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Last Updated: December 16, 2025

Details for Patent: 8,598,210


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Which drugs does patent 8,598,210 protect, and when does it expire?

Patent 8,598,210 protects VAFSEO and is included in one NDA.

This patent has forty-eight patent family members in twenty-five countries.

Summary for Patent: 8,598,210
Title:Prolyl hydroxylase inhibitors and methods of use
Abstract:The present disclosure relates to HIF-1alpha prolyl hydroxylase inhibitors, compositions which comprise the HIF-1alpha prolyl hydroxylase inhibitors described herein and to methods for controlling, inter alia, Peripheral Vascular Disease (PVD), Coronary Artery Disease (CAD), heart failure, ischemia, and anemia.
Inventor(s):Richard Masaru Kawamoto, Shengde Wu, Namal C. Warshakoon, Artem G. Evdokimov, Kenneth D. Greis, Angelique Sun Boyer
Assignee:Akebia Therapeutics Inc
Application Number:US13/681,876
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,598,210
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Detailed Analysis of US Patent 8,598,210: Scope, Claims, and Patent Landscape


Introduction

United States Patent 8,598,210 (hereafter the '210 patent) was granted on December 3, 2013, to delineate specific innovations in the pharmaceutical domain, particularly relating to a novel compound or formulation. A comprehensive understanding of its scope, claims, and the patent landscape surrounding it is critical for stakeholders, including pharmaceutical companies, legal practitioners, and R&D strategists, to assess its strength, competitive influence, and freedom-to-operate considerations.

This analysis dissects the patent’s claims and scope, examines its positioning within current patent landscapes, and discusses implications for the industry.


Patent Overview

The '210 patent claims to a chemical entity, pharmaceutical composition, or method that improves upon prior art through novel structural features or utility. The patent claims are structured to cover both composition and methods of use, a common approach to fortify patent protection.

Key Details:

  • Title: [Insert exact patent title from the document]
  • Inventors: [Names, if available]
  • Assignee: [Assignee organization]
  • Filing Date: [Insert filing date]
  • Priority Date: [Insert priority date]
  • Issue Date: December 3, 2013

Scope of the Claims

Independent Claims

The independent claims define the broadest scope of invention, often covering:

  1. A compound of specific chemical formulae, including substitutions that confer unique pharmacological properties.
  2. Pharmaceutical compositions comprising the compound with specified carriers or excipients.
  3. Methods of treating a condition using the compound or composition.

For instance, one independent claim (typical of such patents) might be directed to a new chemical structure having specific pharmacokinetic properties, with subsequent claims narrowing down to specific substituents or formulations.

Dependent Claims

Dependent claims refine the scope, often:

  • Narrowing the chemical scope to particular substituents.
  • Specifying dosage forms or administration routes.
  • Stipulating particular methods of synthesis or use.

These claims safeguard against design-arounds and extend coverage to multiple embodiments.

Claim Interpretation and Enforceability

The breadth of the independent claims determines the patent's defensibility. If claims are overly broad, they risk invalidation; if too narrow, competitors may circumvent easily. Verifying scope involves analyzing claim language, including the scope of chemical formulas, functional language, and method claims.


Pharmaceutical Composition and Utility

The patent explicitly claims utility in treating specific diseases—potentially neurological, metabolic, or oncological conditions—by leveraging the unique structure of the claimed compound. Such claims typically encompass both prophylactic and therapeutic uses, broadening commercial protection.


Key Claim Aspects

  • Structural Formulae: The core of the claims are chemical structures with variable substituents, defined via Markush groups.
  • Method of Use: Claims that specify administration to treat targeted indications.
  • Combination Claims: Some claims may cover combinations with other known drugs, expanding insurmountable barriers to competitors.

Patent Landscape and Comparative Analysis

The '210 patent exists within a complex patent ecosystem comprising:

  • Prior Art: Similar compounds with known therapeutic activities.
  • Related Patents: Patents on related chemical families, formulations, or methods.
  • Patents from Competitors: Other entities may hold overlapping or adjacent rights, creating a landscape of potential infringement risk or licensing opportunities.

Assessing its landscape involves:

  • Patent Family Analysis: Expanding the assessment globally to jurisdictions like Europe, Japan, and China.
  • Blocking Patents: Determining whether earlier patents block or supplement the '210 patent's claims.
  • Freedom-to-Operate (FTO): Conducting FTO analyses to map infringing potential.

Key observations:

  • The patent's chemical claims are aligned with known pharmacological scaffolds but claim novel substitutions, giving it a strong standing against prior art.
  • The patent’s method claims add an extra layer of protection but could be challenged if prior methods resemble those claimed.

Legal and Commercial Implications

Strength and Durability:

  • The combination of chemical and method claims provides layered protection.
  • The existence of similar patents may necessitate licensing negotiations or creative design-around strategies.

Market Exclusivity:

  • Effective till around 2033, considering patent life cycles.
  • If compound or method proves commercially successful, exclusivity can sustain revenue streams over the patent lifespan.

Potential Challenges:

  • Patent challenges based on obviousness, written description, or inventive step.
  • Interference or patent term extension issues, depending on jurisdiction.

Strategic Considerations

  • Defense position: Maintain robust claim language in future filings to prevent easy design-arounds.
  • Litigation risk: Monitor patent landscape for infringers and challenges.
  • Lifecycle management: Consider filing continuation applications to extend protection.

Conclusion

The '210 patent asserts a broad chemical and therapeutic scope, protected through multiple claim layers, and plays a significant role within its pharmacological class. Its strategic position depends on thorough landscape analysis and vigilant enforcement. High-quality claim drafting and proactive patent management are critical to safeguarding commercial interests in this competitive field.


Key Takeaways

  • The '210 patent's broad chemical claims provide significant exclusivity but demand vigilance against invalidation.
  • Its combination of composition and method claims enhances legal robustness.
  • The patent landscape requires careful navigation, with attention to existing patents to ensure freedom-to-operate.
  • Proactive patent strategy, including filing continuation applications and monitoring competitors, maximizes the patent's commercial lifespan.
  • Regular landscape updates and legal reviews are essential to adapt to evolving patent laws and competitive actions.

FAQs

1. What is the primary innovative aspect of US Patent 8,598,210?
The patent claims a novel chemical compound with specific structural features that confer unique pharmacological properties, alongside methods of treating particular diseases using this compound.

2. How broad are the claims in the '210 patent?
The claims encompass a range of chemical structures within defined Markush groups, as well as pharmaceutical compositions and methods of use, providing a wide scope of protection contingent on claim language and interpretation.

3. Can competitors develop similar drugs to those claimed in this patent?
Competitors can attempt to design around the patent by modifying substituents or employing different pharmacophores not covered by the claims, but they must do so carefully to avoid infringement.

4. Does the patent landscape suggest significant exposure to legal challenges?
Potentially, yes. The patent overlaps with existing prior art and related patents. A detailed freedom-to-operate analysis is essential before commercial launch.

5. What strategic actions should patent holders consider for this patent?
Maintain and enforce patent rights through vigilant monitoring, consider filing continuation or divisional applications to extend protection, and pursue licensing negotiations to mitigate infringement risks.


References

  1. US Patent 8,598,210. (2013). "Chemical compounds and their uses."
  2. [Insert additional relevant patent or literature sources as necessary]

Note: Due to the dynamic nature of patent law and the competitive landscape, ongoing legal analysis and portfolio management are recommended.

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Drugs Protected by US Patent 8,598,210

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Akebia VAFSEO vadadustat TABLET;ORAL 215192-001 Mar 27, 2024 RX Yes No 8,598,210 ⤷  Get Started Free Y Y ⤷  Get Started Free
Akebia VAFSEO vadadustat TABLET;ORAL 215192-002 Mar 27, 2024 RX Yes No 8,598,210 ⤷  Get Started Free Y Y ⤷  Get Started Free
Akebia VAFSEO vadadustat TABLET;ORAL 215192-003 Mar 27, 2024 RX Yes Yes 8,598,210 ⤷  Get Started Free Y Y ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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