Patent No. EP2771897 (titled "Cutting Chamber Provided With A Tube For Limiting The Impact Of The Particle Generation, And Electrical Cutting Apparatus Provided With Such A Cutting Chamber") was filed by Alstom Technology on Oct 26, 2012. The application was issued on Oct 3, 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.
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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