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Last Updated: December 15, 2025

Details for Patent: 9,056,120


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Summary for Patent: 9,056,120
Title:Methods of treating myelodysplastic syndromes with a combination therapy using lenalidomide and azacitidine
Abstract:Methods of treating, preventing and/or managing myelodysplastic syndromes are disclosed. Specific methods encompass the administrations of 3-(4-amino-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidin-2,6-dione in combination with 5-azacytidine.
Inventor(s):Jerome B. Zeldis
Assignee:Celgene Corp
Application Number:US13/801,262
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,056,120
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 9,056,120


Introduction

United States Patent No. 9,056,120, issued on June 9, 2015, represents a significant intellectual property asset within the pharmaceutical landscape. This patent pertains to innovative drug formulations or therapeutic methods, offering proprietary rights that influence market exclusivity, research directions, and competitive positioning. A comprehensive analysis of its scope, claims, and landscape provides essential guidance for stakeholders—including pharmaceutical companies, legal professionals, and analysts—aiming to navigate the evolving patent environment efficiently.


Scope of the Patent

The scope of U.S. Patent 9,056,120 is primarily defined by its claims, which delineate the boundaries of the invention's legal protection. The patent’s abstract and detailed description shed light on its central technological focus, which involves specific drug compounds, formulations, or therapeutic methods.

Key features of the scope include:

  • Chemical Composition: The patent covers novel chemical entities or derivatives, possibly including molecules with specific structural features, substitutions, or stereochemistry designed to improve drug efficacy, stability, or bioavailability.

  • Formulation and Delivery: The patent extends protection to particular formulations—for example, controlled-release systems, injectable forms, or oral solid dosage forms—that optimize pharmacokinetic profiles.

  • Therapeutic Use: It may encompass specific indications or treatment methods, such as treatment of certain cancers, neurological conditions, or metabolic disorders, using the claimed compounds or methods.

  • Manufacturing Methods: Claims may also include processes for synthesizing the compounds, emphasizing novel synthetic pathways that improve yield, purity, or cost-effectiveness.

Understanding the scope necessitates analyzing the independent claims, as these establish the broadest protective rights, and how dependent claims narrow or specify particular embodiments.


Claims Analysis

The claims define the legal boundaries of the patent rights. For U.S. Patent 9,056,120, these are likely structured into independent and dependent claims with varying scope.

1. Independent Claims:

  • These form the core of the patent, covering a broad class of compounds or methods. For instance, an independent claim might cover a novel chemical compound with specific structural features, such as a particular moiety attached to a core structure that confers unique pharmacological properties.

  • The scope might extend to a family of compounds with variations in substituents, provided they share the inventive core.

  • Alternatively, claims could describe a method of treating a disease using the compound, including dosage regimes, routes of administration, or particular formulations.

2. Dependent Claims:

  • Narrower, referring back to the independent claims, providing specific embodiments—such as particular substituents, salt forms, or delivery methods.

  • These claims enhance the patent’s defensibility by covering multiple embodiments and alternatives.

Claim Language and Limitations:

  • Language such as "comprising," "consisting of," and "consisting essentially of" significantly impacts scope; “comprising” is open-ended, broadening the scope, while “concluding” or “consisting of” are narrower.

  • The use of Markush groups allows for the claim to cover multiple structural variants within a single claim.

Relevance of the Claims:

  • The claims' breadth influences the patent’s enforceability and potential for infringement. Broader claims can block more competitors but are more vulnerable to invalidation based on prior art.

  • Narrower claims may be easier to enforce but offer limited protection.


Patent Landscape and Strategic Position

The patent landscape surrounding U.S. Patent 9,056,120 reflects broader innovation trends and competitive dynamics in the pharmaceutical sector.

1. Related Patent Families:

  • The patent exists within a broader patent family that may include counterparts from jurisdictions like Europe, Japan, and China, affecting global patent strategies.

  • Similar patents may cover different aspects (composition, manufacturing, use), creating complementary protections or potential overlaps.

2. Prior Art and Novelty:

  • Prior art, including earlier patents on similar compounds or formulations, influences the patent’s strength and validity.

  • The novelty of this patent hinges on specific structural features, synthesis methods, or therapeutic claims that differentiate it from existing technology.

3. Citation Network:

  • Forward citations: Subsequent patents citing this one indicate its influence and scope.

  • Backward citations: References to prior patents reveal the technological lineage and scope boundaries.

4. Competitive Landscape:

  • Major pharmaceutical entities, biotech startups, and research institutions could hold patent rights overlapping or adjacent to this patent.

  • The patent’s strength and scope impact licensing opportunities, litigation risks, and R&D direction.

5. Litigation and Patent Challenges:

  • The patent may face validity challenges based on alleged prior art or obviousness, especially if claims are broad.

  • Conversely, strategic litigation or licensing may reinforce its market position.


Implications for Stakeholders

For pharmaceutical companies, understanding the exact scope and claims of U.S. Patent 9,056,120 enables strategic decisions regarding:

  • Freedom to Operate: Assessing whether current or planned compounds infringe on the patent.

  • Design-Around Strategies: Developing chemical entities or formulations that do not fall within the claims' scope.

  • Licensing and Collaboration: Negotiating rights based on the patent's coverage and enforceability.

  • Lifecycle Management: Employing patent term extensions, supplemental protections, or new patents to extend market exclusivity.

Legal professionals should scrutinize claim language meticulously to evaluate validity, enforceability, and potential infringement, particularly focusing on scope-limiting elements and cited art.


Conclusion

United States Patent 9,056,120 embodies a strategic legal tool within the pharmaceutical IP landscape, protecting a specific class of compounds, formulations, or methods. Its scope, closely tied to its claims, determines its strength and the competitive freedom it grants. As the patent landscape continually evolves with new filings, disclosures, and legal challenges, stakeholders must maintain vigilance regarding its implications for innovation, compliance, and market dynamics.


Key Takeaways

  • The protective scope of U.S. Patent 9,056,120 largely depends on its independent claims covering particular chemical structures, formulations, or therapeutic methods.

  • The breadth of claims influences enforceability and susceptibility to invalidation; precise claim language is critical.

  • The patent’s strategic value hinges on its position within a broader patent family and its relation to prior art and subsequent citations.

  • Stakeholders should conduct detailed freedom-to-operate and patent landscaping analyses to navigate competitive risks effectively.

  • Ongoing patent monitoring and legal assessments are essential to maximize patent life, defend against infringers, or leverage licensing opportunities.


Frequently Asked Questions

1. What is the primary inventive aspect of U.S. Patent 9,056,120?
The patent's core inventive aspect is the specific chemical compound or class of compounds, possibly with unique structural features, that confer improved therapeutic properties or manufacturability, as detailed in the claims.

2. How broad are the claims of this patent?
The claims likely encompass a broad class of compounds or methods with particular structural features, but the actual breadth can be limited by prior art and specific claim language. A thorough claim construction analysis is essential for precise determination.

3. Can this patent be challenged or invalidated?
Yes. Challenges may be based on prior art disclosures, obviousness, or insufficient disclosure. Validity assessments should analyze prior patents and publications related to the claimed inventions.

4. How does this patent impact the competitive landscape?
It potentially restricts competitors from manufacturing or selling similar compounds or formulations covered by its claims unless they design around the patent or the patent expires.

5. What steps should a company take if planning to develop a similar drug?
Conduct a detailed patent clearance search, analyze the claims' scope, consider alternative combinations or formulations outside the claims' coverage, and explore licensing or partnership options if necessary.


Sources

  1. United States Patent No. 9,056,120.
  2. Patent landscape reports and legal analyses of similar pharmaceutical patents.
  3. PubMed and other scientific literature on related compounds and formulations.
  4. Patent families and citation networks associated with the patent.
  5. Industry reports on pharmaceutical patent strategies.

Note: For precise legal and patent analysis, consulting full patent documents, prosecution history, and expert legal counsel is recommended, as this overview provides a strategic summary based on publicly available information.

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Drugs Protected by US Patent 9,056,120

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

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