Patent No. EP3459890 (titled "Health Monitoring Of Safety Braking Systems For Elevators") was filed by Otis Elevator on Sep 20, 2017. The application was issued on Apr 3, 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.
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
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 23, 2026
Mar 19, 2026
Mar 3, 2026
Feb 23, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Jan 12, 2026
Jan 9, 2026
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 30, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Dec 22, 2025
Sep 23, 2025
Sep 23, 2025
Sep 23, 2025
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Aug 4, 2025
May 22, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
May 15, 2025
Jan 21, 2025
Jan 21, 2025
Jan 13, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Jan 3, 2025
Apr 16, 2024
Mar 7, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Feb 28, 2024
Oct 30, 2023
Oct 30, 2023
Oct 30, 2023
Oct 30, 2023
Oct 30, 2023
Oct 30, 2023
Mar 9, 2022
Mar 9, 2022
Mar 9, 2022
Mar 9, 2022
Mar 9, 2022
Nov 12, 2021
Nov 12, 2021
Aug 4, 2021
Feb 12, 2021
Dec 18, 2020
Dec 10, 2020
Dec 10, 2020
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
Apr 1, 2019
Feb 27, 2019
Dec 14, 2018
Nov 19, 2018
Feb 13, 2018
Feb 13, 2018
Feb 13, 2018
Feb 13, 2018
Feb 7, 2018
Jan 22, 2018
Nov 13, 2017
Oct 5, 2017
Sep 20, 2017
Sep 20, 2017
Sep 20, 2017
Sep 20, 2017
Sep 20, 2017
Sep 20, 2017
Sep 20, 2017