Patent No. EP3275324 (titled "Data Connection For An Electronic Smoking Device") was filed by Fontem on Jul 25, 2017. The application was issued on Nov 11, 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 11, 2021 | D YOUNG |
| PHILIP MORRIS | Aug 10, 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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