Patent No. EP3994188 (titled "Long Chain Branched Propylene Polymer Composition") was filed by Borealis on Jun 19, 2020. The application was issued on Nov 8, 2023.

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 |
|---|---|---|
| CABINET DIDIER MARTIN CDM | Aug 7, 2024 | CABINET DIDIER MARTIN |
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
Mar 16, 2026
Mar 16, 2026
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 4, 2025
Nov 20, 2025
Oct 23, 2025
Oct 23, 2025
Oct 23, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Sep 29, 2025
Sep 29, 2025
Sep 29, 2025
Sep 23, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 18, 2025
Sep 15, 2025
Sep 9, 2025
Sep 9, 2025
Sep 9, 2025
Jun 30, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Jun 24, 2025
Mar 5, 2025
Mar 5, 2025
Mar 5, 2025
Mar 5, 2025
Mar 5, 2025
Dec 23, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Dec 18, 2024
Aug 23, 2024
Aug 23, 2024
Aug 13, 2024
Aug 7, 2024
Aug 7, 2024
Aug 7, 2024
Aug 7, 2024
Aug 7, 2024
Aug 7, 2024
Nov 21, 2023
Oct 12, 2023
Oct 2, 2023
Oct 2, 2023
Oct 2, 2023
Oct 2, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Jan 27, 2023
Oct 13, 2022
Apr 13, 2022
Mar 31, 2022
Mar 28, 2022
Mar 28, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Feb 11, 2022
Feb 4, 2022
Jan 31, 2022
Jan 31, 2022
Jan 10, 2022
Jan 10, 2022
Nov 12, 2021
Jul 1, 2021
Jul 1, 2021
Jul 1, 2021
Jul 1, 2021
Jul 1, 2021
Jun 3, 2021
May 22, 2021
Apr 26, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Apr 20, 2021
Jan 25, 2021
Jan 7, 2021
Jan 7, 2021
Sep 2, 2020
Sep 2, 2020
Sep 2, 2020
Sep 2, 2020
Jul 3, 2020
Jul 2, 2020
Jun 29, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020