Next-Generation Hydrocortisone Sodium Phosphate Formulations and Delivery Systems

Publication ID: 24-11857555_0005_PTD
Published: October 28, 2025
Category:Future Evolutions & Paradigm Shifts

Legal Citation

pr1or.art Inc., “Next-Generation Hydrocortisone Sodium Phosphate Formulations and Delivery Systems,” Published Technical Disclosure No. 24-11857555_0005_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857555_0005_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. 11,857,555.

Summary of the Inventive Concept

This inventive concept envisions a next-generation platform for hydrocortisone sodium phosphate formulations and delivery systems, offering improved efficacy, convenience, and patient compliance. It encompasses novel transdermal, topical, oral, and inhalation formulations, as well as innovative manufacturing processes, to address the limitations of current treatments.

Background and Problem Solved

The original patent disclosed an aqueous pharmaceutical formulation of hydrocortisone sodium phosphate and monothioglycerol. However, these formulations have limitations in terms of bioavailability, skin penetration, and patient convenience. The new inventive concept addresses these limitations by introducing novel formulations, delivery systems, and manufacturing processes that provide enhanced therapeutic outcomes and improved patient experience.

Detailed Description of the Inventive Concept

The new inventive concept comprises four main aspects: (1) a transdermal delivery system featuring a wearable patch with a hydrogel matrix containing monothioglycerol, (2) a topical formulation encapsulated in nanoparticles for enhanced skin penetration, (3) an oral formulation utilizing a hydrocortisone sodium phosphate prodrug and a monothioglycerol derivative to improve bioavailability, and (4) an inhalation device employing a liposomal carrier to deliver hydrocortisone sodium phosphate and monothioglycerol. Additionally, a novel manufacturing process involving lyophilization and reconstitution with a buffer solution enables the production of stable liquid formulations.

Novelty and Inventive Step

The new claims introduce novel formulations, delivery systems, and manufacturing processes that are not obvious from the original patent. The use of wearable patches, nanoparticles, prodrugs, and liposomal carriers, as well as the innovative manufacturing process, provide a significant departure from the prior art and demonstrate a non-obvious inventive step.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include variations in the hydrogel matrix composition, nanoparticle design, prodrug structure, and liposomal carrier formulation. Additionally, the manufacturing process could be adapted to accommodate different buffer solutions or lyophilization conditions.

Potential Commercial Applications and Market

The next-generation hydrocortisone sodium phosphate formulations and delivery systems have significant commercial potential in the pharmaceutical industry, particularly in the treatment of inflammatory skin conditions, allergic reactions, and other indications where hydrocortisone is currently used. The target market includes pharmaceutical companies, dermatology and allergy clinics, and patients seeking more effective and convenient treatments.

Field of Art

Pharmaceutical formulations, specifically aqueous injectable and topical corticosteroid preparations with stabilizing agents, requiring advanced knowledge of pharmaceutical chemistry, drug delivery systems, and formulation techniques

Person of Ordinary Skill (PHOSITA) Profile

A pharmaceutical scientist or formulation engineer with advanced degree (PhD/MS) in pharmaceutical sciences, expertise in drug delivery systems, knowledge of corticosteroid chemistry, and experience in developing injectable and topical pharmaceutical compositions

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable extensions of the source patent's core hydrocortisone sodium phosphate and monothioglycerol formulation. The disclosed delivery systems and manufacturing processes leverage known pharmaceutical engineering techniques to improve drug administration and stability. The novel approaches represent incremental innovations using standard pharmaceutical design strategies that would be obvious to a skilled practitioner seeking to optimize drug delivery and patient compliance.

Obvious Combinations & Variations

Source Patent Element
Aqueous pharmaceutical formulation with hydrocortisone sodium phosphate and monothioglycerol
PTD Variation
Transdermal patch delivery system using hydrogel matrix with same active ingredients
Obviousness Reasoning
Transdermal drug delivery is a known technique for controlled release, and adapting the existing formulation to a patch format would be a predictable design variation for improved patient administration
Source Patent Element
Hydrocortisone sodium phosphate pharmaceutical composition
PTD Variation
Nanoparticle encapsulation for enhanced skin penetration
Obviousness Reasoning
Nanoparticle drug delivery is a standard pharmaceutical engineering approach for improving drug absorption, and would be an obvious optimization technique for a PHOSITA seeking enhanced topical delivery
Source Patent Element
Monothioglycerol as a stabilizing agent in aqueous formulation
PTD Variation
Liposomal carrier for inhalation delivery of hydrocortisone sodium phosphate
Obviousness Reasoning
Liposomal drug delivery is a well-established technique for improving drug bioavailability, and incorporating the existing formulation components would be an obvious extension of known pharmaceutical engineering practices
Source Patent Element
Aqueous pharmaceutical formulation with specific concentration ranges
PTD Variation
Prodrug design with monothioglycerol derivative to enhance bioavailability
Obviousness Reasoning
Prodrug strategies are a known pharmaceutical technique for improving drug absorption, and modifying the existing molecular components represents a predictable optimization approach
Source Patent Element
Pharmaceutical composition manufacturing process
PTD Variation
Lyophilization and buffer reconstitution for stable liquid formulation
Obviousness Reasoning
Lyophilization is a standard pharmaceutical manufacturing technique for improving drug stability, and would be an obvious process improvement for a PHOSITA seeking to extend shelf life and storage capabilities
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857555 and the published technical disclosure, a person having ordinary skill in the art would find the claimed variations obvious, as they represent predictable extensions of known pharmaceutical formulation and delivery techniques. The disclosed innovations constitute prima facie obviousness under 35 U.S.C. ยง 103, as they apply standard pharmaceutical engineering approaches to the existing hydrocortisone sodium phosphate and monothioglycerol composition.

Original Patent Information

Patent NumberUS 11,857,555
TitleAqueous pharmaceutical formulation of hydrocortisone sodium phosphate and monothioglycerol
Assignee(s)Antares Pharma, Inc.