Patent No. EP3536975 (titled "System And Methodology To Facilitate Pumping Of Fluid") was filed by Onesubsea UK on Mar 4, 2019. The application was issued on Apr 28, 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 |
|---|---|---|
| SULZER MANAGEMENT | Jan 26, 2022 | IPS IRSCH |
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
Nov 17, 2025
Nov 13, 2025
Nov 13, 2025
Nov 13, 2025
Nov 13, 2025
Nov 10, 2025
Nov 10, 2025
Nov 10, 2025
Nov 10, 2025
Oct 28, 2025
Oct 28, 2025
Apr 9, 2025
Apr 4, 2025
Apr 4, 2025
Apr 4, 2025
Mar 24, 2025
Mar 24, 2025
Mar 24, 2025
Mar 24, 2025
Mar 19, 2025
Nov 7, 2024
May 10, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
May 3, 2024
Jan 3, 2024
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Dec 21, 2023
Oct 23, 2023
Oct 23, 2023
Oct 16, 2023
Oct 16, 2023
Oct 16, 2023
Sep 7, 2023
Sep 7, 2023
Aug 22, 2023
Aug 22, 2023
Aug 22, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Aug 18, 2023
Jun 14, 2023
Jun 8, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Jun 7, 2023
Apr 21, 2023
Apr 21, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Apr 14, 2023
Feb 3, 2023
Feb 3, 2023
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 27, 2022
Oct 26, 2022
Oct 26, 2022
Oct 26, 2022
Oct 25, 2022
Oct 25, 2022
Oct 25, 2022
Oct 25, 2022
Oct 25, 2022
Oct 25, 2022
Oct 25, 2022
Jul 7, 2022
Jun 30, 2022
Jun 30, 2022
Jun 30, 2022
Feb 15, 2022
Feb 15, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 4, 2022
Feb 4, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
Jan 26, 2022
May 12, 2021
Apr 1, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Mar 22, 2021
Dec 2, 2020
Dec 2, 2020
Dec 2, 2020
Dec 2, 2020
Dec 2, 2020
Nov 16, 2020
Mar 11, 2020
Mar 11, 2020
Mar 11, 2020
Mar 11, 2020
Mar 11, 2020
Mar 11, 2020
Mar 11, 2020
Sep 16, 2019
Aug 14, 2019
Jul 23, 2019
Jul 23, 2019
Jul 23, 2019
Jul 23, 2019
Jul 23, 2019
Jul 15, 2019
May 14, 2019
May 6, 2019
Apr 26, 2019
Mar 22, 2019
Mar 13, 2019
Mar 13, 2019
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019
Mar 4, 2019