Patent No. EP3957884 (titled "Sensor Layer, Diaphragm Valve And Method") was filed by GEM Gebr Mller Apparatebau Kommanditgesellschaft on Aug 19, 2021. The application was issued on Apr 10, 2024.

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 |
|---|---|---|
| GEORG FISCHER ROHRLEITUNGSSYSTEME | Dec 23, 2024 | DIETZ |
| GEORG FISCHER ROHRLEITUNGSSYSTEME | Dec 23, 2024 | GLEISS GROSSE SCHRELL UND PARTNER |
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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