The weekly litigation news digest is live. Subscribe now
Patent No. EP4186246 (titled "Hearing Device") was filed by Sonion Nederland on May 27, 2021. The application was issued on Jul 24, 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 |
|---|---|---|
| KS HIMPP | Apr 24, 2025 | MEISSNER BOLTE PARTNERSCHAFT MBB |
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
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 10, 2025
Dec 2, 2025
Nov 25, 2025
Nov 20, 2025
Nov 20, 2025
Nov 20, 2025
Oct 2, 2025
Oct 2, 2025
Sep 30, 2025
Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Sep 18, 2025
Sep 17, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 11, 2025
Sep 10, 2025
Sep 10, 2025
Sep 10, 2025
Sep 10, 2025
May 12, 2025
May 12, 2025
Apr 29, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Apr 24, 2025
Aug 6, 2024
Jun 27, 2024
Jun 19, 2024
Jun 19, 2024
Jun 19, 2024
Jun 19, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 5, 2024
May 4, 2023
Mar 7, 2023
Feb 28, 2023
Jan 30, 2023
Jan 30, 2023
Jan 26, 2023
Jan 26, 2023
Dec 2, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Oct 10, 2022
Sep 12, 2022
Sep 12, 2022
Sep 12, 2022
Sep 12, 2022
Sep 12, 2022
Jul 11, 2022
Jul 11, 2022
Jul 11, 2022
Jun 28, 2022
Jun 14, 2022
May 31, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
Apr 5, 2022
Mar 15, 2022
Mar 15, 2022
Mar 4, 2022
Mar 4, 2022
Feb 14, 2022
Jan 27, 2022
Jan 27, 2022
Aug 3, 2021
Jun 30, 2021
Jun 30, 2021
Jun 30, 2021
Jun 30, 2021
Jun 15, 2021
Jun 8, 2021
Jun 8, 2021
Jun 8, 2021
Jun 8, 2021
Jun 8, 2021
Jun 8, 2021