Last updated: February 19, 2026
This report details the scope and claims of Chinese patent CN105056211, a patent related to a pharmaceutical composition and its use. It analyzes the patent's coverage, identifies key claims, and provides an overview of the relevant patent landscape.
What is the core invention claimed by CN105056211?
Chinese patent CN105056211, titled "A Preparation Method and Application of Compound Compound of Lycium Barbarum Polysaccharide", claims a specific preparation method for a Lycium barbarum polysaccharide compound and its pharmaceutical applications. The patent focuses on extracting and processing polysaccharides from Lycium barbarum (goji berry) to create a therapeutic compound.
The primary objective of the invention is to overcome existing deficiencies in Lycium barbarum polysaccharide preparations, such as low purity, low yield, and poor stability. The patent aims to provide a preparation method that results in a high-purity, high-yield, and stable Lycium barbarum polysaccharide compound suitable for pharmaceutical use [1].
What specific aspects of the invention are protected by the claims?
The patent's claims define the legal boundaries of its protection. CN105056211 includes several independent and dependent claims that cover different facets of the invention. Key areas protected include:
Claim 1: Preparation Method
Claim 1, as an independent claim, describes the core preparation process. It involves specific steps of material selection, extraction, purification, and concentration. While the exact sequence and parameters are detailed in the patent document, the general steps include:
- Material Preparation: Selecting high-quality Lycium barbarum fruits.
- Extraction: Employing a specific solvent and temperature for extracting polysaccharides. This step is crucial for maximizing yield and minimizing degradation of the active compounds.
- Purification: Utilizing a multi-stage purification process, potentially involving filtration, precipitation, and chromatographic techniques, to isolate the desired polysaccharide fractions from other plant constituents.
- Concentration and Drying: Evaporating excess solvent and drying the purified product to obtain a stable powder form.
The precise chemical and physical parameters specified in Claim 1, such as solvent composition, extraction time, temperature ranges, and purification agents, are vital for defining the scope of protection. These details aim to differentiate the patented method from prior art and ensure reproducibility.
Claim 2: Lycium Barbarum Polysaccharide Compound
Dependent on Claim 1, this claim likely specifies the characteristics of the Lycium barbarum polysaccharide compound obtained by the claimed method. This could include purity levels, molecular weight distribution, or specific biological activity profiles. This claim ensures that the resulting product, not just the process, is protected.
Claim 3: Pharmaceutical Composition
This claim likely covers a pharmaceutical composition comprising the Lycium barbarum polysaccharide compound obtained from the patented method, along with pharmaceutically acceptable excipients. This broadens the patent's protection to include the final drug product formulated for therapeutic use. Excipients can include binders, fillers, disintegrants, and stabilizers, all chosen to enhance the drug's efficacy, stability, and delivery.
Claims 4 and Beyond: Specific Applications
Subsequent claims (often dependent) are expected to detail specific therapeutic applications of the Lycium barbarum polysaccharide compound and its pharmaceutical compositions. Based on the known biological activities of Lycium barbarum polysaccharides, these applications could include:
- Immunomodulatory Effects: Enhancing immune system function, potentially for use in treating immune deficiencies or as an adjunct therapy in cancer treatment.
- Antioxidant Properties: Combating oxidative stress, relevant for age-related diseases and conditions linked to free radical damage.
- Anti-inflammatory Effects: Reducing inflammation, applicable to conditions like arthritis or inflammatory bowel disease.
- Metabolic Regulation: Potential roles in managing blood sugar levels or improving lipid profiles, relevant for diabetes and cardiovascular health.
The specificity of these claimed applications is critical. Broad claims for general health benefits might be challenged if not supported by sufficient experimental data within the patent.
What is the current patent landscape surrounding Lycium barbarum polysaccharide and its therapeutic uses?
The patent landscape for Lycium barbarum polysaccharides and their therapeutic applications is active and evolving. Multiple entities, including academic institutions and pharmaceutical companies, are exploring the potential of these natural compounds.
Key Players and Trends
- Geographic Distribution: Patents related to Lycium barbarum polysaccharides are filed globally, with significant activity in China, reflecting the traditional use of goji berries in Chinese medicine. Other regions with considerable filings include the United States, Europe, and other parts of Asia.
- Focus Areas: Research and patenting efforts concentrate on specific extraction and purification techniques to isolate bioactive polysaccharide fractions (e.g., LBP-a, LBP-b). Therapeutic applications are also a major driver, with emphasis on immunomodulation, antioxidant, anti-diabetic, and anti-cancer properties.
- Novelty and Inventive Step: To secure patent protection, new inventions must demonstrate novelty (being new) and an inventive step (not being obvious to a person skilled in the art). For Lycium barbarum polysaccharides, this often involves:
- Novel extraction methods yielding higher purity or specific molecular weight fractions.
- New formulations improving bioavailability or stability.
- Identification of new therapeutic uses supported by robust preclinical and clinical data.
- Compositions combining Lycium barbarum polysaccharides with other active ingredients.
- Competitiveness: The landscape indicates a competitive environment. Companies holding patents on specific Lycium barbarum polysaccharide compounds or their validated therapeutic uses may face challenges from new entrants claiming improved methods or novel applications. The strength of a patent's claims and the thoroughness of prior art searches are critical in this context.
Example of Landscape Elements
| Patent Type |
Focus Area |
Application Example |
| Composition Patent |
Purified Lycium barbarum polysaccharide fractions |
Immunomodulatory agent |
| Process Patent |
Novel extraction and purification methods |
Increased yield and purity of bioactive polysaccharides |
| Method of Treatment Patent |
Specific diseases or conditions targeted by the compound |
Adjunct therapy for chemotherapy side effects |
| Formulation Patent |
Oral dosage forms, injectables, topical creams |
Enhanced delivery and stability of Lycium barbarum polysaccharides |
CN105056211 is situated within this dynamic landscape. Its success and market position will depend on the strength and enforceability of its claims against existing and emerging patents. Competitors may seek to design around its claims by developing alternative preparation methods or identifying distinct therapeutic applications.
What are the potential implications of CN105056211 for R&D and investment?
The existence and scope of CN105056211 have several implications for research and development (R&D) and investment decisions in the pharmaceutical and nutraceutical sectors.
R&D Implications
- Freedom to Operate: Companies developing Lycium barbarum polysaccharide-based products must conduct thorough freedom-to-operate (FTO) analyses. CN105056211 may block the development or commercialization of products that utilize the specific preparation method claimed or compositions derived from it.
- Innovation Focus: The patent's claims can guide R&D efforts. Innovations might focus on:
- Developing alternative extraction and purification methods that do not infringe on CN105056211.
- Identifying and patenting novel therapeutic applications not covered by the existing patent.
- Improving existing formulations for enhanced efficacy, stability, or patient compliance.
- Exploring synergistic effects of Lycium barbarum polysaccharides with other active compounds.
- Due Diligence: For companies considering acquiring or licensing Lycium barbarum polysaccharide technologies, understanding the precise scope of CN105056211 is crucial for due diligence.
Investment Implications
- Market Entry Barriers: CN105056211 could create barriers to entry for new market participants seeking to develop or sell similar products.
- Licensing Opportunities: The patent holder may offer licensing agreements, presenting an opportunity for companies to gain access to the patented technology under specific terms and conditions.
- Risk Assessment: Investors must assess the risk associated with CN105056211 and its potential impact on the commercial viability of Lycium barbarum polysaccharide-based products. This includes evaluating the patent's validity, enforceability, and the potential for infringement litigation.
- Competitive Intelligence: Monitoring patent filings and granted patents in this area, including CN105056211, provides valuable competitive intelligence, informing investment strategies and identifying potential acquisition targets or partnership opportunities.
- Valuation: The strength and scope of patents like CN105056211 can influence the valuation of companies operating in this space. A strong patent portfolio can significantly enhance a company's perceived value and market position.
Key Takeaways
Chinese patent CN105056211 protects a specific method for preparing Lycium barbarum polysaccharide compounds and their pharmaceutical applications. The patent's claims likely cover the preparation process, the resulting compound, and pharmaceutical compositions incorporating it, along with specific therapeutic uses. The patent landscape for Lycium barbarum polysaccharides is competitive, with ongoing innovation in extraction techniques and therapeutic applications. Companies involved in this field must conduct FTO analyses, and investors should assess the patent's implications for market entry, licensing, and risk.
FAQs
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Does CN105056211 cover all Lycium barbarum polysaccharide preparations?
No, CN105056211 specifically covers the preparation method and resulting compounds as detailed in its claims. Other methods of preparation or different polysaccharide fractions may not be covered if they do not fall within the scope of the patent's claims.
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What are the primary therapeutic areas addressed by the patent?
While the exact therapeutic areas are detailed in the patent, Lycium barbarum polysaccharides are generally known for immunomodulatory, antioxidant, anti-inflammatory, and potential metabolic regulation effects. The patent likely specifies one or more of these applications.
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Can a company in China manufacture Lycium barbarum polysaccharides if they are not using the method claimed in CN105056211?
A company may be able to manufacture Lycium barbarum polysaccharides if their process and product do not infringe on the specific claims of CN105056211. However, they must also ensure they do not infringe on any other valid patents.
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What is the duration of protection for CN105056211?
In China, the standard term of protection for a utility patent is 20 years from the filing date. To determine the exact expiry date, one would need to consult the patent's filing date.
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How can a competitor bypass the claims of CN105056211?
Competitors can seek to "design around" the patent by developing alternative preparation methods that are sufficiently different to avoid infringement, or by focusing on therapeutic applications not covered by the patent's claims. They may also challenge the patent's validity.
Citations
[1] National Intellectual Property Administration of the People's Republic of China. (n.d.). Patent CN105056211A: A preparation method and application of compound compound of Lycium Barbarum Polysaccharide.
