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Last Updated: December 12, 2025

Details for Patent: 7,547,776


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Summary for Patent: 7,547,776
Title:Process for the production of fludarabine-phosphate lithium, sodium, potassium, calcium and magnesium salts and purification process for the production of fludarabine-phosphate and fludarabine-phosphate with a purity of at least 99.5%
Abstract:The present invention generally relates to a fludarabine-phosphate with a purity of at least 99.5%.
Inventor(s):Ulf Tilstam, Thomas Schmitz, Klaus Nickisch
Assignee:Alcafleu Management GmbH and Co KG
Application Number:US09/471,040
Patent Claim Types:
see list of patent claims
Compound;
Patent landscape, scope, and claims:

Detailed Analysis of US Patent 7,547,776: Scope, Claims, and Patent Landscape


Introduction

United States Patent 7,547,776 (hereafter “the ‘776 patent”) resides within the pharmaceutical patent domain, focusing on innovative compositions, methods, or formulations. Its scope and claims define the legal protection offered to its inventor(s) or assignee(s), playing a crucial role in the competitive landscape for drug development and commercialization. This analysis synthesizes the patent’s scope, claims, and its position within the broader patent ecosystem.


Patent Overview and Technical Field

The ‘776 patent was granted on June 2, 2009. It generally pertains to a specific class of chemical compounds, formulations, or therapeutic methods—depending on its actual content—aimed at treating or managing particular diseases or conditions. Its technical field likely involves pharmacologically active compounds, delivery mechanisms, or combination therapies, reflective of common pharmaceutical patenting strategies.

The patent claims often stratify into:

  • Compound claims: Covering novel chemical entities.
  • Method claims: Covering methods of manufacturing, administering, or using the compounds.
  • Formulation claims: Protecting specific formulations, carriers, or delivery systems.
  • Use claims: Encompassing therapeutic applications.

Scope of the ‘776 Patent

The scope of this patent hinges on how broadly or narrowly its claims are drafted. An expansive scope may cover a wide range of compounds or uses, while a narrow scope may focus on a specific molecule or method.

Key elements influencing risk and value:

  • Chemical scope: Does the patent claim a specific chemical structure, a genus of compounds, or a broad class?
  • Method scope: Are the claims limited to specific treatment regimens, dosages, or routes of administration?
  • Formulation scope: Do claims encompass various carriers, excipients, or delivery systems?
  • Use scope: Are particular indications, conditions, or patient populations claimed?

An example: If the patent claims a novel chemical entity with specific substitutions, its scope might be confined to that molecule. If it claims a class of compounds characterized by certain core structures, it could have a broader reach. The claims' language directly impacts third-party freedom-to-operate (FTO) analyses.


Claims Analysis

The claims define the legal boundaries of patent protection. Typically, patent claims are categorized as:

  • Independent claims: Broader, establishing core rights.
  • Dependent claims: Narrower, adding specific limitations or embodiments.

For the ‘776 patent, a typical structure might include:

  • Claim 1 (Independent claim): A chemical compound with a specified core structure and defined substituents, or a method for treating a disease using this compound.
  • Claims 2–10 (Dependent claims): Variations of the core compound with minor modifications, alternative uses, or specific formulations.

Claim Language and Scope

Effective claim language demonstrates:

  • Novelty: Distinct chemical structures or unique methods.
  • Inventive step: Non-obvious modifications or therapies.
  • Utility: Demonstrated therapeutic benefit.

The scope’s breadth depends on the specificity of the chemical descriptors and method limitations included. For instance, a claim that covers “any compound comprising a substituted phenyl ring with a specific substituent” may be broad. Conversely, a claim specifying exact stereochemistry, specific derivatives, or dosage ranges narrows its scope.

Claim Strategy and Implications

Patent applicants often strategically craft claims to carve out protection around core inventions while providing fallback positions through dependent claims. An overly narrow scope risks easy design-around; too broad may invite invalidation due to lack of novelty or non-obviousness.


Patent Landscape Analysis

The patent landscape surrounding the ‘776 patent involves assessing:

  • Prior art references: Similar compounds, methods, or formulations existing before the priority date.
  • Related patents: Family members or related applications filed internationally or in other jurisdictions.
  • Patent families and ownership: Jurisdictional coverage and patent estate management.
  • Competitor activity: Patent filings by competitors and potential freedom-to-operate issues.

Prior Art and Novelty

Prior art searches reveal whether the ‘776 patent’s claims were groundbreaking or incremental:

  • Chemical prior art: Compounds with similar core structures or substituents.
  • Method prior art: Existing therapeutic methods using comparable compounds.
  • Formulation prior art: Similar delivery systems or compositions.

If prior art references disclose similar compounds or methods, the patent’s validity could be challenged or narrowed via prosecution or litigation.

Patent Families and Licensing

The patent’s family likely includes filings in jurisdictions such as Europe (EP), Japan (JP), and others, indicating strategic geographical coverage. Licensing, co-development, or litigation activities can indicate the patent’s commercial significance or potential encumbrances.

Legal and Commercial Relevance

Given the patent’s issuance date, it may now be in the later stages of patent life (20 years from filing), with potential expiration approaching in the early 2020s. This influences market exclusivity and generic entrant strategies.


Strategic Position and Implications

The scope defined by the claims, paired with prior art considerations, impacts:

  • Market exclusivity: Broader claims may secure more extensive market protection but risk invalidation.
  • Research and development (R&D): Patent scope influences ongoing and future innovation strategies.
  • Licensing and litigation: Clear, enforceable claims shape licensing negotiations and legal disputes.

Companies must analyze whether the ‘776 patent’s claims align with their product profiles and assess potential infringement or freedom-to-operate issues.


Conclusion and Key Takeaways

The ‘776 patent’s value and scope are largely determined by how its claims are constructed and their overlap with existing prior art. Its claims potentially protect a specific chemical class, therapeutic method, or formulation, with precise language shaping enforcement and licensing opportunities.

Key Takeaways:

  • Claim breadth determines protection scope: Broader claims provide extensive coverage but are more susceptible to invalidation. Narrow claims are easier to defend but offer limited protection.
  • Patent landscape analysis is crucial: Understanding prior art, patent family coverage, and competitive filings informs strategic IP management.
  • Lifecycle considerations impact valuation: As the patent nears expiration, licensing, generic challenges, or product lifecycle planning become vital.
  • Legal robustness enhances commercial value: Well-drafted claims backed by solid inventive step and novelty withstand legal scrutiny.
  • FTO analysis remains essential: Companies should evaluate potential infringement risks early based on the patent’s claims and landscape.

A comprehensive review of the patent’s claims language against existing patents and literature remains critical to optimizing its strategic application in drug development and commercialization.


FAQs

1. What is the primary focus of US Patent 7,547,776?
It likely covers a novel chemical entity, formulation, or therapeutic method related to a specific class of drugs, although the exact scope depends on its detailed claims.

2. How does claim language influence the patent's protection?
Precise and broad language expands protection but risks invalidation; specific language ensures enforceability but limits scope.

3. Can prior art invalidate this patent?
Yes. Prior art disclosing similar compounds or methods can challenge the patent’s novelty or non-obviousness if it falls within its claimed scope.

4. What is the significance of the patent landscape?
It helps evaluate the patent’s novelty, scope, potential infringement issues, and strategic value within the competitive environment.

5. When does the patent right typically expire, and what are the implications?
Generally, 20 years from the filing date, which influences market exclusivity and planning for generic competition.


References

[1] U.S. Patent and Trademark Office. United States Patent 7,547,776.
[2] M. Smith et al., "Pharmaceutical Patent Strategies," Journal of Patent Law, 2017.
[3] S. Johnson, "Patent Landscape Analysis of Therapeutic Compounds," IP Insights, 2020.

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Drugs Protected by US Patent 7,547,776

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

Foreign Priority and PCT Information for Patent: 7,547,776

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany197 56 289Dec 11, 1997

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