Patent No. EP2679909 (titled "Inspection System, Method Of Operating A Cooking Device, And Method Of Determining Whether Food Cooked In A Cooking Device Has Been Properly Cooked") was filed by Convotherm Elektrogerte on May 8, 2013. The application was issued on Jul 12, 2017.

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 |
|---|---|---|
| RATIONAL | Apr 12, 2018 | PRINZ & PARTNER 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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