Patent No. EP3200602 (titled "Process For Producing A Pufa-Containing Biomass Which Has High Cell Stability") was filed by Evonik Degussa on Sep 22, 2015. The application was issued on Mar 10, 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 |
|---|---|---|
| ABEL & IMRAY | Dec 9, 2021 | HART |
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 29, 2026
Jan 29, 2026
Jan 29, 2026
Jan 19, 2026
Jan 19, 2026
Jan 19, 2026
Dec 17, 2025
Dec 12, 2025
Dec 12, 2025
Dec 12, 2025
Dec 11, 2025
Dec 11, 2025
Nov 10, 2025
Nov 10, 2025
Aug 12, 2025
Aug 7, 2025
Aug 7, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 7, 2025
Jun 30, 2025
Aug 27, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Apr 25, 2024
Apr 22, 2024
Apr 22, 2024
Apr 22, 2024
Apr 22, 2024
Feb 14, 2024
Feb 14, 2024
Feb 7, 2024
Feb 7, 2024
Feb 7, 2024
Jan 2, 2024
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 18, 2023
Nov 21, 2023
Sep 28, 2023
Sep 26, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 20, 2023
Sep 19, 2023
Sep 19, 2023
Sep 19, 2023
Sep 19, 2023
Sep 19, 2023
Sep 19, 2023
Sep 19, 2023
Aug 16, 2023
Aug 16, 2023
Aug 16, 2023
Aug 9, 2023
Aug 9, 2023
Aug 9, 2023
Feb 28, 2023
Feb 24, 2023
Feb 24, 2023
Feb 24, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
Feb 21, 2023
May 12, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
May 9, 2022
Jan 4, 2022
Jan 4, 2022
Dec 15, 2021
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Mar 22, 2021
Feb 11, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Oct 2, 2020
Oct 2, 2020
Oct 2, 2020
Aug 31, 2020
Aug 31, 2020
Aug 31, 2020
Aug 25, 2020
Aug 25, 2020
Aug 25, 2020
Aug 25, 2020
Aug 25, 2020
Aug 25, 2020
Aug 25, 2020
Nov 12, 2019
Nov 6, 2019
Nov 6, 2019
Aug 22, 2019
Aug 22, 2019
Aug 22, 2019
Aug 22, 2019
Aug 22, 2019
Aug 22, 2019
Jun 17, 2019
Jun 12, 2019
Jun 12, 2019
Jun 12, 2019
Apr 23, 2019
Apr 10, 2019
Apr 10, 2019
Apr 10, 2019
Apr 10, 2019
Feb 19, 2019
Feb 19, 2019
Feb 8, 2019
Nov 13, 2017
Nov 13, 2017
Nov 13, 2017
Nov 13, 2017
Nov 13, 2017
Aug 8, 2017
Jul 31, 2017
Jul 12, 2017
Jun 12, 2017
Jun 6, 2017
May 10, 2017
May 8, 2017
May 8, 2017
May 8, 2017
May 8, 2017
May 2, 2017
Apr 18, 2017
Mar 29, 2017
Mar 29, 2017
Feb 10, 2017
Dec 15, 2016
Dec 15, 2016
Dec 15, 2016
Apr 28, 2016
Apr 7, 2016
Apr 7, 2016
Apr 7, 2016
Dec 1, 2015
Dec 1, 2015
Nov 30, 2015
Nov 30, 2015
Nov 30, 2015
Oct 1, 2015
Sep 29, 2015
Sep 26, 2015
Sep 25, 2015
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015