Patent No. EP3232840 (titled "Aerosol-Generating Systems And Methods For Guiding An Airflow Inside An Electrically Heated Aerosol-Generating System") was filed by Philip Morris on Dec 14, 2015. The application was issued on Nov 25, 2020.

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 |
|---|---|---|
| NICOVENTURES | Aug 24, 2021 | D YOUNG |
| NERUDIA | Aug 9, 2021 | CARPMAELS & RANSFORD |
| IMPERIAL TOBACCO | Aug 9, 2021 | CARPMAELS & RANSFORD |
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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