Cationic Amphiphilic Polymers for Specialized Therapeutic Delivery

Publication ID: 24-11857634_0009_PTD
Published: October 28, 2025
Category:Specialized Variations & Niche Solutions

Legal Citation

pr1or.art Inc., “Cationic Amphiphilic Polymers for Specialized Therapeutic Delivery,” Published Technical Disclosure No. 24-11857634_0009_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857634_0009_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. 11,857,634.

Summary of the Inventive Concept

A novel formulation of cationic amphiphilic polymers adapted for delivery of therapeutic compounds in extreme weather conditions, high-security needs, disaster relief, and unique operational environments.

Background and Problem Solved

The original patent disclosed cationic amphiphilic polymers for co-delivery of hydrophobic agents and nucleic acids, but it did not address the challenges of delivering therapeutic compounds in specialized environments. The new inventive concept addresses this limitation by adapting the polymers for use in extreme weather conditions, high-security needs, disaster relief, and unique operational environments, ensuring effective delivery of therapeutic compounds in these challenging situations.

Detailed Description of the Inventive Concept

The new inventive concept comprises a formulation of cationic amphiphilic polymers with a hydrophobic polymer backbone formed via radical polymerization, and pendant groups attached to the backbone. The polymers are adapted to withstand extreme weather conditions, such as high winds and heavy rainfall, and high-security needs, such as being undetectable by security scanners. The formulation is designed to deliver therapeutic compounds, including small molecule therapeutic compounds with a molecular weight below 1 kDa, RNA or DNA, and genes or siRNA, in a variety of operational environments, including disaster relief, extreme cold, and high-altitude environments.

Novelty and Inventive Step

The new claims introduce novel adaptations of the original polymer formulation to address specific challenges in specialized environments, including extreme weather conditions, high-security needs, disaster relief, and unique operational environments. The inventive step lies in the tailored design of the polymers to withstand these challenging conditions, ensuring effective delivery of therapeutic compounds.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include adaptations for use in other specialized environments, such as space exploration or underwater operations. Variations of the polymers could include different pendant groups or backbone structures to optimize delivery in specific environments.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the pharmaceutical and biotechnology industries, particularly in areas such as disaster relief, high-security needs, and extreme environment operations. The market for specialized therapeutic delivery systems is growing, and this inventive concept is well-positioned to capture a significant share of this market.

CPC Classifications

SectionClassGroup
A A61 A61K47/58
A A61 A61K9/1075
A A61 A61K31/65
A A61 A61K47/549
C C12 C12N15/113
C C12 C12N2310/14
C C12 C12N2310/351

Field of Art

Pharmaceutical drug delivery systems, polymer chemistry, and nanomedicine, with expertise in cationic amphiphilic polymer design for therapeutic compound encapsulation and targeted delivery

Person of Ordinary Skill (PHOSITA) Profile

A researcher with advanced degrees in polymer chemistry or pharmaceutical sciences, experienced in designing drug delivery systems, familiar with radical polymerization techniques, and knowledgeable about polymer modification strategies

Obviousness Rationale

A person having ordinary skill would recognize that the PTD's variations represent predictable extensions of the source patent's core polymer delivery technology. The fundamental polymer backbone and delivery mechanism remain substantially unchanged, with the primary innovation being environmental adaptations. These modifications would be considered routine engineering design choices within the established framework of the original patent's therapeutic delivery system.

Obvious Combinations & Variations

Source Patent Element
Hydrophobic polymer backbone formed via radical polymerization with cationic pendant groups
PTD Variation
Adapting polymer structure to withstand extreme weather and temperature conditions
Obviousness Reasoning
Modifying polymer backbone composition to enhance environmental stability is a predictable solution using known polymer engineering techniques
Source Patent Element
Delivery of small molecule therapeutic compounds with molecular weight below 1 kDa
PTD Variation
Specialized delivery systems for high-altitude, disaster relief, and high-security environments
Obviousness Reasoning
Tailoring existing delivery mechanisms to specific operational contexts represents a standard design optimization approach
Source Patent Element
Polymers capable of co-delivering multiple therapeutic compounds like small molecules and nucleic acids
PTD Variation
Developing polymers undetectable by security scanners and adaptable to emergency medical scenarios
Obviousness Reasoning
Expanding delivery capabilities to address specialized environmental constraints is an obvious technological progression
Source Patent Element
Cationic amphiphilic polymer formulation for therapeutic compound encapsulation
PTD Variation
Creating polymer systems optimized for extreme operational environments like space or underwater applications
Obviousness Reasoning
Extending polymer technology to novel environments is a foreseeable application of existing drug delivery principles
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857634, the variations disclosed in the Published Technical Disclosure would be considered obvious to a person having ordinary skill in the art of polymer-based drug delivery systems. The incremental modifications represent predictable engineering adaptations that do not rise to the level of non-obvious innovation, thereby establishing this disclosure as valid prior art under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,634
TitleCationic amphiphilic polymers for codelivery of hydrophobic agents and nucleic acids
Assignee(s)UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION