Published Technical Disclosure Archive

Enhanced Systems and Methods for Obtaining 3-Dimensional Lung-Like Epithelium

Publication ID: 24-11857697_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Systems and Methods for Obtaining 3-Dimensional Lung-Like Epithelium,” Published Technical Disclosure No. 24-11857697_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857697_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. 11,857,697.

Summary of the Inventive Concept

The inventive concept disclosed herein relates to enhanced systems and methods for obtaining 3-dimensional lung-like epithelium, improving efficiency, consistency, and scalability of the original method, and addressing its inherent limitations.

Background and Problem Solved

The original patent disclosed a method for obtaining 3-dimensional lung-like epithelium, but it had limitations in terms of efficiency, consistency, and scalability. The new inventive concept addresses these limitations by introducing enhanced systems and methods that improve the culturing process, making it more efficient, consistent, and scalable.

Detailed Description of the Inventive Concept

The new inventive concept comprises a system for obtaining 3-dimensional lung-like epithelium, including a bioreactor designed to maintain a controlled oxygen tension and pH level, and a microfluidic device to create a controlled microenvironment for culturing cells. Additionally, the system includes a plurality of bioreactors connected in series for scaling up production, and a robotic workstation for automating the process. The inventive concept also includes a method for enhancing the efficiency of obtaining 3-dimensional lung-like epithelium, using a machine learning algorithm to predict the optimal culturing conditions.

Novelty and Inventive Step

The new claims introduce novel features such as the use of bioreactors, microfluidic devices, and machine learning algorithms, which are not present in the original patent. These features provide an inventive step by improving the efficiency, consistency, and scalability of the original method.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different types of bioreactors, microfluidic devices, and machine learning algorithms. Additionally, the system could be modified to accommodate different types of cells or culturing conditions.

Potential Commercial Applications and Market

The inventive concept has potential commercial applications in the fields of regenerative medicine, tissue engineering, and biomedical research. The enhanced systems and methods could be used to develop new treatments for lung diseases, and could also be applied to other areas of tissue engineering and regenerative medicine.

CPC Classifications

SectionClassGroup
A A61 A61L27/3895
A A61 A61K35/42
A A61 A61L27/3804
A A61 A61L27/3813
A A61 A61L27/3834
A A61 A61L27/3839
A A61 A61L27/3869
C C12 C12N5/0018
C C12 C12N5/0062
C C12 C12N5/0606
C C12 C12N5/0607
C C12 C12N5/0688
C C12 C12N5/0689
A A61 A61L2430/22
C C12 C12N2501/113
C C12 C12N2501/115
C C12 C12N2501/117
C C12 C12N2501/119
C C12 C12N2501/155
C C12 C12N2501/385
C C12 C12N2501/415
C C12 C12N2501/999
C C12 C12N2506/02
C C12 C12N2506/03
C C12 C12N2506/27
C C12 C12N2506/45
C C12 C12N2513/00

Field of Art

Regenerative medicine and stem cell biology, specifically focused on lung tissue engineering, involving cell culture techniques, differentiation protocols, and advanced biomanufacturing methods

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with a PhD in bioengineering or cell biology, expertise in stem cell differentiation, tissue engineering techniques, and advanced cell culture technologies, familiar with pluripotent stem cell manipulation and 3D tissue generation protocols

Obviousness Rationale

A person having ordinary skill in the art would recognize that the published technical disclosure represents predictable engineering improvements to the source patent's fundamental lung epithelium generation method. The PTD's additions of bioreactor control, microfluidic optimization, and machine learning represent standard technological enhancements commonly applied in advanced cell culture systems. These variations would be considered obvious extensions of the existing methodological framework disclosed in the source patent, applying known technological approaches to improve cell culture efficiency and scalability.

Obvious Combinations & Variations

Source Patent Element
In vitro culturing of NKX2.1+ ventral-anterior foregut spheroid tissue derived from pluripotent stem cells
PTD Variation
Adding controlled bioreactor systems with specific oxygen tension and pH monitoring
Obviousness Reasoning
Precise environmental control is a known technique in cell culture for improving differentiation consistency, representing a predictable optimization of existing cell culture methods
Source Patent Element
Forty-day culturing protocol for cell differentiation
PTD Variation
Implementing machine learning algorithms to predict and optimize culturing conditions
Obviousness Reasoning
Computational optimization of biological protocols is a standard approach in biotechnology, representing an obvious application of machine learning to existing experimental methodologies
Source Patent Element
Pluripotent stem cell-derived tissue generation
PTD Variation
Using microfluidic devices to create controlled microenvironments for cell culture
Obviousness Reasoning
Microfluidic technologies are well-established for creating precise cellular environments, representing a known technique for improving cell culture precision
Source Patent Element
Cell differentiation using Wnt and FGF signaling pathways
PTD Variation
Implementing multiple connected bioreactors for scaled production
Obviousness Reasoning
Scaling up biological manufacturing through parallel processing is a standard engineering approach, representing a predictable extension of existing cell culture techniques
Source Patent Element
NKX2.1+ tissue generation protocol
PTD Variation
Robotic workstation automation of cell culture processes
Obviousness Reasoning
Laboratory automation is a common technique for reducing human error and increasing experimental consistency, representing an obvious technological improvement
35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. ยง 103, the variations disclosed in this published technical disclosure would be considered obvious to a person having ordinary skill in the art at the time of invention, when viewed in light of US Patent 11857697. The disclosed improvements represent predictable technological extensions applying standard bioengineering techniques to the foundational cell culture methodology, thereby rendering potential derivative claims obvious and unpatentable.

Original Patent Information

Patent NumberUS 11,857,697
TitleCompositions and methods for obtaining 3-dimensional lung-like epithelium and related uses thereof
Assignee(s)THE REGENTS OF THE UNIVERSITY OF MICHIGAN