Patent No. EP3789588 (titled "Hydrostatic Seal Aligned With Rotor Rotation") was filed by Raytheon on Jul 3, 2020. The application was issued on Oct 19, 2022.

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 |
|---|---|---|
| SAFRAN AIRCRAFT ENGINES | Jul 18, 2023 | BREVALEX |
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
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Jun 26, 2025
Jun 17, 2025
Jun 17, 2025
Jun 17, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
May 7, 2025
Apr 2, 2025
Mar 25, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Feb 10, 2025
Feb 6, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 31, 2025
Jan 30, 2025
Jan 30, 2025
Jan 30, 2025
Nov 29, 2024
Nov 21, 2024
Nov 21, 2024
Nov 21, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
Sep 9, 2024
May 16, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
May 7, 2024
Dec 20, 2023
Dec 20, 2023
Dec 20, 2023
Dec 19, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Oct 4, 2023
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Aug 2, 2023
Aug 2, 2023
Jul 24, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Jul 18, 2023
Nov 2, 2022
Sep 22, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
Sep 9, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Apr 29, 2022
Feb 4, 2022
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
Mar 15, 2021
Feb 10, 2021
Jan 11, 2021
Jan 11, 2021
Jan 11, 2021
Jan 11, 2021
Dec 10, 2020
Sep 16, 2020
Sep 16, 2020
Jul 31, 2020
Jul 28, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020