Orodispersible Films: A Systematic Patent Review

Area of Science:

• Pharmaceutical Technology
• Drug Delivery Systems
• Material Science

Background:

• Oral Film Technology (OFT), also known as fast dissolving or orodispersible films, is a rapidly developing oral drug delivery system.
• This dosage form dissolves in the mouth within 1-30 seconds without requiring water, enhancing patient compliance.
• OFT offers advantages such as rapid onset of action, improved bioavailability, and suitability for various patient populations.

Purpose of the Study:

• To review and analyze patents related to orodispersible films from 1979 to 2017.
• To identify key trends in drug selection, polymer excipients, and preparation methods within orodispersible film technology.
• To provide insights into the evolution and optimization strategies for orodispersible film formulations.

Main Methods:

• A comprehensive patent search was conducted using databases including USPTO, Google Patents, Espacenet, and Intellectual Property India.
• Patented inventions were categorized based on the incorporated drugs, polymers used, and manufacturing techniques.
• Analysis focused on identifying recurring themes and innovative approaches in orodispersible film development.

Main Results:

• Significant research efforts have focused on orodispersible films, with numerous patents filed globally.
• A notable trend is the shift towards OFT for improved patient compliance, extended efficacy, enhanced bioavailability, and rapid dissolution/disintegration.
• The selection of polymer blends and optimized preparation methods allows for precise control over critical film parameters like tensile strength, thickness, and pH.

Conclusions:

• The judicious selection of polymers, polymer blends, and manufacturing processes are paramount for successful orodispersible film formulation.
• These formulation components directly influence the film's physical properties and drug release characteristics.
• Further innovation in polymer science and processing techniques will continue to drive advancements in OFT.