Patent No. EP2598579 (titled "Spherical Amorphous Calcium Carbonate Particles") was filed by Schaefer Kalk on Jul 28, 2011. The application was issued on Sep 11, 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 |
|---|---|---|
| AMORPHICAL | Jun 11, 2025 | JACOBI |
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
Jan 9, 2026
Jan 5, 2026
Jan 5, 2026
Jan 5, 2026
Jan 5, 2026
Jan 5, 2026
Jan 5, 2026
Jan 5, 2026
Dec 19, 2025
Dec 19, 2025
Dec 18, 2025
Dec 16, 2025
Dec 16, 2025
Dec 16, 2025
Oct 20, 2025
Oct 20, 2025
Oct 15, 2025
Oct 15, 2025
Oct 15, 2025
Jul 4, 2025
Jul 4, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 30, 2025
Jun 18, 2025
Jun 16, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Jun 11, 2025
Sep 24, 2024
Aug 16, 2024
Jul 19, 2024
Jul 19, 2024
Jul 12, 2024
Jul 12, 2024
Jul 12, 2024
Jul 12, 2024
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Dec 7, 2023
Dec 7, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 19, 2023
Mar 31, 2023
Mar 28, 2023
Mar 17, 2023
Mar 17, 2023
Mar 17, 2023
Jan 18, 2023
Jan 13, 2023
Dec 20, 2022
Dec 20, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Nov 29, 2022
Sep 27, 2022
Sep 27, 2022
Sep 27, 2022
Jul 19, 2022
Jul 19, 2022
Jul 19, 2022
Jul 14, 2022
Jun 29, 2022
Jun 24, 2022
Jun 15, 2022
Jun 15, 2022
Jun 15, 2022
Jun 15, 2022
Jun 9, 2022
Apr 26, 2022
Apr 26, 2022
Apr 26, 2022
Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Dec 22, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Dec 14, 2021
Nov 5, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Oct 22, 2021
Dec 10, 2020
Dec 4, 2020
Dec 4, 2020
Dec 4, 2020
Sep 1, 2020
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Aug 16, 2019
Jun 19, 2019
Jun 17, 2019
Jun 13, 2019
Feb 7, 2019
Feb 7, 2019
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018
Jul 20, 2018
Jul 20, 2018
Jul 20, 2018
Jul 20, 2018
Mar 19, 2018
Mar 19, 2018
Mar 9, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 7, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Feb 5, 2018
Nov 24, 2017
Jul 26, 2017
Jul 17, 2017
Jul 14, 2017
Jul 13, 2017
Jul 13, 2017
Jul 13, 2017
Jul 13, 2017
Apr 4, 2017
Apr 3, 2017
Mar 17, 2017
Jan 24, 2017
Jan 20, 2017
Jan 19, 2017
Dec 20, 2016
Dec 20, 2016
Dec 16, 2016
Dec 16, 2016
Oct 21, 2016
Oct 19, 2016
Oct 17, 2016
Jun 7, 2016
Jun 7, 2016
May 31, 2016
Apr 22, 2016
Nov 4, 2015
Oct 28, 2015
Apr 24, 2015
Apr 23, 2014
Jan 20, 2014
Sep 17, 2013
Sep 7, 2013
Sep 7, 2013
Sep 6, 2013
Sep 6, 2013
May 8, 2013
Mar 7, 2013
Mar 5, 2013
Mar 5, 2013
Feb 28, 2013
Feb 18, 2013
Jan 26, 2013
Dec 7, 2012
Apr 12, 2012
Apr 12, 2012
Apr 12, 2012
Feb 22, 2012
Feb 16, 2012
Feb 16, 2012
Feb 2, 2012
Jan 17, 2012
Jan 17, 2012
Jan 17, 2012
Dec 16, 2011
Dec 16, 2011
Aug 1, 2011
Aug 1, 2011
Aug 1, 2011
Aug 1, 2011
Aug 1, 2011