Patent No. EP1789491 (titled "Use Of Polyalkyl(Meth)Acrylate Bead Polymers And Moulding Material For Producing Extruded Moulded Parts With A Matt Surface") was filed by Evonik RHM on Aug 30, 2005. The application was issued on Nov 18, 2020.

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 |
|---|---|---|
| ARKEMA FRANCE | Apr 12, 2018 | SENFF |
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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