Patent No. EP2908720 (titled "Device And Method For Detecting And Signalling A Stress State Of A Person") was filed by Xotox Tools on Sep 20, 2013. The application was issued on Nov 6, 2019.

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 |
|---|---|---|
| FIRSTBEAT ANALYTICS | Sep 13, 2022 | HEPP WENGER RYFFEL |
| FIRSTBEAT | Jul 31, 2020 | HEPP WENGER RYFFEL |
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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