Patent No. EP2789250 (titled "An Aerosol Electronic Cigarette") was filed by Fontem on May 15, 2007. The application was issued on Dec 26, 2018.

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 |
|---|---|---|
| ADARES PATENT UND RECHTSANWALTE REININGER & PARTNER | Sep 26, 2019 | - |
| JOYETECH DEUTSCHLAND | Sep 26, 2019 | HERMANN |
| PHILIP MORRIS | Sep 26, 2019 | GRITSCHNEDER |
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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