Patent No. EP2404515 (titled "Improved Atomizing Electronic Cigarette") was filed by Fontem on Jan 28, 2010. The application was issued on Sep 9, 2015.

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 |
|---|---|---|
| EISENFUHR SPEISER | Jun 9, 2016 | EISENFUHR SPEISER |
| JOYETECH DEUTSCHLAND GMBH | Jun 9, 2016 | HERMANN |
| PHILIP MORRIS | Apr 27, 2016 | GRITSCHNEDER |
| NICOVENTURES | Nov 20, 2015 | D YOUNG |
| JT INTERNATIONAL S.A. | Sep 10, 2015 | ISARPATENT |
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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