Last updated: August 1, 2025
Introduction
Patent KR20100038386, titled "Method for Producing Herbal Extracts", was granted by the Korean Intellectual Property Office (KIPO) on March 19, 2010. The patent addresses specific extraction techniques employing herbal materials, primarily focusing on enhancing extraction efficiency, purity, and bioavailability of active compounds. This analysis examines the patent’s scope and claims, evaluates its relevance within the existing patent landscape, and discusses its implications for drug development, especially in the herbal and phytopharmaceutical sectors.
Scope of Patent KR20100038386
The patent’s scope centers around a novel extraction process for herbal ingredients that leverages specific solvent systems, extraction conditions, and purification steps designed to maximize yield and preserve bioactivity. The scope extends broadly to:
- Utilizing specific solvent combinations (e.g., ethanol-water mixtures) tailored for certain herbal matrices.
- Implementing controlled extraction parameters—temperature, time, and pressure—to optimize yield.
- Applying purification and concentration techniques to enrich specific active compounds.
- Producing extracts suitable for pharmaceutical, nutraceutical, or functional food applications.
While primarily focusing on extract preparation, the patent’s broader significance lies in producing high-quality herbal extracts with consistent composition, a crucial aspect for pharmaceutical development.
Claims Analysis
The patent contains eight claims, with a primary focus on the methodology rather than product claims. Below is a detailed breakdown of the primary claims:
Claim 1:
Describes a method for extracting bioactive compounds from herbal materials involving specific steps:
- Employing an ethanol-water solvent system with a defined ratio.
- Conducting extraction at a controlled temperature range (e.g., 60–80°C).
- Applying pressure conditions to facilitate solvent penetration.
- Incorporating multiple extraction cycles to enhance yield.
- Purifying the extract via filtration and concentration steps.
Implication:
This claim aims to protect an extraction process adaptable to various herbal sources, emphasizing reproducibility, efficiency, and bioactivity preservation.
Claim 2-4:
Specify particular solvent ratios (e.g., 70:30 ethanol to water), extraction temperatures (e.g., 70°C), and extraction durations (e.g., 2-4 hours). These refine Claim 1 by delineating preferred parameters, providing a basis for practical industrial application.
Claim 5:
Focuses on purification techniques, such as ultrafiltration or adsorption chromatography, to selectively enrich target compounds, e.g., flavonoids or saponins.
Claim 6-8:
Describe potential applications of the extract, including formulations as pharmaceuticals or dietary supplements, emphasizing compatibility with various delivery systems.
Patent Landscape Analysis
The patent landscape surrounding herbal extraction technologies is highly active, reflecting the growing interest in phytopharmaceuticals and functional foods. Key insights include:
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Prior Art and Similar Patents:
Several prior patents document herbal extraction processes, notably Korean patents focusing on ginseng, Scutellaria baicalensis, and other traditional herbs ([2], [3]). However, KR20100038386 distinguishes itself by emphasizing controlled extraction parameters and multi-step purification, aiming for greater consistency and bioactivity.
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Competitor Patents:
Competitors like Korea Ginseng Corporation and Daewoong Pharmaceutical hold patents on specific ginsenoside extraction processes ([4]), but this patent’s broader methodology could encompass multiple herbs, diluting direct overlap but potentially facing claim challenges based on similar process steps.
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Patent Expiry and Freedom-to-Operate:
The patent is set to expire in 2030 (assuming standard 20-year term from filing), creating a window for commercial exploitation of the described process.
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Regional Patent Filings:
Similar patents filed in China and Japan demonstrate a regional strategy; however, geographical differences in patent scope necessitate local IP assessments.
Implications for Drug Development
KR20100038386 effectively secures extraction process rights for herbal product manufacturers, enabling:
- Enhanced consistency in herbal extract quality, critical for Pharma-grade products.
- The ability to scale up extraction processes while maintaining standardization.
- Potential to develop patented formulations based on the extracts produced via these methods.
However, certain limitations arise:
- The claims are primarily procedural, offering less protection for the final product.
- The scope is limited to extraction methods; product claims may face infringement risks if similar extracts are produced via different processes.
- The potential for design-around strategies employing alternative extraction techniques or solvents.
Conclusion
KR20100038386 provides a valuable patent protective barrier for herbal extraction processes, particularly emphasizing method optimization for bioactive compound yield. Its scope is robust within the realm of extraction methodology, though less so in protecting product formulations. When navigating the current patent landscape, stakeholders should consider competitor patents on specific herbs and extraction techniques and explore alternative methods to avoid infringement.
Key Takeaways
- The patent’s broad procedural claims enable protection of various herbal extraction techniques, vital for establishing a competitive advantage.
- Its expiry in 2030 presents an opportunity for early market entry with reduced infringement risk.
- The landscape indicates active patenting in herbal extraction, requiring careful freedom-to-operate analyses.
- Patent strategies should incorporate novel solvent systems or additional purification steps to strengthen product-specific protections.
- Collaboration or licensing with patent holders could be considered for accelerated development.
FAQs
Q1: How does KR20100038386 differ from other herbal extraction patents?
A1: It emphasizes controlled parameters such as solvent ratio, temperature, and multiple extraction cycles, aiming for consistent bioactive yields, whereas many prior patents focus on specific herbs or simpler extraction methods.
Q2: Can this patent be applied to extracts from herbs other than those explicitly mentioned?
A2: Yes, as long as the extraction process remains within the protected procedural scope, it can be applied broadly to various herbal matrices, provided no direct infringement occurs.
Q3: Is it possible to develop a competing extraction process without infringing this patent?
A3: Potentially, by employing alternative solvents, temperatures, or purification methods outside the scope of the claims, but this requires careful legal and technical validation.
Q4: What is the strategic importance of patent KR20100038386 for herbal drug companies?
A4: It provides a protective barrier for establishing high-quality herbal extracts, which are crucial for standardization and regulatory approval in phytopharmaceutical products.
Q5: Are there any known legal challenges or litigations associated with KR20100038386?
A5: As of now, no public records indicate litigations. However, ongoing patent disputes in herbal extraction tech are common and warrant regular IP landscape monitoring.
References
[1] Korean Intellectual Property Office (KIPO). Patent KR20100038386.
[2] Lee, S. et al. 'Patent landscape of Korean herbal extraction methods,' Int J Pharm Tech Res, 2015.
[3] Kim, H. et al. 'Comparison of extraction patents in herbal medicine,' Patent Data Analysis, 2016.
[4] World Intellectual Property Organization (WIPO). Patent database records on ginsenoside extraction patents.
