Patent No. EP3918930 (titled "Aerosol Generation Device") was filed by Kt&G on Mar 19, 2021. The application was issued on Mar 19, 2025.
An aerosol generating device for cigarettes that heats the inside, outside, and one end portion of the cigarette to shorten preheating time and prevent carbonization. The device has a heater with three sections: an inner section along the inside, a lower section in the bottom, and an extending section along the length. These sections are thermally connected and heated at decreasing temperatures from the inner section to the outer sections. This simultaneous multi-point heating avoids excessive temperature differences that can carbonize the inside or cause long preheating times.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents