Patent No. EP3351936 (titled "A Cell Mediated Immune Response Assay With Enhanced Sensitivity") was filed by Cellestis on Jun 27, 2012. The application was issued on Jan 8, 2025.

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 |
|---|---|---|
| BIOMERIEUX SOCIETE ANONYME | Oct 7, 2025 | BIRD & BIRD |
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 6, 2025
Nov 6, 2025
Nov 6, 2025
Oct 22, 2025
Oct 22, 2025
Oct 22, 2025
Oct 22, 2025
Oct 22, 2025
Oct 13, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Oct 7, 2025
Jan 21, 2025
Dec 12, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Nov 29, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
Aug 2, 2024
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 22, 2023
Sep 18, 2023
Aug 29, 2023
Aug 29, 2023
Aug 29, 2023
Aug 29, 2023
Aug 29, 2023
Jun 27, 2023
Jun 22, 2023
Jun 22, 2023
Mar 15, 2023
Mar 15, 2023
May 25, 2022
May 19, 2022
May 19, 2022
May 19, 2022
May 19, 2022
May 19, 2022
May 19, 2022
May 19, 2022
Mar 31, 2022
Mar 31, 2022
Mar 31, 2022
Mar 31, 2022
Mar 31, 2022
Feb 8, 2022
Feb 2, 2022
Feb 2, 2022
Dec 6, 2021
Dec 1, 2021
Dec 1, 2021
Sep 23, 2021
Sep 23, 2021
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Oct 5, 2020
Aug 13, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jan 27, 2020
Jan 27, 2020
Jan 21, 2020
Jun 5, 2019
May 22, 2019
May 22, 2019
May 22, 2019
May 22, 2019
May 22, 2019
Mar 13, 2019
Jan 25, 2019
Jan 25, 2019
Jan 25, 2019
Jul 30, 2018
Jun 27, 2018
Apr 23, 2018
Apr 18, 2018
Apr 12, 2018
Apr 12, 2018
Apr 12, 2018
Apr 12, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Jan 22, 2013