Patent No. EP3728287 (titled "Protein Purification And Virus Inactivation With Alkyl Glycosides") was filed by CSL Behring Lengnau on Dec 19, 2018. The application was issued on Apr 10, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| MARGARET DIXON | Jan 9, 2025 | MEWBURN ELLIS |
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
Dec 23, 2025
Dec 23, 2025
Dec 23, 2025
Dec 23, 2025
Dec 23, 2025
Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Dec 4, 2025
Dec 3, 2025
Dec 3, 2025
Dec 3, 2025
Dec 3, 2025
Nov 25, 2025
Nov 25, 2025
Nov 25, 2025
Nov 25, 2025
Nov 25, 2025
May 28, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 22, 2025
May 2, 2025
May 2, 2025
Feb 18, 2025
Feb 18, 2025
Feb 18, 2025
Feb 14, 2025
Feb 12, 2025
Feb 12, 2025
Feb 12, 2025
Jan 22, 2025
Jan 22, 2025
Jan 15, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Jan 9, 2025
Apr 23, 2024
Mar 14, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Feb 27, 2024
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 23, 2023
Oct 10, 2023
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 21, 2022
Jun 3, 2022
May 31, 2022
May 31, 2022
Apr 11, 2022
Apr 11, 2022
Mar 30, 2022
Dec 1, 2021
Feb 22, 2021
Feb 16, 2021
Feb 16, 2021
Feb 16, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Feb 1, 2021
Sep 30, 2020
Jul 29, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 27, 2020
Jul 22, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
May 4, 2020
Jul 18, 2019
Jun 27, 2019
Jun 27, 2019
Mar 27, 2019
Mar 27, 2019
Jan 11, 2019
Jan 10, 2019
Jan 7, 2019
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018
Dec 19, 2018