Enhanced Gel Ophthalmic Formulations of Pilocarpine and Brimonidine Compounds for Presbyopia Treatment

Publication ID: 24-11857539_0001_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Gel Ophthalmic Formulations of Pilocarpine and Brimonidine Compounds for Presbyopia Treatment,” Published Technical Disclosure No. 24-11857539_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857539_0001_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. 11,857,539.

Summary of the Inventive Concept

This inventive concept improves the original gel ophthalmic formulations of pilocarpine and brimonidine compounds by introducing novel enhancements that address limitations of the original patent, providing better efficacy, safety, and patient comfort in presbyopia treatment.

Background and Problem Solved

The original patent disclosed gel ophthalmic formulations of pilocarpine and brimonidine compounds for treating presbyopia. However, these formulations had limitations, such as inconsistent dosing, pH-dependent degradation, and potential ocular side effects. This new inventive concept addresses these limitations by introducing precision dosing devices, pH-adjusting excipients, novel buffer systems, and soothing agents, enhancing the overall efficacy and safety of the formulations.

Detailed Description of the Inventive Concept

The new inventive concept comprises four key enhancements to the original gel ophthalmic formulations. Firstly, a precision dosing device ensures accurate and consistent dosing, reducing the risk of under- or over-dosing. Secondly, a pH-adjusting excipient optimizes the pH range for maximum bioavailability of the active pharmaceutical ingredients. Thirdly, a novel buffer system minimizes the pH-dependent degradation of the pilocarpine and brimonidine compounds. Lastly, a soothing agent is incorporated to reduce irritation and discomfort associated with the use of these compounds. These enhancements work in synergy to provide better efficacy, safety, and patient comfort in presbyopia treatment.

Novelty and Inventive Step

The new claims introduce several novel and non-obvious features compared to the original patent, including the use of precision dosing devices, pH-adjusting excipients, novel buffer systems, and soothing agents. These features provide a significant improvement over the original formulations, addressing specific limitations and providing better outcomes for patients.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include using different types of precision dosing devices, such as micro-needles or iontophoresis systems. Additionally, various pH-adjusting excipients or buffer systems could be employed to optimize the formulation's performance. Furthermore, different soothing agents or combinations of agents could be used to minimize ocular side effects.

Potential Commercial Applications and Market

The enhanced gel ophthalmic formulations of pilocarpine and brimonidine compounds have significant commercial potential in the ophthalmic industry, particularly in the treatment of presbyopia. The market for presbyopia treatment is growing rapidly, driven by an aging population and increasing demand for effective and safe treatments. This inventive concept addresses a specific need in the market, providing a competitive advantage for companies that develop and commercialize these formulations.

Field of Art

Pharmaceutical formulation design, specifically ophthalmic drug delivery systems for treating presbyopia, requiring expertise in pharmaceutical chemistry, drug formulation, and ophthalmological therapeutics

Person of Ordinary Skill (PHOSITA) Profile

A pharmaceutical scientist or formulation engineer with advanced degree in pharmaceutical sciences, experience in ophthalmic drug delivery, knowledge of drug stability, excipient interactions, and dosing technologies

Obviousness Rationale

A PHOSITA would recognize that the PTD's enhancements represent predictable engineering solutions to known limitations in ophthalmic gel formulations. The precision dosing, pH optimization, buffer system, and soothing agent modifications are logical extensions of standard pharmaceutical development practices applied to the existing pilocarpine and brimonidine gel composition. These variations address common challenges in drug delivery and would be considered routine optimization by a skilled practitioner.

Obvious Combinations & Variations

Source Patent Element
Gel ophthalmic composition with pilocarpine and brimonidine compounds
PTD Variation
Incorporation of precision dosing device to ensure accurate drug administration
Obviousness Reasoning
Dosing precision is a known challenge in ophthalmological treatments, and implementing micro-delivery technologies is a predictable solution for improving drug administration accuracy
Source Patent Element
Pharmaceutical gel composition with active pharmaceutical ingredients
PTD Variation
pH-adjusting excipients to optimize bioavailability and stability
Obviousness Reasoning
Modifying pharmaceutical formulation pH to enhance drug performance is a standard technique in pharmaceutical development, representing a known method for improving drug efficacy
Source Patent Element
Ophthalmic gel with pilocarpine and brimonidine compounds
PTD Variation
Novel buffer system to minimize pH-dependent ingredient degradation
Obviousness Reasoning
Developing stabilization strategies for pharmaceutical ingredients is a routine engineering task with finite, predictable solution sets known to those skilled in pharmaceutical formulation
Source Patent Element
Ophthalmic drug composition for treating presbyopia
PTD Variation
Incorporation of soothing agents to reduce patient discomfort
Obviousness Reasoning
Addressing patient tolerability through excipient selection is a standard approach in pharmaceutical product development, representing an obvious improvement to existing formulations
Source Patent Element
Standardized ophthalmic gel composition
PTD Variation
Personalized formulation adaptable to individual patient needs
Obviousness Reasoning
Customization of pharmaceutical products based on patient characteristics is a known trend in precision medicine, representing a logical extension of existing formulation technologies
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857539 and the technical variations disclosed herein, a person having ordinary skill in the art would find the claimed ophthalmic formulation enhancements obvious and lacking inventive merit. The proposed modifications represent routine pharmaceutical engineering practices that would be apparent to a skilled practitioner seeking to improve drug delivery efficacy, stability, and patient experience.

Original Patent Information

Patent NumberUS 11,857,539
TitleGel ophthalmic formulations of pilocarpine and brimonidine compounds and related methods
Assignee(s)Somerset Therapeutics, LLC