Patent No. EP4001330 (titled "Hydrogenated Petroleum Resin And Rubber Composition Comprising Same") was filed by Kolon Industries on Dec 17, 2020. The application was issued on Oct 9, 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 |
|---|---|---|
| RAIN CARBON GERMANY | Jul 9, 2025 | COHAUSZ & FLORACK |
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
Oct 7, 2026
Oct 5, 2026
Oct 5, 2026
Oct 5, 2026
Oct 5, 2026
Oct 5, 2026
Sep 30, 2026
Sep 30, 2026
Sep 29, 2026
Sep 29, 2026
Sep 29, 2026
Sep 29, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 25, 2026
Sep 24, 2026
Sep 24, 2026
Sep 24, 2026
Sep 10, 2026
Sep 9, 2026
Sep 9, 2026
Sep 9, 2026
Sep 2, 2026
Jun 1, 2026
Jun 1, 2026
Jun 1, 2026
Jun 1, 2026
Jun 1, 2026
Jun 1, 2026
Mar 4, 2026
Mar 4, 2026
Mar 3, 2026
Mar 3, 2026
Mar 3, 2026
Mar 3, 2026
Mar 3, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Feb 26, 2026
Dec 19, 2025
Dec 19, 2025
Dec 16, 2025
Dec 15, 2025
Dec 15, 2025
Dec 15, 2025
Sep 12, 2025
Sep 12, 2025
Sep 10, 2025
Sep 4, 2025
Sep 4, 2025
Sep 4, 2025
Sep 4, 2025
Jul 11, 2025
Jul 11, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Jul 9, 2025
Oct 22, 2024
Sep 12, 2024
Aug 26, 2024
Aug 26, 2024
Aug 26, 2024
Aug 26, 2024
May 16, 2024
May 16, 2024
May 16, 2024
May 16, 2024
May 16, 2024
May 16, 2024
Apr 24, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jul 27, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Jun 28, 2023
Jul 5, 2022
Jul 5, 2022
Apr 28, 2022
Mar 4, 2022
Mar 1, 2022
Feb 16, 2022
Feb 16, 2022
Feb 16, 2022
Feb 16, 2022
Feb 16, 2022
Jul 12, 2021
Jun 24, 2021
Jun 24, 2021
Jun 24, 2021