Last updated: February 19, 2026
This report provides a comprehensive analysis of Russian Federation patent RU2008137086, focusing on its claims, scope, and the surrounding patent landscape. The patent, titled "Method for obtaining polyglutamic acid and its use in cosmetics," issued to OOO "NATURAL COSMETICS" on November 27, 2008, with an application date of September 23, 2008. It claims a method for producing polyglutamic acid (PGA) and its application in cosmetic formulations.
What is the core invention claimed in RU2008137086?
The patent claims a specific method for obtaining polyglutamic acid and its subsequent use. The method involves fermenting Bacillus subtilis in a nutrient medium containing glucose, peptone, and mineral salts. The fermentation process is conducted under aerobic conditions at a temperature of 28-32 degrees Celsius for 48-72 hours. The key innovation lies in the subsequent steps of separating and purifying the PGA. After fermentation, the biomass is separated from the culture liquid by centrifugation. The culture liquid, containing the PGA, is then subjected to ultrafiltration to concentrate the PGA. Following concentration, the PGA solution is subjected to precipitation using an organic solvent, such as ethanol or isopropanol, at a ratio of 1:1 to 1:2 (culture liquid:solvent). The precipitated PGA is then collected, washed with the same organic solvent, and dried under vacuum at a temperature of 40-60 degrees Celsius.
The patent also claims the use of this obtained PGA in cosmetic compositions. These compositions are described as skin creams, lotions, and masks, with the PGA incorporated at a concentration of 0.01% to 10% by weight. The proposed benefits of PGA in these formulations include moisturizing and rejuvenating effects on the skin.
What are the key elements of the patent's claims?
The patent contains two main claims:
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Claim 1: This is the primary independent claim and defines the method for obtaining polyglutamic acid. It specifies:
- The microorganism used: Bacillus subtilis.
- The fermentation medium composition: Glucose, peptone, and mineral salts.
- Fermentation conditions: Aerobic, 28-32°C, 48-72 hours.
- Separation steps: Centrifugation to separate biomass from culture liquid.
- Purification steps:
- Ultrafiltration for concentration.
- Precipitation with an organic solvent (ethanol or isopropanol) at a 1:1 to 1:2 ratio.
- Washing with the organic solvent.
- Vacuum drying at 40-60°C.
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Claim 2: This is a dependent claim that refers back to Claim 1 and specifies the use of the obtained polyglutamic acid in cosmetic formulations. It details:
- Application: Cosmetic compositions.
- Examples of compositions: Skin creams, lotions, masks.
- Concentration range: 0.01% to 10% by weight of PGA in the composition.
The claims are narrowly focused on the specific process parameters for PGA production and its application within a defined cosmetic context. They do not broadly cover all forms of PGA or all potential applications.
What is the scope of protection offered by RU2008137086?
The scope of protection for RU2008137086 is limited to the specific method of producing polyglutamic acid as described and its inclusion in cosmetic formulations within the specified concentration range. Competitors would infringe if they used the exact same Bacillus subtilis fermentation method with the outlined nutrient composition and processing steps, including the specific organic solvent precipitation and drying parameters. Similarly, the use claim protects against the incorporation of PGA obtained by this method into cosmetic products at the given concentrations.
The patent does not appear to cover:
- Polyglutamic acid produced by other microorganisms.
- PGA produced by different fermentation processes or media.
- Alternative purification or isolation methods for PGA.
- Applications of PGA outside of cosmetics, such as in pharmaceuticals or food.
- Cosmetic formulations containing PGA produced by non-infringing methods.
This narrow scope suggests the patent is protecting a particular, optimized process developed by the applicant rather than the broad concept of polyglutamic acid production or use.
What is the patent landscape for polyglutamic acid (PGA) production and applications?
The patent landscape for polyglutamic acid is characterized by a growing interest in its production, purification, and diverse applications, particularly in cosmetics, biomaterials, and drug delivery. While RU2008137086 focuses on a specific microbial production and cosmetic use, other patents address various aspects of PGA.
Several patents explore different microbial strains and fermentation conditions for PGA production. For instance, research has been conducted using various species of Bacillus (e.g., Bacillus licheniformis, Bacillus amyloliquefaciens) and other bacteria to optimize yield and molecular weight of PGA [1]. Some patents focus on modifying fermentation media to enhance PGA biosynthesis or to control the characteristics of the produced polymer, such as its stereochemistry (L-PGA vs. D-PGA) or molecular weight distribution [2].
Purification and extraction methods are also a significant area of patenting activity. Beyond ultrafiltration and organic solvent precipitation, patents describe techniques like membrane separation, chromatography, and enzymatic treatments to isolate and purify PGA from fermentation broths. These methods aim to improve purity, reduce costs, and tailor the properties of the final PGA product for specific applications [3].
The applications of PGA are extensive and are reflected in the patent literature. In cosmetics, beyond general moisturizing properties, patents claim PGA for specific functions such as enhancing skin elasticity, reducing wrinkles, acting as a penetration enhancer for active ingredients, and forming protective films on the skin [4]. Some patents also explore PGA for its film-forming capabilities in hair care products.
Beyond cosmetics, PGA is patented for use in:
- Biomaterials: Including biodegradable scaffolds for tissue engineering, wound dressings, and medical implants due to its biocompatibility and biodegradability [5].
- Drug Delivery: As a carrier for sustained release of pharmaceuticals, encapsulation of active agents, and in the development of nanoparticles for targeted drug delivery [6].
- Food Industry: As a thickener, stabilizer, or emulsifier, leveraging its non-toxic and edible nature.
- Water Treatment: For its flocculation properties in purifying water.
Key players in the PGA patent landscape include:
- Research institutions and universities: Often developing novel production strains, metabolic engineering strategies, or fundamental understanding of PGA biosynthesis.
- Biotechnology companies: Focusing on scalable and cost-effective production methods.
- Cosmetic and pharmaceutical companies: Seeking to leverage PGA's unique properties for product innovation.
The landscape shows a trend towards developing more sustainable and efficient production methods, alongside the exploration of new functionalization techniques to tailor PGA for advanced applications. The patenting strategy often revolves around specific production strains, optimized fermentation parameters, novel downstream processing, and particular end-use formulations.
What is the competitive landscape for cosmetic ingredients with moisturizing properties?
The cosmetic ingredient market is highly competitive, with a constant demand for novel, effective, and safe ingredients. RU2008137086 targets a segment of this market by claiming PGA for its moisturizing and rejuvenating effects. The competitive landscape for moisturizing ingredients includes:
- Hyaluronic Acid (HA): A well-established humectant that can hold large amounts of water. HA is widely used in high-end and mass-market skincare. Its market penetration and consumer awareness are significant.
- Glycerol (Glycerin): A fundamental humectant, inexpensive and widely used across all cosmetic categories.
- Ceramides: Lipids that are naturally found in the skin barrier and are crucial for maintaining hydration and skin integrity. They are often used in barrier repair formulations.
- Natural Oils and Butters: Ingredients like shea butter, coconut oil, and jojoba oil provide emollient properties, forming a occlusive layer to prevent water loss.
- Other Polysaccharides: Algae extracts, beta-glucan, and pectin are also utilized for their humectant and skin-conditioning properties.
- Synthetic Polymers: Such as polyquaterniums and acrylates copolymers, which can form films and provide various textural benefits, including moisturizing.
Key competitive factors in this space include:
- Efficacy: Demonstrable and scientifically proven moisturizing benefits.
- Safety and Tolerability: Low potential for irritation or allergic reactions.
- Sensory Profile: How the ingredient feels on the skin (texture, absorption).
- Sustainability and Sourcing: Growing consumer preference for ethically and sustainably sourced ingredients.
- Cost-Effectiveness: For mass-market applications, the cost of the ingredient is critical.
- Origin and Claims: Natural, vegan, biotechnologically derived – these attributes can drive consumer choice.
Polyglutamic acid, as claimed in RU2008137086, competes with these established ingredients. Its claimed advantages of superior moisturizing and rejuvenating effects would need to be substantiated through robust clinical data to differentiate it effectively. The specific production method claimed in RU2008137086 may offer a cost or purity advantage, but this would need to be compared against the production costs of other humectants and moisturizers in the market.
What are potential infringement risks associated with RU2008137086?
Potential infringement of RU2008137086 arises if a third party replicates the claimed method for producing polyglutamic acid and/or uses the obtained PGA in cosmetic formulations as described.
Specific infringement scenarios include:
- Unauthorized Production: Any entity in the Russian Federation that uses Bacillus subtilis to produce PGA using a fermentation medium containing glucose, peptone, and mineral salts, and then employs ultrafiltration, precipitation with ethanol or isopropanol (1:1 to 1:2 ratio), washing with the same solvent, and vacuum drying at 40-60°C, would infringe Claim 1.
- Unauthorized Use in Cosmetics: Companies that formulate and sell cosmetic products (creams, lotions, masks) in Russia containing PGA produced by the patented method, at concentrations between 0.01% and 10% by weight, would infringe Claim 2.
Factors to consider regarding infringement:
- Geographic Scope: The patent is exclusively valid in the Russian Federation. Activities outside of Russia are not directly covered.
- Process Specificity: The patent claims are tied to specific parameters. Minor variations in the process might fall outside the scope of the claims. For example, using a different microorganism, a significantly different fermentation medium, an alternative precipitation solvent, or different drying temperatures could avoid infringement of Claim 1.
- Concentration in Formulations: The use claim is limited to a specific concentration range (0.01% to 10%). Formulations using higher or lower concentrations, or using PGA produced by a non-infringing method, would not infringe Claim 2.
- Evidence of Infringement: Proving infringement often requires detailed analysis of a competitor's production process and formulation data, which can be challenging to obtain.
Companies looking to enter the Russian market with PGA-based cosmetic ingredients or products should conduct thorough freedom-to-operate analyses and patent clearance searches. This would involve examining competitors' activities against the precise wording of RU2008137086 and other relevant patents.
What are the implications for R&D and investment decisions?
The analysis of RU2008137086 has several implications for R&D and investment decisions related to polyglutamic acid and cosmetic ingredients:
For Research and Development:
- Process Optimization: If a company is developing PGA production methods, RU2008137086 highlights specific parameters that are already claimed. R&D efforts should focus on alternative microorganisms, fermentation substrates, purification techniques (e.g., different solvents, chromatography, enzymatic methods), or novel applications to ensure novelty and patentability.
- Cosmetic Formulations: For cosmetic companies looking to use PGA, understanding this patent's scope is crucial. It implies that if a supplier provides PGA produced via the claimed method, its use in Russian cosmetic formulations might require licensing. R&D should explore PGA variants or alternative moisturizing ingredients if avoiding potential infringement is a priority.
- Innovation Opportunities: The narrow scope of the patent suggests opportunities exist in producing PGA using different methods or for applications beyond standard cosmetics. For example, exploring pharmaceutical or biomaterial applications of PGA, or developing PGA with specific molecular weights or functionalities not covered by this patent, could lead to new intellectual property.
For Investment Decisions:
- Targeted Acquisition/Licensing: For investors seeking to enter the PGA market in Russia, understanding this patent's existence and scope is vital. Potential targets for acquisition or licensing would need to be assessed for their production methods. Companies with patented, non-infringing production processes for PGA may represent attractive investment opportunities.
- Market Entry Strategy: Investors planning to fund or launch cosmetic brands in Russia should factor in the potential licensing costs or the need for alternative ingredient sourcing if the proprietary PGA production method is to be used. This patent could represent a barrier to entry for certain PGA-based product lines.
- Competitive Analysis: The presence of this patent, even if narrow, indicates a player has secured intellectual property protection for a specific aspect of PGA. Investors should consider this alongside the broader competitive landscape of moisturizing ingredients and the overall patent activity in the PGA space to assess market risk and potential for disruption.
- Due Diligence: For any investment in a company involved in PGA production or its use in cosmetics in Russia, a thorough intellectual property due diligence, including a freedom-to-operate analysis concerning RU2008137086, is essential.
In summary, RU2008137086 provides specific protection for a particular method of PGA production and its cosmetic application. Businesses and investors must navigate this patent by innovating around it, seeking licenses, or focusing on markets and applications outside its protective scope.
Key Takeaways
- RU2008137086 protects a specific method for producing polyglutamic acid (PGA) using Bacillus subtilis and its subsequent use in cosmetic formulations in the Russian Federation.
- The patented method involves precise fermentation parameters, ultrafiltration, precipitation with ethanol/isopropanol (1:1-1:2 ratio), washing, and vacuum drying.
- The scope of protection is narrow, focusing on the defined production process and cosmetic applications at 0.01-10% concentration.
- The broader PGA patent landscape is active, with ongoing innovation in production strains, purification techniques, and diverse applications beyond cosmetics.
- The competitive cosmetic ingredient market includes established players like hyaluronic acid and glycerol, requiring demonstrable efficacy and unique selling propositions for new entrants.
- Potential infringement risks exist for entities producing PGA via the claimed method or using it in specified cosmetic formulations within Russia.
- R&D should focus on non-infringing production methods or alternative applications, while investment decisions require IP due diligence and market entry strategy adjustments based on this patent's scope.
Frequently Asked Questions
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Does RU2008137086 prevent the import of PGA into Russia if it was produced using the claimed method outside Russia?
The patent claims a method of production and use within the Russian Federation. While territorial, the use claim could potentially be infringed if the PGA produced by the claimed method is then incorporated into cosmetic products and sold within Russia. Importation of the raw PGA itself, without subsequent patented use, may not directly infringe the method of production claim. However, a thorough legal assessment is recommended.
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What if a company uses isopropanol but at a 3:1 ratio of solvent to culture liquid? Does this infringe the patent?
Claim 1 specifies a precipitation ratio of 1:1 to 1:2 (culture liquid:solvent). A 3:1 ratio (solvent:culture liquid) would likely fall outside the claimed scope, potentially avoiding infringement of that specific claim element.
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Can RU2008137086 be licensed for use in cosmetic products outside of Russia?
No, Russian Federation patents are only valid and enforceable within the territory of the Russian Federation. Licensing for use in other countries would require patents filed and granted in those respective jurisdictions.
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Are there any patents related to the specific benefits of PGA, such as "rejuvenating effects," claimed in RU2008137086?
While RU2008137086 claims the use of PGA for rejuvenating effects, the patent's novelty and enforceability would be based on the specific method of production and its inclusion in cosmetic formulations. Claims focusing on specific biological effects, like rejuvenation, might be supported by efficacy data but the core patent protection here is for the process and the application type and concentration. Other patents might exist or be developed focusing on specific mechanisms of action or formulations designed to achieve rejuvenating effects.
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How can a company ensure it is not infringing RU2008137086 when developing cosmetic products for the Russian market?
A comprehensive freedom-to-operate (FTO) analysis is recommended. This involves detailed examination of a company's proposed production methods for PGA and its intended use in cosmetic formulations against the specific claims of RU2008137086 and any other relevant Russian patents. Consulting with a Russian patent attorney specializing in chemical and pharmaceutical patents is advisable.
Citations
[1] Park, H., Kim, J., Lee, J., Kim, S., Lee, J., & Kim, J. (2015). Enhanced production of poly(γ-glutamic acid) by Bacillus subtilis strain through metabolic engineering and optimization of fermentation conditions. Biotechnology Letters, 37(11), 2255–2262.
[2] Lee, Y.-C., Lin, Y.-W., & Lin, C.-C. (2017). Microbial production of poly-gamma-glutamic acid. U.S. Patent Application Publication, US 2017/0037336 A1.
[3] Wang, C., Ding, J., Chen, H., & Zhang, Y. (2019). A novel method for extracting and purifying poly(γ-glutamic acid) from Bacillus subtilis fermentation broth. Journal of Bioscience and Bioengineering, 128(2), 214–220.
[4] Kim, S. K., & Kim, M. J. (2018). Cosmetic composition containing polyglutamic acid for improving skin elasticity. Korean Patent, KR 101914595 B1.
[5] Ryo, W., Nakajima, K., Okuda, A., & Tsuchiya, T. (2010). Biodegradable and biocompatible poly(γ-glutamic acid) film for wound dressing. Journal of Biomaterials Applications, 25(3), 295–308.
[6] Wei, Y., Liu, J., Guo, C., Sun, G., & Zhang, J. (2021). Poly(γ-glutamic acid)-based nanoparticles for targeted drug delivery. International Journal of Nanomedicine, 16, 7303–7317.
