Patent No. EP3231595 (titled "Composite And Method For Producing A Composite For An Acoustic Component") was filed by Sefar on Apr 14, 2016. The application was issued on Sep 28, 2022.

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 |
|---|---|---|
| SAATI | Jun 22, 2023 | WEIDNER STERN JESCHKE |
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 8, 2026
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Dec 29, 2025
Sep 1, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Aug 29, 2025
Jul 1, 2025
Jul 1, 2025
Jun 25, 2025
Jun 25, 2025
Jun 25, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 29, 2025
Apr 25, 2025
Apr 22, 2025
Apr 22, 2025
Mar 12, 2025
Mar 3, 2025
Feb 25, 2025
Feb 25, 2025
Feb 25, 2025
Feb 25, 2025
Jan 28, 2025
Jan 21, 2025
Jan 21, 2025
Jan 21, 2025
Jan 16, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Oct 18, 2024
Oct 10, 2024
Oct 10, 2024
Oct 10, 2024
Sep 30, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Feb 21, 2024
Nov 15, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Jul 12, 2023
Jul 12, 2023
Jun 27, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Jun 22, 2023
Oct 11, 2022
Sep 1, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
Aug 18, 2022
May 16, 2022
May 16, 2022
May 16, 2022
May 16, 2022
May 16, 2022
Jan 18, 2022
Jan 18, 2022
Jan 18, 2022
Jan 18, 2022
Jan 18, 2022
Nov 26, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Jul 23, 2021
Jul 23, 2021
Apr 13, 2021
Apr 13, 2021
Apr 13, 2021
Apr 13, 2021
Apr 13, 2021
Feb 8, 2021
Feb 8, 2021
Nov 9, 2020
Nov 9, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Nov 4, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Oct 30, 2020
Sep 3, 2020
Sep 3, 2020
Sep 3, 2020
Sep 3, 2020
Sep 3, 2020
Sep 3, 2020
Sep 3, 2020
May 4, 2020
May 4, 2020
Feb 14, 2018
Feb 8, 2018
Jan 24, 2018
Jan 17, 2018
Oct 23, 2017
Oct 20, 2017
Oct 20, 2017
Oct 20, 2017
Sep 20, 2017
May 18, 2017
May 18, 2017
May 18, 2017
May 18, 2017
May 18, 2017
May 18, 2017
Apr 10, 2017
Apr 10, 2017
Apr 10, 2017
Apr 6, 2017
Apr 6, 2017
Mar 24, 2017
Dec 7, 2016
Dec 7, 2016
Dec 7, 2016
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Dec 6, 2016
Oct 24, 2016
Oct 24, 2016
Oct 24, 2016
Oct 24, 2016
Oct 6, 2016
Jul 4, 2016
Jul 4, 2016
Jul 4, 2016
Jun 3, 2016
Jun 3, 2016
Jun 3, 2016
Jun 3, 2016
Jun 3, 2016
May 25, 2016
Apr 14, 2016
Apr 14, 2016
Apr 14, 2016
Apr 14, 2016
Apr 14, 2016
Apr 14, 2016