Patent No. EP3728440 (titled "Polymer Composition Comprising A Polyethylene") was filed by Borealis on Dec 18, 2018. The application was issued on May 7, 2025.

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 |
|---|---|---|
| BASELL POLYOLEFINE | May 17, 2023 | LYONDELLBASELL |
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
Apr 10, 2025
Apr 10, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Feb 10, 2025
Feb 10, 2025
Feb 10, 2025
Feb 4, 2025
Jan 20, 2025
Jan 13, 2025
Jan 13, 2025
Jan 13, 2025
Dec 23, 2024
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Dec 3, 2024
Dec 3, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Sep 17, 2024
Sep 13, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 10, 2024
Sep 6, 2024
Sep 5, 2024
Sep 3, 2024
Sep 3, 2024
Sep 3, 2024
Sep 2, 2024
Sep 2, 2024
Sep 2, 2024
Jul 22, 2024
Jul 19, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 16, 2024
Jul 16, 2024
Jul 16, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Oct 17, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Oct 11, 2023
Jun 2, 2023
Jun 2, 2023
May 23, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
May 17, 2023
Aug 30, 2022
Jul 21, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
May 9, 2022
Feb 4, 2022
Jan 31, 2022
Jan 31, 2022
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
Jan 18, 2021
Sep 30, 2020
Jul 28, 2020
Jul 24, 2020
Jul 24, 2020
Jul 24, 2020
Jul 24, 2020
Jul 21, 2020
Jul 6, 2020
Jul 2, 2020
Jul 2, 2020
Jul 2, 2020
May 4, 2020
Jul 18, 2019
Jun 27, 2019
Jun 27, 2019
Jan 31, 2019
Jan 31, 2019
Jan 31, 2019
Jan 3, 2019
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018