Patent No. EP3457874 (titled "Article For Use In Apparatus For Heating Smokable Material") was filed by British American Tobacco on May 19, 2017. The application was issued on Oct 22, 2025.
Article for use with heat-not-burn tobacco products, comprising a heatable material that releases compounds without combustion, and a kit including the article and a heat-not-burn apparatus for heating the material.

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.
| Company | Opposition Date | Representative |
|---|---|---|
| PHILIP MORRIS | Feb 15, 2021 | GRUNECKER |
| PHILIP MORRIS | Feb 15, 2021 | GRUNECKER PATENT |
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.
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