Patent No. EP3658141 (titled "Treating Pathological Conditions By Direct And Indirect Targeting Of Sirpa - Cd47 Interaction") was filed by Academisch Ziekenhuis Leiden Hodn Lumc on Jul 24, 2018. The application was issued on Nov 16, 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 |
|---|---|---|
| STRAWMAN | Aug 11, 2023 | HOFFMANN EITLE |
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
Feb 19, 2026
Feb 19, 2026
Feb 16, 2026
Feb 16, 2026
Feb 16, 2026
Oct 29, 2025
Oct 29, 2025
Oct 24, 2025
Oct 23, 2025
Jul 28, 2025
Jul 25, 2025
Jul 25, 2025
Jul 25, 2025
Mar 28, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Mar 26, 2025
Feb 18, 2025
Feb 12, 2025
Feb 12, 2025
Feb 12, 2025
Jan 30, 2025
Jan 30, 2025
Jan 24, 2025
Jan 24, 2025
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 6, 2024
Nov 5, 2024
Nov 1, 2024
Nov 1, 2024
Nov 1, 2024
Sep 11, 2024
Sep 11, 2024
Sep 11, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 8, 2024
Mar 8, 2024
Mar 8, 2024
Jan 30, 2024
Jan 30, 2024
Jan 30, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 25, 2024
Jan 15, 2024
Jan 12, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Jan 8, 2024
Aug 28, 2023
Aug 28, 2023
Aug 17, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Aug 11, 2023
Apr 14, 2023
Apr 7, 2023
Apr 7, 2023
Apr 7, 2023
Apr 7, 2023
Apr 7, 2023
Apr 7, 2023
Mar 23, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Feb 23, 2023
Nov 30, 2022
Nov 29, 2022
Nov 15, 2022
Nov 15, 2022
Nov 15, 2022
Nov 15, 2022
Oct 20, 2022
Oct 11, 2022
Oct 11, 2022
Oct 11, 2022
Oct 11, 2022
Oct 11, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 27, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Feb 4, 2022
Feb 4, 2022
Feb 4, 2022
Feb 4, 2022
Feb 4, 2022
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Dec 10, 2021
Aug 3, 2021
Aug 3, 2021
Jun 9, 2021
Jun 9, 2021
Jun 9, 2021
Jun 9, 2021
Jun 9, 2021
Jun 9, 2021
Jun 9, 2021
Mar 17, 2021
Mar 17, 2021
Mar 17, 2021
Mar 17, 2021
Mar 2, 2021
Mar 2, 2021
Mar 2, 2021
Feb 25, 2021
Feb 24, 2021
Feb 24, 2021
Feb 24, 2021
Nov 26, 2020
Nov 26, 2020
Nov 26, 2020
Nov 26, 2020
Oct 30, 2020
Sep 29, 2020
Sep 23, 2020
Sep 23, 2020
Sep 23, 2020
May 7, 2020
May 7, 2020
May 7, 2020
May 7, 2020
May 7, 2020
Apr 24, 2020
Apr 17, 2020
Apr 17, 2020
Apr 17, 2020
Mar 25, 2020
Mar 19, 2020
Mar 13, 2020
Mar 6, 2020
Mar 5, 2020
Feb 28, 2020
Feb 28, 2020
Feb 28, 2020
Feb 28, 2020
Feb 28, 2020
Feb 28, 2020
Feb 11, 2020
Jan 22, 2020
Jan 22, 2020
Dec 6, 2019
Feb 27, 2019
Feb 27, 2019
Feb 22, 2019
Feb 22, 2019
Feb 8, 2019
Feb 8, 2019
Jan 31, 2019
Jan 31, 2019
Nov 19, 2018
Nov 16, 2018
Nov 16, 2018
Nov 16, 2018
Oct 19, 2018
Oct 19, 2018
Oct 19, 2018
Oct 4, 2018
Oct 4, 2018
Oct 2, 2018
Sep 18, 2018
Sep 18, 2018
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018
Jul 24, 2018