Patent No. EP3516972 (titled "Electronic Cigarette And Atomizer Thereof") was filed by Shenzhen Smoore Technology on Dec 11, 2017. The application was issued on Dec 2, 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 |
|---|---|---|
| IMPERIAL TOBACCO | Sep 2, 2021 | HASELTINE LAKE KEMPNER |
| IMPERIAL TOBACCO | Sep 2, 2021 | MEWBURN ELLIS |
| SHENZHEN RELX TECHNOLOGY | Sep 1, 2021 | KLUNKER PATENTANWALTE PARTG MBB |
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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