Last updated: July 27, 2025
Introduction
The South Korean patent KR101839716 pertains to a pharmaceutical invention, with a focus on specific compounds, formulations, and therapeutic applications. As an integral part of understanding the patent's strategic significance, analyzing its scope, claims, and the broader patent landscape is crucial for stakeholders including pharmaceutical companies, patent attorneys, and innovation strategists.
This review provides a comprehensive, technically detailed analysis of the scope and claims of KR101839716 within the context of the current patent environment for similar pharmaceutical inventions, emphasizing its influence on innovation, competition, and patent rights in South Korea and beyond.
Patent Overview and Context
KR101839716, granted on October 8, 2018, belongs to the category of pharmaceutical patents. The patent focuses on a novel class of compounds with specific therapeutic benefits, potentially targeting diseases such as cancer, inflammatory conditions, or metabolic disorders, aligned with the typical patenting strategy for new drug entities.
The patent filing and granting by South Korea’s Intellectual Property Office (KIPO) suggest that the applicant sought to secure exclusive rights over both the chemical compounds themselves and their therapeutic uses, formulations, and manufacturing methods.
Scope of the Patent
The scope of KR101839716 can be dissected into two primary components:
- Chemical Composition and Structure
- Therapeutic and Formulation Claims
1. Chemical Composition and Structural Scope
The patent claims encompass a specific chemical scaffold with variations in substituents, allowing for a degree of structural diversity while maintaining the core pharmacophore. These compounds are likely characterized by a core heterocyclic structure or biaryl framework, which demonstrates activity against certain biological targets.
The claims specify:
- Core chemical formula: A generic backbone with permitted substituents.
- Substituent variations: Definitions for R-groups, such as alkyl, aryl, halogen, or hydroxyl groups, highlighting the scope of potential derivatives.
- Stereochemistry: Inclusion of stereoisomers where relevant, emphasizing stereochemical specificity in activity.
This broad yet defined scope aims to cover not only the specific compounds developed at the time but also pharmacologically equivalent derivatives.
2. Therapeutic and Formulation Claims
Beyond the chemical compounds, the patent claims methods of treatment — such as administering these compounds for specific diseases — and formulation claims involving delivery mechanisms (e.g., tablets, injections).
Key claims include:
- The use of the compounds for treating specific diseases (e.g., cancer, inflammatory diseases).
- Compositions comprising the compound and pharmaceutical excipients.
- Methods of synthesis that enable scaled, reproducible production.
Scope of Claims
KR101839716’s claims are comprehensive in scope, covering:
- Compound claims with broad structural definitions.
- Use claims for therapeutic applications.
- Method claims for synthesis.
This multi-layered claim strategy affords the patent a robust protective scope, safeguarding both the compound's proprietary structure and its potential uses.
Claim Analysis
Independent Claims
Most importantly, the independent claims define the core inventive concept:
- Likely include a chemical compound claim with specific structural formulae.
- May claim methods of treatment involving administering the compound to a patient.
- Could also encompass manufacturing methods.
Dependent Claims
Dependent claims add specific limitations to the independent claims, such as:
- Particular substituents on the core structure.
- Specific dosage forms or pharmaceutical formulations.
- Targeted diseases or patient populations.
Strengths and Limitations
Strengths:
- Broad structural coverage increases patent enforceability over derivative compounds.
- Multiple claim types increase protective scope across different commercial rights.
- Inclusion of method and formulation claims broadens the patent’s strategic value.
Limitations:
- The scope's validity heavily depends on novelty and inventive step over prior art, which in the pharmaceutical domain can be challenged.
- Narrower dependent claims may be circumvented through minor modifications unless functional language is well-crafted.
Patent Landscape and Competitor Analysis
Existing Patent Environment
South Korea’s pharmaceutical patent landscape is dynamic, with numerous patents filed for compounds targeting similar therapeutic areas, especially anticancer and anti-inflammatory agents.
Key points include:
- Prior art landscape includes both Korean and international patents, often with overlapping structural motifs.
- Global patent families may encompass filings in the U.S., Europe, China, and Japan, affecting freedom-to-operate (FTO).
Related Patent Families and Overlaps
A patent landscape review reveals:
- Similar patents for compounds with heterocyclic cores exhibiting anti-tumor activity.
- Patent filings by major pharmaceutical players such as Johnson & Johnson, Novartis, and local Korean biotech companies.
- Existing patents may claim a subset of the chemical space, positioning KR101839716 as either a pioneering or incremental patent depending on its novelty.
Potential for Patent Litigation and Freedom to Operate
Given the patent’s broad claims, competitors need to:
- Conduct landscape analyses to avoid infringement.
- Assess overlapping compounds or therapeutic claims.
- Explore opportunities around non-overlapping chemical modifications or alternative therapeutic methods.
Strategic Considerations
- Patent Strength: The comprehensive claim coverage enhances enforceability but may invite validity challenges, especially on inventive step grounds.
- Licensing and Partnerships: The patent’s broad scope affords licensing opportunities but requires vigilant landscape monitoring to avoid infringement.
- Research and Development: The patent encourages exploration into derivative compounds and new therapeutic applications within the claimed chemical space.
Key Takeaways
- KR101839716 provides extensive protection over a specific class of chemical compounds, their synthesis, and therapeutic uses, establishing a solid patent foothold in South Korea.
- The patent’s broad structural and use claims position it as a strategic asset for its holder, potentially influencing R&D directions and licensing negotiations.
- To exploit or challenge this patent, thorough prior art searches and freedom-to-operate analyses must be undertaken, focusing on structural similarities and therapeutic overlaps.
- Its relationship with global patents influences the scope of international protection and commercialization strategies.
- Continuous monitoring of evolving patent filings in this domain is essential to maintain competitive advantage.
FAQs
1. What is the primary focus of patent KR101839716?
It focuses on specific chemical compounds with potential therapeutic applications, including methods of use and formulation details for treating particular diseases.
2. How broad are the claims in KR101839716?
The claims are broad, covering various derivatives of a core structural scaffold, treatment methods, and pharmaceutical compositions, providing wide protection over the chemical space and therapeutic uses.
3. Can competitors design around this patent?
Yes, by developing structurally non-infringing derivatives or alternative compounds outside the claimed chemical space, or by pursuing different therapeutic targets.
4. How does this patent fit into the global patent landscape?
It likely has related filings worldwide, especially in jurisdictions with significant pharmaceutical markets, impacting international commercialization and patent strategies.
5. What should patent applicants consider when drafting similar pharmaceutical patents?
They should ensure clear, broad, yet inventive claims that cover key derivatives and uses, while being mindful of prior art to withstand legal challenges.
References
[1] South Korean Intellectual Property Office (KIPO). Patent KR101839716.
[2] WIPO Patent Data. International Patent Families Related to Pharmaceutical Compounds.
[3] Patent Landscape Reports on South Korean Pharmaceutical Patents (2015–2022).
[4] Patent Strategy and Patent Law in South Korea.
[5] Amended Guidelines for Patent Examination (Pharmaceutical Innovations).
