Enhanced Opioid Antagonist Delivery Systems

Publication ID: 24-11857547_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Opioid Antagonist Delivery Systems,” Published Technical Disclosure No. 24-11857547_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857547_0006_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. 11,857,547.

Summary of the Inventive Concept

This inventive concept discloses improved opioid antagonist delivery systems, addressing the limitations of existing formulations and methods. The new systems provide enhanced bioavailability, rapid overdose rescue, and efficient treatment of alcohol dependence and constipation.

Background and Problem Solved

The original patent relates to compositions and methods for opioid antagonist delivery. However, the existing formulations have limitations, such as poor solubility, slow onset of action, and limited shelf-life. The new inventive concept addresses these limitations by introducing optimized pH levels, improved solubility profiles, and controlled-release formulations.

Detailed Description of the Inventive Concept

The inventive concept comprises five key aspects: 1) a system for opioid antagonist delivery featuring a portable injector and a formulation with an optimized pH level for enhanced bioavailability; 2) a method for rapid opioid overdose rescue using a parenteral formulation with an improved solubility profile; 3) a composition for treating alcohol dependence comprising a combination of an opioid antagonist and a mu-opioid receptor antagonist; 4) a drug delivery system for constipation treatment utilizing a controlled-release opioid antagonist formulation; and 5) a kit for pre-dosing a subject against opioid overdose comprising a parenteral formulation with an extended shelf-life and a user-friendly administration device.

Novelty and Inventive Step

The new claims introduce significant improvements over the original patent, including optimized pH levels, improved solubility profiles, and controlled-release formulations. These advancements provide enhanced bioavailability, rapid overdose rescue, and efficient treatment of alcohol dependence and constipation, which are not obvious from the original patent.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include different formulations, such as oral or transdermal delivery systems, or variations in the composition of the opioid antagonist and mu-opioid receptor antagonist. Additionally, the controlled-release formulation could be adapted for other indications, such as pain management or addiction treatment.

Potential Commercial Applications and Market

The enhanced opioid antagonist delivery systems have significant commercial potential in the pharmaceutical industry, particularly in the areas of overdose rescue, addiction treatment, and pain management. The target markets include hospitals, emergency responders, and healthcare providers, as well as individuals and families affected by opioid addiction.

Original Patent Information

Patent NumberUS 11,857,547
TitleCompositions and methods for opioid antagonist delivery
Assignee(s)Purdue Pharma L.P.