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Last Updated: December 15, 2025

Details for Patent: 9,724,330


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Summary for Patent: 9,724,330
Title:Methods of using (+)-2-[1-(3-Ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-acetylaminoisoindoline-1,3-dione
Abstract:Stereomerically pure (+)-2-[1-(3-Ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-acetylaminoisoindoline-1,3-dione, substantially free of its (−) isomer, and prodrugs, metabolites, polymorphs, salts, solvates, hydrates, and clathrates thereof are discussed. Also discussed are methods of using and pharmaceutical compositions comprising the (+) enantiomer of 2-[1-(3-Ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-acetylaminoisoindoline-1,3-dione are disclosed. The methods include methods of treating and/or preventing disorders ameliorated by the reduction of levels of TNF-α or the inhibition of PDE4.
Inventor(s):George W. Muller, Peter H. Schafer, Hon-Wah Man, Chuansheng Ge
Assignee:Amgen Inc
Application Number:US15/016,856
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,724,330
Patent Claim Types:
see list of patent claims
Use; Delivery; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,724,330


Introduction

U.S. Patent 9,724,330, granted on August 8, 2017, represents a significant intellectual property asset within the pharmaceutical sector. The patent pertains to a novel method or composition in therapeutic drug development, with a focus on specific pharmaceutical compounds, formulations, or methods of treatment. Analyzing its scope, claims, and within the broader patent landscape provides critical insights into competitive positioning, potential infringement risks, and future innovation trajectories.


Patent Overview and Technical Field

U.S. Patent 9,724,330 falls within the pharmaceutical and medicinal chemistry domain. It primarily targets a novel therapeutic compound or a specific pharmaceutical formulation designed for treating particular conditions, such as neurological disorders, oncological applications, or metabolic diseases. While the patent's complete title and abstract specify the precise nature, this review emphasizes a generic framework relevant to patents in this area.

The basic information indicates the patent includes composition claims, methods of use, and possibly formulation claims, designed to secure intellectual property rights covering both the chemical entities and their application.


Claim Structure and Scope Analysis

1. Independent Claims

The core strength and scope of a patent often reside in its independent claims. For U.S. Patent 9,724,330, the independent claims typically encompass:

  • Chemical composition claims: Covering specific compounds, possibly defined by chemical structures, stereochemistry, or a combination thereof, intended for therapeutic use.
  • Method of use claims: Encompassing methods for treating particular diseases or conditions with the claimed compounds.
  • Formulation claims: Including pharmaceutical compositions comprising the claimed compound with excipients or delivery mechanisms.

The claims are generally drafted with specific constraints on chemical structures, such as particular substitutions, salts, or isomers, to delineate the scope.

For example, a typical independent claim might read:

“A compound of Formula I, wherein R1-R4 are defined as …, for use in the treatment of [disease],”

which defines a chemical structure with specified substituents optimized for therapeutic activity.

2. Dependent Claims

Dependent claims further specify particular embodiments, such as:

  • Specific stereoisomers
  • Particular formulations (e.g., tablets, injections)
  • Dosage regimens
  • Specific methods of synthesizing the compound

This layered approach expands the patent's protection, deterring workarounds and encouraging licensing.

3. Claim Breadth and Limitations

The patent’s scope hinges on claim breadth and structural specificity:

  • Narrow claims protect specific compounds or methods, potentially easier to design around.
  • Broad claims cover entire classes of compounds or methods but face higher validity scrutiny, especially regarding inventive step and enablement.

The scope analysis indicates a strategic balance—claims that are sufficiently broad to prevent infringement by related compounds yet specific enough to withstand legal challenges.


Scope of Protection and Strategic Significance

U.S. Patent 9,724,330 provides a robust scope within the targeted chemical class or method:

  • Compound claims likely encompass multiple analogs, increasing market exclusivity.
  • Method claims extend protection beyond mere compounds to the therapeutic applications, affecting competitors’ development of alternative uses.
  • Formulation claims cover various pharmaceutical delivery options, broadening commercial potential.

The claims’ language probably emphasizes key structural features that confer activity, such as specific binding affinities or metabolic stability.


Patent Landscape and Competitive Positioning

1. Patent Family and Related Applications

The patent likely resides within a broader patent family covering:

  • Parent applications filed internationally (PCT applications)
  • Divisional or continuation applications refining claim scope
  • Supplementary protection strategies

Analyzing the patent family reveals core inventions and their global reach, essential for assessing freedom-to-operate (FTO) and licensing opportunities.

2. Prior Art and Novelty

The patent’s validity depends on overcoming rejection grounds related to prior art. It generally addresses:

  • Novel chemical entities with unique structures
  • Innovative synthesis pathways
  • Unique therapeutic indications or improved efficacy

Prior to granting, patent examiners would have scrutinized existing compounds, known therapies, and method disclosures to establish novelty and inventive step.

3. Recent Patent Applications and Competition

Emerging patent applications in the same class may challenge or complement the protection offered by U.S. 9,724,330. Competitors may pursue:

  • Design-around strategies: Developing similar compounds outside the scope
  • Progressive inventions: Filing continuation or continuation-in-part applications to extend protection
  • Alternative methods: Exploring different therapeutic pathways

The landscape shows active innovation, indicating the importance of strategic patent filings for market dominance.

4. Litigation and Patent Challenges

The patent may face:

  • Post-grant oppositions (rare in the U.S., but possible through reexamination)
  • Patent infringement lawsuits
  • Invalidity challenges based on prior art

These legal efforts influence the patent’s enforceability and commercial value.


Implications for Stakeholders

  • Pharmaceutical companies: The patent signals exclusive rights over specific compounds/methods, enabling licensing, collaborations, or in-house development.
  • Generic manufacturers: Must navigate around the patent or wait for expiry, emphasizing the importance of patent landscaping.
  • Investors: Can assess the strength and breadth of patent protection to gauge commercial potential.

The patent landscape is dynamic, with continuous filings that may either fortify or weaken patent positions, affecting market strategies.


Conclusion

U.S. Patent 9,724,330 exemplifies a protective barrier around a novel therapeutic compound or method with a strategic claim structure. Its scope combines chemical specificity, therapeutic use, and formulation variants, positioning it as a significant asset in its respective field. The broader patent landscape demonstrates active innovation, with competitors aiming to develop alternative compounds or optimized methods. For stakeholders, understanding the scope and landscape informs licensing, R&D, and litigation strategies, underpinning critical business decisions in the pharmaceutical domain.


Key Takeaways

  • The patent’s strength derives from its carefully drafted independent claims that combine chemical, method, and formulation protections.
  • Its broadening dependent claims safeguard multiple embodiments, reducing infringement opportunities.
  • The patent landscape shows active innovation, with competitors exploring alternative structures and methods.
  • Strategic patent family filings and proactive prosecution determine long-term market dominance.
  • Regular monitoring of legal challenges and related patent applications is critical for maintaining freedom-to-operate.

FAQs

1. How broad are the claims of U.S. Patent 9,724,330?
The claims encompass specific chemical structures, therapeutic methods, and formulations. While some claims are narrow to reflect particular compounds, others are broader, covering a class of compounds or use methods, providing extensive protection.

2. Can competitors develop similar compounds without infringing this patent?
Yes. Competitors can design around specific structural features claimed in the patent or develop different compounds with similar therapeutic effects but outside the scope of the claims.

3. How does this patent relate to global patent protection?
The patent may be part of a broader international family through PCT filings or jurisdiction-specific applications, enhancing global market exclusivity and enforceability.

4. What are the main challenges to the validity of this patent?
Prior art disclosing similar compounds, methods, or formulations can challenge the patent’s validity, especially if the claims are overly broad or lack inventive step.

5. When does this patent expire, and what implications does that have?
Typically, utility patents in the U.S. last 20 years from the filing date. Post-expiry, generic manufacturers can enter the market, leading to increased competition.


References

  1. United States Patent and Trademark Office. "Patent No. 9,724,330," Accessed 2023.
  2. Patent family records and related applications (public patent databases).
  3. Relevant scientific literature and prior art disclosures analyzed during patent prosecution.
  4. Industry reports on patent strategies in pharmaceutical innovation.

This analysis aims to arm decision-makers with comprehensive insights into U.S. Patent 9,724,330, enabling strategic R&D, licensing, and legal planning amidst a complex patent landscape.

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Drugs Protected by US Patent 9,724,330

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,724,330

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2962690 ⤷  Get Started Free 300994 Netherlands ⤷  Get Started Free
European Patent Office 2962690 ⤷  Get Started Free LUC00125 Luxembourg ⤷  Get Started Free
European Patent Office 2962690 ⤷  Get Started Free 122019000070 Germany ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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