Patent No. EP2506953 (titled "Filter Element For An Extractor Hood And Extractor Hood") was filed by BSH Bosch UND Siemens Hausgerte on Nov 5, 2010. The application was issued on Jan 10, 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 |
|---|---|---|
| WINKLER UWE | Oct 9, 2018 | DILG |
| BORA VERTRIEBS | Oct 9, 2018 | RAU |
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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