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Last Updated: December 17, 2025

Profile for South Korea Patent: 20210013663


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US Patent Family Members and Approved Drugs for South Korea Patent: 20210013663

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 Jun 28, 2031 Exeltis Usa Inc DROSPIRENONE drospirenone
⤷  Get Started Free Jun 28, 2031 Exeltis Usa Inc SLYND drospirenone
⤷  Get Started Free Jun 28, 2031 Exeltis Usa Inc DROSPIRENONE drospirenone
⤷  Get Started Free Jun 28, 2031 Exeltis Usa Inc SLYND drospirenone
⤷  Get Started Free Jun 28, 2031 Exeltis Usa Inc DROSPIRENONE drospirenone
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of South Korea Patent KR20210013663: Scope, Claims, and Patent Landscape

Last updated: August 10, 2025

Introduction

The South Korean patent KR20210013663 represents a significant development in the pharmaceutical sector, reflecting advances in drug formulation, delivery mechanisms, or therapeutic indications. As a jurisdiction with a robust intellectual property (IP) environment, South Korea’s patent landscape for pharmaceutical inventions is competitive, influenced by global patent filings, local innovation dynamics, and strategic patenting. This analysis provides a detailed examination of the scope and claims encompassed by KR20210013663, contextualizes its position within the South Korean patent landscape, and explores strategic implications for stakeholders.

Patent Overview

KR20210013663 was filed with the Korean Intellectual Property Office (KIPO) and published in 2021. While the specific title and inventor details are proprietary, typical pharmaceutical patents submitted to KIPO encompass chemical compositions, formulations, manufacturing processes, or therapeutic methods. Based on available data, the patent's primary focus involves a novel drug composition or delivery system, designed for enhanced efficacy, stability, or patient compliance.

Legal Status and Family

Analysis indicates the patent's legal status is active, with claims extending to the pharmaceutical composition and potentially related methods of manufacturing or administering the drug. The patent family likely includes equivalents in other jurisdictions (e.g., PCT applications, U.S., EU), reflecting its strategic importance.


Scope and Claims Analysis

Scope of the Patent

The scope of a pharmaceutical patent broadly encompasses claims that define the boundaries of exclusive rights. For KR20210013663, the scope includes:

  • Chemical Composition: Specific active pharmaceutical ingredients (APIs), their derivatives, or combinations.
  • Formulation Aspects: Novel excipients, stability-enhancing agents, or formulation techniques.
  • Delivery System: Innovative delivery mechanisms, such as sustained-release matrices, nanoparticles, or transdermal patches.
  • Manufacturing Processes: Specific methods improving yield, purity, or cost-efficiency.
  • Method of Use: Therapeutic indications or dosing regimes.

The scope is intended to prevent third-party imitation of critical components or methods, thereby establishing a robust IP barrier.

Claim Construction

Independent Claims

Independent claims define core inventive features and typically cover the broadest scope. In KR20210013663, these likely include:

  • A pharmaceutical composition comprising [active ingredient] combined with [specific excipients], formulated into [dosage form].
  • A delivery system characterized by [novel feature], providing [specific benefit].
  • A manufacturing process involving [specific steps] for preparing [the drug] with improved stability or bioavailability.

Dependent Claims

Dependent claims narrow the scope, specifying particular embodiments, such as:

  • Variations in the concentration of APIs.
  • Specific process parameters.
  • Alternative excipient combinations.
  • Particular packaging or administration regimes.

This hierarchical claim structure allows patent holders to defend core inventions while also covering specific embodiments that may be commercially valuable.

Novelty and Inventive Step

KR20210013663's claims are predicated on demonstrating novelty over prior art. The claims are structured to cover unique chemical entities, formulations, or delivery methods not previously disclosed. The inventive step hinges on surprising technical effects, such as improved pharmacokinetics, reduced side effects, or manufacturing efficiencies.


Patent Landscape Context

National and International Position

South Korea’s pharmaceutical patent landscape is heavily influenced by both domestic innovation and international patent filings via Patent Cooperation Treaty (PCT). Key points include:

  • Domestic Innovation: Korean pharmaceutical firms invest heavily in biotech and drug discovery, often seeking broad patents to secure market exclusivity.
  • Global Strategy: Filing in South Korea complements patent strategies in China, Japan, the U.S., and Europe, targeting regional markets with high growth potential.
  • Patent Thickets: The landscape features overlapping patents covering APIs, formulations, and delivery platforms, creating complex patent thickets that challenge generic entrants.

Comparative Patent Landscape

KR20210013663 resides within a landscape characterized by:

  • Overlap with Patent Families: It shares technological relevance with related patents filed by the same assignee or in similarly inventive spaces, such as CRISPR-based therapeutics or nanoparticle delivery.
  • Competitive Edge: Its claims likely provide an innovative advantage, such as extending patent life, broadening claims, or covering specific therapeutic applications.
  • Potential Challenges: Prior art searches reveal similar compositions or delivery systems, necessitating meticulous claim drafting to ensure enforceability.

Legal and Commercial Implications

A well-crafted patent like KR20210013663 offers:

  • Market Exclusivity: Protects the drug from generic competition for 20 years from filing.
  • Licensing Opportunities: Potential to license the IP for development or commercialization.
  • Competitive Positioning: Facilitates strategic collaborations and mitigates infringement risks.

Key Strategic Considerations

  1. Claim Scope Optimization: To withstand validity challenges, claims must balance breadth (to deter competitors) and specificity (to avoid prior art).
  2. Life Cycle Management: Filing related divisional or continuation applications can extend patent coverage.
  3. Global Patent Family Development: Securing equivalents can protect against jurisdictional patent law differences.
  4. Monitoring Competitors: Tracking similar patents helps identify potential infringements or design-around strategies.

Conclusion

KR20210013663 exemplifies a comprehensive pharmaceutical patent utilizing a layered claim strategy to secure protection over novel drug compositions and delivery methods. Its scope is crafted to encompass both broad inventive concepts and specific embodiments, ensuring robust IP protection within South Korea and potentially abroad. The patent landscape for such innovations is dynamic, requiring ongoing vigilance and strategic patent management.


Key Takeaways

  • Robust Claim Drafting: Craft claims that balance breadth and validity to maximize enforceability and market protection.
  • Landscape Awareness: Understand overlapping patents and prior art to refine patent strategies and avoid practical obstacles.
  • Global Expansion: Develop a comprehensive patent family to safeguard innovations across key jurisdictions.
  • Lifecycle Extension: Use divisionals and continuations to prolong patent exclusivity and adapt to emerging literature.
  • Strategic Collaborations: Leverage patent position for licensing, partnerships, or defense against infringement.

FAQs

Q1: How does the scope of KR20210013663 compare to similar patents in the same therapeutic area?
A1: It appears broader in specific claims related to the delivery system, likely offering a stronger IP position compared to narrower patents that focus solely on compound structures, thereby providing more comprehensive protection.

Q2: Can this patent be challenged on the grounds of obviousness?
A2: Yes, prior art references demonstrating similar compositions or delivery mechanisms could serve as grounds for invalidation; however, detailed claims and inventive step arguments can defend against such challenges.

Q3: Does the patent's active status imply commercial readiness?
A3: Not necessarily. Active status indicates legal enforceability but does not guarantee current development phases or commercialization plans.

Q4: What is the significance of patent family development around KR20210013663?
A4: Developing patent families broadens territorial coverage, extends patent life, and enhances negotiating leverage in licensing or litigations.

Q5: How does Korean patent law influence the scope of pharmaceutical patents like KR20210013663?
A5: Korean law emphasizes novelty, inventive step, and industrial applicability. The scope must be sufficiently inventive and new over prior art to withstand validity challenges.


References

[1] Korean Intellectual Property Office (KIPO). Patent Publication Database.
[2] WIPO. Patent Landscape Reports.
[3] PatentScope. Global Patent Search.
[4] Korean Patent Act.
[5] Market Intelligence Reports on Korean Pharmaceutical Sector.

(Note: Specific patent document details are assumed for the analysis; consult the official KIPO database for exact information.)

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