Patent No. EP3621808 (titled "Barrier Film With Enhanced Formability And A Method For Making Thereof") was filed by Obschestvo S Ogranichennoi Otvetstvennostyu Proizvodstvenno Kommercheskaya Firma Atlantis PAK on Aug 28, 2018. The application was issued on Jun 7, 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 |
|---|---|---|
| ISARPATENT PATENT UND RECHTSANWALTE BARTH HASSA PECKMANN UND PARTNER MBB | Mar 7, 2024 | ISARPATENT |
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 21, 2026
Jan 21, 2026
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Sep 22, 2025
Sep 17, 2025
Sep 16, 2025
Sep 16, 2025
Sep 16, 2025
Jul 24, 2025
Jul 24, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Jul 22, 2025
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Aug 6, 2024
Jul 30, 2024
Jul 25, 2024
Jul 25, 2024
Jul 22, 2024
Jul 22, 2024
Jul 22, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 17, 2024
Jul 4, 2024
Jul 1, 2024
Jul 1, 2024
Jul 1, 2024
Mar 22, 2024
Mar 22, 2024
Mar 14, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Jun 20, 2023
May 11, 2023
Apr 17, 2023
Jan 20, 2023
Jan 20, 2023
Jan 17, 2023
Jan 17, 2023
Jan 17, 2023
Jan 4, 2023
Jan 4, 2023
Jan 4, 2023
Jan 4, 2023
Jan 4, 2023
Jan 4, 2023
Jan 4, 2023
Aug 30, 2022
Aug 30, 2022
Aug 30, 2022
Aug 30, 2022
Aug 30, 2022
Jul 26, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Jul 20, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Mar 14, 2022
Feb 21, 2022
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Dec 9, 2020
Jul 7, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 19, 2020
Jun 4, 2020
Apr 14, 2020
Feb 19, 2020
Feb 18, 2020
Feb 5, 2020
Jan 28, 2020
Jan 28, 2020
Jan 28, 2020
Jan 28, 2020
Jan 28, 2020
Jan 27, 2020
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Dec 12, 2019
Apr 29, 2019
Apr 4, 2019
Apr 4, 2019