Patent No. EP3493340 (titled "Ignition Plug With Extended Housing And Grounding Electrode On The Inside Of The Housing") was filed by Robert Bosch on Nov 7, 2018. The application was issued on Jan 20, 2021.

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 |
|---|---|---|
| ZEITLER VOLPERT KANDLBINDER | Oct 20, 2021 | ZEITLER VOLPERT KANDLBINDER PATENTANWALTE 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 23, 2025
Dec 23, 2025
Dec 23, 2025
Dec 22, 2025
Dec 19, 2025
Dec 19, 2025
Dec 19, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Jan 28, 2025
Jan 28, 2025
Jan 28, 2025
Dec 3, 2024
Dec 3, 2024
Nov 28, 2024
Nov 28, 2024
Sep 13, 2024
Sep 11, 2024
Sep 11, 2024
Sep 11, 2024
Jun 25, 2024
Jun 12, 2024
Jun 12, 2024
Feb 28, 2024
Oct 23, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Oct 17, 2023
Jun 19, 2023
Jun 15, 2023
Jun 12, 2023
Jun 12, 2023
Jun 12, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Apr 6, 2023
Apr 6, 2023
Mar 31, 2023
Mar 31, 2023
Mar 31, 2023
Feb 8, 2023
Feb 8, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Feb 2, 2023
Nov 22, 2022
Nov 17, 2022
Nov 17, 2022
Nov 14, 2022
Nov 14, 2022
Sep 26, 2022
Sep 26, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
Sep 21, 2022
May 6, 2022
May 4, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Mar 18, 2022
Mar 11, 2022
Mar 11, 2022
Mar 11, 2022
Mar 11, 2022
Mar 11, 2022
Mar 11, 2022
Nov 4, 2021
Nov 4, 2021
Oct 28, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Feb 1, 2021
Jan 11, 2021
Dec 4, 2020
Dec 4, 2020
Dec 4, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Sep 3, 2020
Mar 25, 2020
Mar 20, 2020
Jan 9, 2020
Jan 9, 2020
Dec 17, 2019
Nov 20, 2019
Nov 20, 2019
Nov 20, 2019
Nov 20, 2019
Nov 20, 2019
Jun 11, 2019
May 8, 2019
Mar 28, 2019
Mar 28, 2019
Mar 28, 2019
Mar 28, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Dec 11, 2018
Dec 11, 2018
Nov 7, 2018
Nov 7, 2018
Nov 7, 2018
Nov 7, 2018
Nov 7, 2018
Nov 7, 2018
Nov 7, 2018