Patent No. EP3318226 (titled "Clean Venturi Aspiration") was filed by This on Nov 3, 2016. The application was issued on Jan 6, 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 |
|---|---|---|
| CARL ZEISS | Oct 6, 2021 | PATERIS PATENTANWALTE PARTMBB |
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 27, 2026
Jan 26, 2026
Jan 26, 2026
Jan 26, 2026
Dec 9, 2025
Dec 3, 2025
Dec 3, 2025
Dec 3, 2025
Oct 28, 2025
Oct 28, 2025
Oct 28, 2025
Oct 23, 2025
Sep 30, 2025
Mar 13, 2025
Mar 13, 2025
Mar 11, 2025
Mar 11, 2025
Feb 27, 2025
Jan 7, 2025
Jan 7, 2025
Nov 22, 2024
Sep 20, 2024
Aug 8, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
Mar 4, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Oct 20, 2023
Oct 12, 2023
Oct 12, 2023
Oct 12, 2023
Aug 21, 2023
Aug 21, 2023
Aug 14, 2023
Aug 14, 2023
Aug 14, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Jun 2, 2023
Mar 22, 2023
Mar 21, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 20, 2023
Mar 15, 2023
Mar 14, 2023
Mar 14, 2023
Mar 14, 2023
Jan 25, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 19, 2023
Jan 13, 2023
Jan 10, 2023
Jan 10, 2023
Jan 10, 2023
Nov 29, 2022
Nov 29, 2022
Nov 28, 2022
Nov 23, 2022
Nov 23, 2022
Nov 23, 2022
Nov 23, 2022
Nov 23, 2022
May 31, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
Mar 2, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Oct 18, 2021
Oct 18, 2021
Oct 12, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Oct 6, 2021
Jan 20, 2021
Dec 10, 2020
Nov 27, 2020
Nov 27, 2020
Nov 27, 2020
Nov 27, 2020
Nov 27, 2020
Jul 30, 2020
Jul 30, 2020
Jul 30, 2020
Jul 30, 2020
Jul 30, 2020
Mar 2, 2020
Mar 2, 2020
Mar 2, 2020
Mar 2, 2020
Mar 2, 2020
Feb 26, 2020
Feb 26, 2020
Feb 26, 2020
Feb 26, 2020
Feb 26, 2020
Oct 17, 2019
Oct 17, 2019
Oct 7, 2019
Nov 14, 2018
Nov 14, 2018
Nov 14, 2018
Nov 9, 2018
Nov 9, 2018
Nov 9, 2018
May 15, 2018
Apr 11, 2018
Oct 17, 2017
Oct 11, 2017
May 15, 2017
May 15, 2017
May 15, 2017
May 15, 2017
Apr 25, 2017
Jan 3, 2017
Dec 16, 2016
Dec 8, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016
Nov 3, 2016