Lactobacillus paracasei MG4272 Strain for Novel Applications

Publication ID: 24-11857580_0007_PTD

Published: October 28, 2025

Category:New Applications & Use Cases

Legal Citation

pr1or.art Inc., “Lactobacillus paracasei MG4272 Strain for Novel Applications,” Published Technical Disclosure No. 24-11857580_0007_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857580_0007_PTD

This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,580.

Summary of the Inventive Concept

The inventive concept expands the antimicrobial effects of Lactobacillus paracasei MG4272 strain to novel applications in plant growth, food preservation, skin treatment, industrial equipment, and oral health, leveraging its stability and antimicrobial properties.

Background and Problem Solved

The original patent disclosed the antimicrobial effects of Lactobacillus paracasei MG4272 strain against Gardnerella vaginalis and Candida albicans in the context of vaginal health. However, the potential of this strain extends beyond vaginal health to other industries and applications. The inventive concept addresses the limitations of the original patent by exploring new use cases for the strain, thereby unlocking its full potential.

Detailed Description of the Inventive Concept

The inventive concept comprises a system, composition, or method utilizing the Lactobacillus paracasei MG4272 strain to promote healthy microbial growth, enhance plant resistance, reduce spoilage, treat skin conditions, reduce biofilm formation, and improve oral health. The strain's stability at various pH levels, autoaggregation ability, and sugar fermentation activity make it an ideal candidate for these novel applications.

Novelty and Inventive Step

The new claims introduce a non-obvious extension of the original patent's concept, applying the Lactobacillus paracasei MG4272 strain to entirely new industries and fields, thereby demonstrating a novel and inventive step beyond the original patent.

Alternative Embodiments and Variations

Alternative embodiments may include modifying the strain's growth conditions, combining it with other microorganisms, or using different delivery methods to achieve the desired effects in the respective applications.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the agriculture, food, cosmetics, industrial equipment, and oral health industries, offering a natural, non-toxic solution to various problems and improving overall efficiency and health outcomes.

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Microbiology, specifically probiotic microorganism applications in medical, agricultural, and industrial biotechnology, with expertise in Lactobacillus strain characterization and functional applications

Person of Ordinary Skill (PHOSITA) Profile

A microbiologist with advanced degree, experience in microbial strain isolation, characterization of probiotic properties, understanding of microbial interactions, and knowledge of cross-industry applications of bacterial strains

Obviousness Rationale

A PHOSITA would recognize that the Lactobacillus paracasei MG4272 strain's established antimicrobial properties naturally suggest broader applications beyond its original vaginal microbiome context. The strain's demonstrated stability across pH ranges and autoaggregation ability make it a versatile candidate for extension into plant, food, industrial, and health applications. The technical characteristics that enable its original antimicrobial function would predictably translate to similar inhibitory effects in diverse environments.

Obvious Combinations & Variations

Source Patent Element

Lactobacillus paracasei MG4272 strain with antimicrobial activity against Gardnerella vaginalis and Candida albicans

PTD Variation

Application of strain to plant root systems to enhance fungal pathogen resistance

Obviousness Reasoning

Known microbial antagonism techniques and predictable antifungal properties make agricultural application an obvious extension of the strain's inherent characteristics

Source Patent Element

Strain's stability at pH 3-9 and autoaggregation ability

PTD Variation

Use in food preservation and industrial biofilm prevention

Obviousness Reasoning

Robust pH tolerance and aggregation properties indicate adaptability to diverse environmental conditions, making industrial applications a predictable design choice

Source Patent Element

Antimicrobial activity against specific microorganisms

PTD Variation

Topical skin treatment and oral health applications

Obviousness Reasoning

Established inhibitory effects against specific pathogens naturally suggest potential for treating infections in different biological environments

Source Patent Element

Sugar fermentation capabilities of the strain

PTD Variation

Enhanced metabolic adaptability for multiple application contexts

Obviousness Reasoning

Metabolic flexibility indicates potential for broader biotechnological interventions across different substrate environments

Source Patent Element

Isolation from human vaginal microbiome

PTD Variation

Cross-domain application in plant, food, and industrial systems

Obviousness Reasoning

Microbial strains with robust characteristics are often adaptable across different ecological niches, making interdisciplinary applications a routine scientific exploration

35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. § 103, the variations disclosed in the Published Technical Disclosure render obvious any subsequent patent claims covering the Lactobacillus paracasei MG4272 strain's applications in plant growth, food preservation, skin treatment, industrial biofilm prevention, and oral health, as these applications represent predictable extensions of the antimicrobial characteristics originally disclosed in US Patent 11857580, based on the strain's inherent technical properties and a PHOSITA's standard problem-solving approach.

Original Patent Information

Patent Number	US 11,857,580
Title	Lactobacillus having antimicrobial effect on Gardnerella vaginalis and Candida albicans
Assignee(s)	Mediogen Co., Ltd.