Patent No. EP2382056 (titled "Device For The Selective Granulometric Separation Of Solid Powdery Materials Using Centrifugal Action, And Method For Using Such A Device") was filed by Fives FCB on Jan 26, 2010. The application was issued on Jul 23, 2014.

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 |
|---|---|---|
| KHD HUMBOLDT WEDAG | Apr 23, 2015 | CASTELL |
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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