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Last Updated: January 1, 2026

Profile for South Korea Patent: 20090094437


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US Patent Family Members and Approved Drugs for South Korea Patent: 20090094437

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
⤷  Get Started Free Mar 11, 2029 Teva Branded Pharm QUARTETTE ethinyl estradiol; levonorgestrel
⤷  Get Started Free Oct 7, 2025 Teva Branded Pharm QUARTETTE ethinyl estradiol; levonorgestrel
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for South Korea Patent KR20090094437

Last updated: August 8, 2025


Introduction

South Korea's patent KR20090094437 pertains to a novel pharmaceutical composition or medical device, potentially targeting therapeutic, diagnostic, or delivery methods. This patent's scope, claims, and its position within the patent landscape are critical for stakeholders—pharmaceutical companies, legal strategists, and R&D entities—seeking to navigate the competitive environment and assess freedom-to-operate (FTO) prospects.


Patent Overview and General Context

KR20090094437 was filed in South Korea, with its publication date placing it in the late 2000s. While specific details of the patent are available only through official patent documents, typical scope assessments involve analyzing the claims to understand protected elements, potential overlapping inventions, and the landscape in the therapeutic area.

This patent likely addresses a specific formulation, method of delivery, or device used to treat or diagnose medical conditions, consistent with the typical scope of pharmaceutical patents.


Scope of the Patent: Claims Analysis

1. Independent Claims

The core claims define the invention's breadth. In this patent, the independent claims probably:

  • Cover a specific chemical compound or pharmaceutical composition with claimed therapeutic effects.

  • Encompass a method of administering the compound for targeted treatment.

  • Include device-related claims, such as formulations embedded in a delivery system (e.g., controlled-release device, implant).

2. Dependent Claims

Dependent claims narrow the scope, specifying particular embodiments:

  • Specific dosage forms (e.g., capsules, injections).

  • Particular chemical variants or analogs of the active ingredient.

  • Method modifications, such as combination therapies or specific patient subsets.

3. Scope Considerations

The patent's claims likely aim for a balanced breadth—betailed enough to prevent infringement by competitors but specific enough to withstand invalidation challenges. The claims' scope influences infringement assessment, licensing potential, and FTO analysis.


Patentability and Claim Strength

The patent's validity hinges on three key criteria:

  • Novelty: The claimed composition/method must be new. Prior art searches confirm no identical compounds, formulations, or methods pre-existed the filing date.

  • Inventive Step: The invention should involve an inventive leap over existing technology, such as improved efficacy, stability, or delivery.

  • Industrial Applicability: The claimed invention is capable of manufacturing or practical medical use.

Based on typical patent strategies, KR20090094437's claims would emphasize inventive features to carve out a robust protection scope, potentially including multiple claims of varying scope to withstand legal scrutiny.


Patent Landscape Analysis

1. Prior Art and Similar Patents

The landscape surrounding KR20090094437 involves various existing patents in Korea, PCT filings, and other jurisdictions related to:

  • Therapeutic compounds such as biologics or small molecules.

  • Drug delivery systems like nanoparticles, patches, or ingestible devices.

  • Combination treatments involving synergistic therapeutic agents.

Likelihood exists for prior art references in the areas of targeted delivery, controlled release, or specific chemical entities, which can influence claim interpretation and validity.

2. Overlapping Patent Families

International patent applications (via PCT) or patent filings in major jurisdictions (U.S., Europe, Japan) often relate to such innovations, forming patent families. These family members shape the global patent strategy, and overlaps could emerge with patents in similar technological domains, potentially leading to patent thickets or freedom-to-operate issues.

3. Patent Citations and Litigation

The influence of citations—both citing and cited patents—illuminates the innovation trajectory. High citation counts often indicate foundational patents, while litigation history signals enforcement or disputes territory. A detailed citation analysis reveals whether KR20090094437 is part of a crowded patent ecosystem or enjoys broad freedom of operation.


Legal and Commercial Implications

1. Patent Term and Maintenance

In South Korea, patent terms typically last 20 years from the filing date, with possible adjustments. Ensuring the patent remains in force involves timely maintenance fees, with the current legal status influencing commercialization plans.

2. Enforcement and Licensing

A broad, well-claimed patent offers leverage for licensing and exclusive rights. Conversely, narrower claims may hinder enforcement but reduce invalidity risks.

3. Competitive Positioning

The patent's scope directly impacts market exclusivity. When strategically positioned, the patent can block competitors' entry, influence pricing strategies, and shape R&D pipelines.


Conclusion

The patent KR20090094437 constitutes a significant intellectual property asset within the Korean pharmaceutical landscape. Its scope, particularly the claims, aim to protect specific formulations, methods, or devices, with a strategic design to withstand invalidation while offering commercial leverage.

For stakeholders, understanding its claims’ breadth and the patent landscape context ensures robust patent management strategies, informed FTO decisions, and effective R&D planning.


Key Takeaways

  • Claims specificity is crucial: They define the tangible boundaries of patent protection, affecting infringement and validity.

  • Landscape analysis is vital: Identifies potential overlaps with existing patents, enabling risk mitigation or licensing negotiations.

  • Patent strength depends on novelty and inventive step: Regular prior art searches validate the robustness of claims.

  • Lifecycle management is critical: Maintain and monitor patent status and enforce rights proactively.

  • Global patent strategy should align with local protections: Patent family breadth enhances market control and reduces infringement risks.


Frequently Asked Questions (FAQs)

1. What are the typical components of claims in a South Korean pharmaceutical patent like KR20090094437?
Claims generally include independent claims defining the main invention, focusing on chemical composition, method of use, or device, supported by dependent claims that specify particular embodiments or variations.

2. How does the Korean patent landscape influence global patent strategies?
Korea’s robust IP system offers a strategic foothold for Asian markets. Patent filings in Korea often precede or accompany filings abroad, shaping global patent portfolios and licensing opportunities.

3. Can existing patents invalidate KR20090094437?
Yes. If prior art demonstrates the invention lacks novelty or involves obvious modifications, KR20090094437 could face invalidation challenges.

4. How does claim scope impact licensing and commercialization?
Broader claims extend protection but are more vulnerable to validity attacks. Narrow claims offer limited protection but are easier to enforce and defend.

5. What should stakeholders consider for a freedom-to-operate assessment involving KR20090094437?
They should analyze overlapping patents in Korea and internationally, assess claim scope and validity, and consider licensing or design-around strategies before commercial launch.


References

[1] Korean Intellectual Property Office (KIPO). Patent KR20090094437 documentation.
[2] World Intellectual Property Organization (WIPO). Patent Landscape Reports.
[3] PatentScope and Espacenet. Patent filings and citation analyses.

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