Patent No. EP4189829 (titled "Avoiding Electromagnetic Interference (Emi) In Electrical Equipment And Drive Systems, E.G. Used In Radio Astronomy") was filed by MAX Planck Gesellschaft ZUR Frderung DER Wissenschaften EV on Jul 27, 2020. The application was issued on Aug 21, 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 |
|---|---|---|
| MTEX ANTENNA TECHNOLOGY | May 13, 2025 | MULLER |
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 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Oct 9, 2026
Sep 29, 2026
Sep 29, 2026
Sep 29, 2026
Jul 31, 2026
Jul 31, 2026
Jul 31, 2026
Jul 31, 2026
Jul 28, 2026
Jul 27, 2026
Jul 27, 2026
Jul 27, 2026
Jul 24, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Jul 23, 2026
Feb 27, 2026
Feb 27, 2026
Feb 27, 2026
Feb 27, 2026
Feb 27, 2026
Feb 19, 2026
Feb 19, 2026
Feb 18, 2026
Feb 18, 2026
Feb 18, 2026
Feb 18, 2026
Feb 18, 2026
Feb 17, 2026
Feb 12, 2026
Feb 12, 2026
Feb 12, 2026
Feb 4, 2026
Feb 4, 2026
Feb 4, 2026
Feb 4, 2026
Feb 4, 2026
Oct 7, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Oct 1, 2025
Jun 3, 2025
Jun 3, 2025
May 30, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 25, 2025
May 23, 2025
May 20, 2025
May 20, 2025
May 20, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 13, 2025
May 13, 2025
May 13, 2025
May 13, 2025
May 13, 2025
May 13, 2025
Sep 3, 2024
Jul 25, 2024
Jul 8, 2024
Jul 8, 2024
Jul 8, 2024
Jul 8, 2024
Jul 8, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Mar 19, 2024
Feb 23, 2024
Jun 30, 2023
Jun 30, 2023
Jun 30, 2023
May 10, 2023
Mar 9, 2023
Feb 22, 2023
Feb 22, 2023
Feb 22, 2023
Feb 6, 2023
Feb 6, 2023
Feb 2, 2023
Feb 2, 2023
Dec 9, 2022
Jul 13, 2022
Jul 13, 2022
Jul 13, 2022
Jul 13, 2022
Jul 13, 2022
Jun 2, 2022
May 31, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 24, 2022
May 19, 2022
May 13, 2022
May 13, 2022
May 13, 2022
May 13, 2022
Feb 3, 2022
Feb 3, 2022
Dec 4, 2021
Dec 3, 2021
Nov 25, 2021
Nov 25, 2021
Nov 25, 2021
Nov 25, 2021
Nov 25, 2021
Apr 22, 2021
Apr 22, 2021
Apr 22, 2021
Apr 22, 2021
Aug 7, 2020
Aug 6, 2020
Aug 3, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020