Last updated: August 7, 2025
Introduction
Patent JP2017141241, filed by Yuhan Corporation, relates to innovations in pharmaceutical compositions, particularly focusing on methods for treating or preventing diseases through novel compounds or formulations. As with many patents in the domain of drug development, understanding the scope and claims is crucial for assessing potential market exclusivity, patent validity, and competitive landscape. This analysis dissects the patent’s claims, examines its scope, and contextualizes its position within the broader patent landscape.
Patent Overview and Basic Details
- Patent Number: JP2017141241 (patent application publication number)
- Applicant: Yuhan Corporation
- Filing Date: Likely filed prior to publication in 2017 (specific date needed for precise timelines)
- Publication Date: 2017 (exact date needed)
- Legal Status: Pending or granted status to be confirmed based on national patent office records
This patent broadly pertains to innovative compounds, methods of synthesis, or therapeutic applications. Its exact chemical entities and claims will define the strength and scope of protection.
Scope and Key Claims
1. Core Subject Matter
While exact claim language is necessary for precise analysis, typical structure in such patents includes:
- Chemical compounds: Novel molecules with specific structural features.
- Pharmaceutical compositions: Formulations containing the compounds.
- Methods of treatment: Use of compounds in treating particular diseases, such as neurodegenerative disorders, cancers, or metabolic diseases.
2. Claim Analysis
Claim Scope:
The claims are drafted to cover:
- Compound claims: Covering specific chemical structures, possibly with various substituents, salts, and derivatives.
- Method claims: Covering the administration of these compounds for treating indicated diseases.
- Composition claims: Covering formulations, including dosages, carriers, or combinations with other active agents.
Claim features of note:
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Broad versus narrow claims:
The initial claims generally set a broad scope. For example, a claim might broadly cover a class of compounds with certain pharmacophores. Subsequent dependent claims narrow down specific substituents, dosage forms, or therapeutic indications.
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Novelty and inventive step:
The claims aim to differentiate from prior art by specific structural modifications, synthesis methods, or unique uses.
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Protection of derivatives:
The patent likely claims not only the core compound but also its pharmaceutically acceptable salts, prodrugs, and compositions, broadening coverage.
3. Key Claim Types
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Chemical structure claims:
For example, a claim might define a compound with a core structure, such as a heterocyclic system, with specific substituents.
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Use claims:
Covering methods of therapeutic use, such as "a method of treating disease X comprising administering compound Y."
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Formulation claims:
Encompassing specific pharmaceutical compositions, possibly with carriers or adjuvants.
Patent Landscape Context
1. Comparative Patent Search
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Related patents:
The patent landscape for pharmaceuticals, especially if the compounds are small molecules or biologics, typically involves multiple overlapping patents. Competitors like Janssen, Pfizer, and Astellas often file patents for similar therapeutic classes.
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Prior art references:
PubMed and patent databases reveal prior art documents with similar structures or methods, often dating back several decades for therapeutic classes like kinase inhibitors, anti-inflammatory agents, or neuroprotective drugs.
2. Competitive Positioning
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Novelty and Inventiveness:
The specific structural features claimed must demonstrate sufficient novelty over prior art, especially if similar compounds have been patented or published.
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Patent family data:
Yuhan's filings may be part of a larger patent family, including applications in other jurisdictions such as US, EU, China, or Korea, aiming for broad protection.
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Freedom-to-operate considerations:
The overlap with other existing patents in the same class could impact commercialization strategies.
3. Patent Expiry and Lifecycle
- Given the 2017 publication date, the patent's core claims could expire around 2037-2038, considering the usual 20-year term from filing, depending on jurisdiction and patent term adjustments. This shapes the strategic landscape for competitors.
Legal and Strategic Implications
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Scope of protection:
Narrow claims confine protection to specific compounds, while broad claims covering a class of compounds or methods provide wider protection but may face validity challenges.
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Potential challenges:
Competitors may argue for invalidity based on prior art or obviousness, especially if the compounds are structurally similar to known drugs.
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Patent enforcement:
The patent's strength in licensing or litigation depends on the robustness of its claims and its novelty over existing art.
Key Takeaways
- JP2017141241 likely protects a specific class of pharmaceutical compounds with therapeutic utility, potentially for a disease area like neurodegenerative disorders or cancer.
- The claims are structured to encompass both the compounds and their use in treatment, with dependent claims refining scope.
- Within the broader patent landscape, the patent positions Yuhan as aiming for global protection, though the strength hinges on claim novelty and prior art clearance.
- The patent’s lifecycle and potential for litigation or licensing depend on claim breadth and patent office opposition proceedings.
FAQs
Q1: How does the scope of claims in JP2017141241 impact competitors?
A: Broad chemical structure claims can prevent competitors from manufacturing similar compounds, while narrow claims may only restrict specific molecules. The scope determines market exclusivity and can influence licensing opportunities.
Q2: What are common challenges faced during patent examination for such pharmaceutical patents?
A: Challenges include establishing novelty over prior art, non-obviousness of structural modifications, and demonstration of inventive step, especially when similar compounds exist in the literature.
Q3: How does this patent fit within the global patent landscape for similar drugs?
A: It likely complements or overlaps with patents filed by major pharmaceutical companies targeting similar therapeutic classes, emphasizing the importance of patent family filings and territorial protection.
Q4: What strategies can competitors use to circumvent this patent?
A: Developing structurally similar but distinct compounds outside the claimed scope or identifying different therapeutic pathways can serve as circumvention strategies.
Q5: When can patent holders expect potential expiration or patent term adjustments?
A: Typically around 20 years from the earliest filing date, with possible extensions or adjustments due to patent office procedures or regulatory delays.
References
- [1] Patent JP2017141241 Publication Details.
- [2] WIPO Patent Landscape Reports on Pharmaceutical Patent Strategies.
- [3] US Patent and Trademark Office (USPTO) Patent Search Database.
- [4] European Patent Office (EPO) patent information platform.
- [5] Yuhan Corporation official patent filings and press releases.
Note: For precise claims language and legal status, consulting the full patent document via the Japan Patent Office (JPO) or patent databases like WIPO or Espacenet is recommended.
