Patent No. EP3591022 (titled "Shaped Abrasive Particles With Low Roundness Factor") was filed by M Innovative Properties on Jun 15, 2010. The application was issued on Jul 21, 2021.

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 |
|---|---|---|
| SAINT GOBAIN | Apr 21, 2022 | ZIMMERMANN & PARTNER PATENTANWALTE MBB |
| VSM VEREINIGTE SCHMIRGEL UND MASCHINEN FABRIKEN | Apr 19, 2022 | BREMER |
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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