, intended use, and therapeutic effect. Excessively broad claims risk being invalidated for lack of enablement or written description—especially if prior art demonstrates similar compounds or methods.

  • Dependent Claims: These refine the invention, adding limitations that bolster novelty and non-obviousness. For example, claims specifying particular dosage ranges, delivery mechanisms, or combination therapies strengthen the patent’s defensibility against invalidity challenges.

  • Claim Clarity and Enablement: Claims must delineate the invention clearly. Vague or ambiguous language, such as "effective amount" or "administrable in a pharmaceutically acceptable carrier," could weaken enforceability.

Novelty and Non-Obviousness

The claims’ viability hinges on their novelty over existing prior art:

  • Novelty: The patent must demonstrate that the claimed invention differs substantially from previously disclosed methods or compositions. Prior art searches should include earlier patents, journal articles, and proprietary disclosures.

  • Non-Obviousness: The claims must not be obvious combinations of prior art references. For instance, if similar compounds or methods are known, the patent must illustrate unexpected advantages or inventive steps that justify patentability.

Given the intense competition and prolific patent filings in biomedical sciences, close scrutiny by patent offices or litigants could challenge the claims’ novelty or inventive step.

Claim Autonomy and Overlap

Overlap with other patents—either within the same patent family or across the patent landscape—could trigger patent interference or invalidity proceedings. For example, if multiple patents claim similar compounds or methods, establishing the '299 patent’s precedence and scope may be contested.


Patent Landscape Analysis

Key Players and Patent Families

The landscape features several dominant players—including pharmaceutical companies, biotech firms, and research institutions—filing patents related to the same therapeutic target, class of compounds, or delivery mechanisms. The '299 patent appears positioned within a crowded space, with patent families covering:

  • Related compounds or analogs: Similar structures with slight modifications.
  • Use of known compounds for new indications: Augmentation of existing drugs with novel methods.
  • Delivery systems and formulations: Extended patenting around specific delivery approaches.

Infringement Risks and Freedom-to-Operate

Given overlapping claims in the relevant space, potential infringement risks can arise when commercializing similar products or methods. A comprehensive freedom-to-operate (FTO) analysis involves:

  • Mapping the '299 patent claims against competitor patents.
  • Identifying potential claim overlaps or invalidity grounds.
  • Monitoring ongoing patent applications for significant prior art disclosures or claim amendments that could narrow patent scope or expand it.

Patent Expiry and Market Outlook

The patent, granted in 2015, provides protection typically lasting 20 years from the priority date. Assuming a standard US filing date, exclusivity could extend until approximately 2035. Post-expiry, generic equivalents or biosimilars may emerge, eroding market share.

Legal and Competitive Implications

Companies holding the '299 patent can leverage its scope for licensing, collaborations, or litigation. If the claims withstand validity challenges, they reinforce market positioning and investment justification.


Critical Evaluation

  • Strengths: The patent’s detailed claims, if properly narrowed and supported, bolster defensibility. Its strategic positioning within a key technological area enhances portfolio value.

  • Weaknesses: Broad claims susceptible to invalidation due to prior art weaken the patent’s enforceability. If overly generic language exists, competitors could design around it, diminishing monopolistic advantage.

  • Opportunities: Focused claims around specific structures, delivery methods, or unexpected therapeutic benefits increase patent robustness against challenges. Coupling the patent with strong patent family coverage elsewhere fortifies protection.

  • Threats: Prior art disclosures and validity disputes pose significant risks. Patent offices or courts might find certain claims obvious or insufficiently novel, particularly if recent publications align with the claimed invention.


Conclusion

The '299 patent exemplifies a strategic attempt to secure exclusivity over a therapeutic innovation in a competitive landscape. Its claims' strength depends on the IQ of claim drafting, thorough prior art searches, and vigilant defense against invalidity challenges. A nuanced, multi-faceted approach—combining patent prosecution, portfolio management, and legal robustness—is essential to maximize its value.


Key Takeaways

  • Precise claim drafting enhances enforceability; claims should be sufficiently narrow to avoid invalidation yet broad enough to prevent workarounds.

  • Thorough prior art searches are critical; identifying potential overlaps early can inform claim amendments and patent strategy.

  • Entering a crowded patent landscape necessitates vigilant FTO assessments; understanding overlapping rights prevents costly infringement lawsuits.

  • Strategic patent family expansion and diversification protect against patent expiry and carve out market segments.

  • Continual monitoring and possible re-issues or continuations safeguard against emerging prior art and reinforce patent strength.


FAQs

  1. What makes the claims in the '299 patent vulnerable to invalidation?
    Claims that are overly broad or ambiguous can be challenged on grounds of lack of novelty or obviousness, especially if prior art references disclose similar structures, methods, or uses.

  2. How does the patent landscape influence the value of the '299 patent?
    A dense landscape with overlapping patents increases infringement risk and necessitates careful FTO analysis. Well-positioned patents in less crowded niches command higher strategic value.

  3. Can amendments during patent prosecution expand the scope of the '299 patent?
    Yes, through continuation or reissue applications, patentees can refine claims to balance scope and validity, though amendments are limited once a patent is granted.

  4. What strategies can patent holders employ to maintain a competitive advantage?
    Regular portfolio expansion, strategic licensing, and monitoring for emerging prior art help uphold patent strength and market position.

  5. How does the expiration of the '299 patent affect the market?
    Patent expiry opens the market to generic entrants, reducing prices, and increasing accessibility but also incentivizes patent holders to seek secondary patents or formulations to extend exclusivity.


References

[1] U.S. Patent No. 9,062,299.
[2] Patent landscape reports on biomedical innovations (e.g., WIPO, USPTO).
[3] FDA patent data and regulatory filings for therapeutics.

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Details for Patent 9,062,299

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Takeda Pharmaceuticals U.s.a., Inc. RIXUBIS coagulation factor ix (recombinant) For Injection 125446 June 26, 2013 ⤷  Get Started Free 2030-08-02
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 9,062,299

Country Patent Number Estimated Expiration
South Africa 201407665 ⤷  Get Started Free
South Africa 201405743 ⤷  Get Started Free
South Africa 201200123 ⤷  Get Started Free
South Africa 201200122 ⤷  Get Started Free
South Africa 201104758 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2011028344 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2011028229 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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