Patent No. EP3328546 (titled "Improvements In Grinding Mills") was filed by Metso Finland on Jul 27, 2016. 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 |
|---|---|---|
| MINERAL PROCESS CONSULTING | Jan 8, 2025 | KELLER SCHNEIDER PATENT UND MARKENANWALTE |
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.
Date
Description
Get instant alerts for new documents
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Sep 19, 2025
Sep 12, 2025
Sep 12, 2025
Sep 12, 2025
Jun 2, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 26, 2025
May 9, 2025
May 7, 2025
May 7, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Jan 24, 2025
Jan 24, 2025
Jan 14, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Apr 23, 2024
Mar 14, 2024
Mar 5, 2024
Feb 29, 2024
Feb 29, 2024
Feb 29, 2024
Feb 29, 2024
Feb 29, 2024
Feb 29, 2024
Nov 3, 2023
Nov 3, 2023
Nov 3, 2023
Nov 3, 2023
Nov 3, 2023
Nov 3, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 15, 2023
Mar 15, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 3, 2023
Dec 12, 2022
Dec 12, 2022
Dec 2, 2022
Dec 2, 2022
Oct 13, 2022
Sep 26, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 16, 2022
Sep 16, 2022
Sep 16, 2022
Sep 16, 2022
Jul 7, 2022
Jul 7, 2022
May 5, 2022
May 5, 2022
Nov 9, 2021
Nov 9, 2021
Nov 19, 2020
Nov 19, 2020
Nov 19, 2020
May 14, 2020
May 14, 2020
May 14, 2020
May 6, 2020
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Sep 5, 2019
Aug 23, 2019
Aug 23, 2019
Aug 23, 2019
Aug 23, 2019
Aug 23, 2019
Feb 19, 2019
Feb 1, 2019
Feb 1, 2019
Feb 1, 2019
Feb 1, 2019
Feb 1, 2019
Jan 23, 2019
May 9, 2018
Mar 9, 2018
Mar 7, 2018
Mar 7, 2018
Mar 7, 2018
Feb 23, 2018
Feb 23, 2018
Feb 23, 2018
Feb 23, 2018
Feb 5, 2018
Feb 5, 2018
Dec 6, 2017
Aug 1, 2017
Apr 3, 2017
Mar 2, 2017
Feb 23, 2017
Feb 2, 2017
Feb 2, 2017