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Last Updated: December 19, 2025

Details for Patent: 7,652,069


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Summary for Patent: 7,652,069
Title:Polymorphs of suberoylanilide hydroxamic acid
Abstract:The present invention provides methods of selectively inducing terminal differentiation, cell growth arrest and/or apoptosis of neoplastic cells, and/or inhibiting histone deacetylase (HDAC) by administration of pharmaceutical compositions comprising potent HDAC inhibitors. The oral bioavailability of the active compounds in the pharmaceutical compositions of the present invention is surprisingly high. Moreover, the pharmaceutical compositions unexpectedly give rise to high, therapeutically effective blood levels of the active compounds over an extended period of time. The present invention further provides a safe, daily dosing regimen of these pharmaceutical compositions, which is easy to follow, and which results in a therapeutically effective amount of the HDAC inhibitors in vivo. The present invention also provides a novel Form I polymorph of SAHA, characterized by a unique X-ray diffraction pattern and Differential Scanning Calorimetry profile, as well a unique crystalline structure.
Inventor(s):Thomas A. Miller, Victoria M. Richon
Assignee:Merck HDAC Research LLC
Application Number:US11/981,367
Patent Claim Types:
see list of patent claims
Composition; Use; Formulation; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 7,652,069


Introduction

U.S. Patent 7,652,069, granted on January 5, 2010, embodies innovative intellectual property within the pharmaceutical sphere. It pertains to a specific drug compound, formulation, or use that provides a strategic advantage for patent holders in establishing exclusivity and safeguarding market share. This analysis dissects the patent's scope, claims, and its position within the broader patent landscape, equipping industry stakeholders with insights critical for strategic planning.


Patent Overview and Technical Background

The '069 patent primarily addresses a novel chemical entity, a specific pharmaceutical compound, method of use, or formulation that advances treatment efficacy or safety over prior art. It is classified within the Cooperative Patent Classification (CPC) system, likely under classes related to organic chemistry, pharmaceuticals, or medical preparations, illustrating its chemical or therapeutic focus.

The patent's background emphasizes unmet medical needs or limitations in existing therapies, providing the inventive rationale for its development. This context influences how the claims define the scope of protection, centering on novel structures, combinations, or methods not previously disclosed.


Scope of the Patent

The scope of U.S. Patent 7,652,069 hinges upon its claims, which delineate the boundaries of the patent rights. It generally covers:

  • Chemical compounds: Specific drug molecules with defined structures, including stereochemistry, substituents, or derivatives.
  • Methods of synthesis: Novel processes to produce the claimed compounds.
  • Pharmacological uses: Therapeutic indications, such as treatment of particular diseases or conditions.
  • Formulations and compositions: Specific combinations with excipients or delivery systems enhancing stability or bioavailability.
  • Methods of administration: Specific dosing protocols or routes of delivery.

The scope is ultimately distilled from the claims, which are crafted to be as broad as novelty permits, balancing the need for comprehensive protection against the risk of overreach that could render claims invalid or non-enabling.


Claims Analysis

1. Independent Claims

These form the core scope of the patent, typically encompassing:

  • Compound claims: Covering the chemical structure of the active pharmaceutical ingredient (API), often defined by a combination of structural formulae and specific substituents.
  • Use claims: Covering specific therapeutic methods, such as administering the compound to treat particular diseases.
  • Composition claims: Encompassing formulations comprising the compound and auxiliary agents.
  • Method claims: Covering synthesis or production processes.

For instance, an independent claim might read: "A compound of chemical formula X, characterized by [specific structural features], for use in treating [disease]." Such claims set the broadest patent boundary.

2. Dependent Claims

These specify particular embodiments, such as:

  • Specific stereoisomers.
  • Particular substituents that enhance activity or stability.
  • Specific formulation types (e.g., tablets, injections).
  • Diagnostic or biomarkers associated with the therapeutic method.

Dependent claims narrow the scope but add layers of protection for specific embodiments, often used to defend against design-arounds.

3. Claim Interpretation

The claims are interpreted in light of the specification to prevent undue breadth or narrowness. Notably, the scope must be supported by the description to satisfy written description requirements, reinforcing the importance of detailed patent drafting.


Patent Landscape and Competitive Environment

1. Prior Art and Patent Family

  • The state of prior art influences claim scope; earlier patents or publications on similar compounds or methods necessitate precise claim language to maintain novelty.
  • The patent is part of a broader patent family, including counterparts in other jurisdictions (e.g., EP, WO filings), which expand geographical coverage.

2. Related Patents and Innovation Clusters

  • Other patents in the landscape focus on structurally related compounds, different therapeutic uses, or alternative formulations.
  • Patent landscaping reveals a cluster of innovations around similar chemical classes, such as kinase inhibitors, HCV antivirals, or other novel therapies, indicating a competitive field.

3. Challengers and Litigation

  • Patent holders may face challenges based on art cited during prosecution or subsequent invalidation actions.
  • Enforcement may involve patent litigation, especially if the patent overlays a lucrative market segment (e.g., blockbuster drugs).

4. Current Status and Extension

  • The patent's term, roughly 20 years from filing, may be extended via patent term adjustments or supplementary protection certificates (SPCs), contingent on regulatory review periods.

Legal and Strategic Implications

  • Scope and exclusivity: Broad claims provide formidable barriers but risk invalidation if challenged on novelty or inventive step.
  • Lifecycle management: Continuously filing relevant divisional, continuation, or divisional applications can extend coverage.
  • Freedom to operate: Assessing the patent landscape around similar compounds or methods informs risk mitigation before commercialization.
  • Potential overlaps: Drug developers must monitor overlapping patents to avoid infringing claims and strategize around license or design-around opportunities.

Conclusion: Significance of U.S. Patent 7,652,069

U.S. Patent 7,652,069 secures exclusive rights over a novel therapeutic compound or method, with carefully crafted claims balancing breadth and durability against invalidity risks. Its positioning within the competitive landscape underscores the importance of continuous patent strategy evolution, ensuring sustained market protection amid ongoing innovation and litigation challenges.


Key Takeaways

  • Claims formulation is pivotal: Broad independent claims coupled with strategically drafted dependent claims maximize protection.
  • Patent landscape awareness is essential: Continuous monitoring of related patents informs proactive licensing, infringement avoidance, and innovation pathways.
  • Legal robustness enhances value: Regular portfolio reviews and adjustments safeguard patent strength over its lifecycle.
  • Therapeutic claims impact market exclusivity: Use claims specific to therapeutic indications can extend dominance but may be narrower due to prior art.
  • Global patent considerations matter: Filing equivalents and maintaining compliance across jurisdictions expand global protection and market control.

FAQs

  1. What is the primary innovation protected by U.S. Patent 7,652,069?
    It pertains to a specific chemical compound or pharmaceutical method offering therapeutic advantages, protected by claims defining its structural, compositional, or use-specific features.

  2. How does claim breadth influence patent enforceability?
    Broader claims can provide wider protection but are more vulnerable to invalidation if challenged for lack of novelty or inventive step; narrow claims are easier to defend but limit scope.

  3. What are common vulnerabilities of pharmaceutical patents like this?
    Prior art disclosures, obvious modifications, or lack of novelty can threaten validity. Additionally, patent term limitations and generic challenges affect enforceability.

  4. How does this patent fit within the broader pharmaceutical patent landscape?
    It is part of a patent family and innovation cluster, competing with similar compounds or methods, emphasizing the importance of continuous R&D and patent portfolio management.

  5. What strategic actions should patent holders consider?
    Regularly review and update claims, monitor competitors' patents, enforce rights through litigation or licensing, and consider additional filings to extend protection.


References

[1] United States Patent and Trademark Office, USPTO Public PAIR database, Patent Number 7,652,069.
[2] Patent scope analysis reports and legal classifications related to pharmaceutical patents.
[3] Patent landscape studies in the therapeutic area relevant to the patent.

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Drugs Protected by US Patent 7,652,069

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 7,652,069

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 462426 ⤷  Get Started Free
Australia 2003213684 ⤷  Get Started Free
Australia 2004266169 ⤷  Get Started Free
Australia 2004283717 ⤷  Get Started Free
Australia 2008246251 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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