Patent No. EP3357911 (titled "Prolyl Hydroxylase Inhibitors And Methods Of Use") was filed by Akebia Therapeutics on Jun 26, 2007. The application was issued on May 11, 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 |
|---|---|---|
| FIBROGEN | Feb 13, 2023 | CARPMAELS & RANSFORD |
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
Apr 22, 2024
Jan 18, 2024
Jan 18, 2024
Jan 18, 2024
Jan 18, 2024
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Dec 12, 2023
Nov 30, 2023
Nov 30, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 22, 2023
Nov 22, 2023
Nov 22, 2023
Aug 3, 2023
Aug 3, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
Jul 28, 2023
May 31, 2023
May 31, 2023
May 23, 2023
May 23, 2023
May 23, 2023
May 23, 2023
May 23, 2023
May 23, 2023
Mar 30, 2023
Mar 30, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 22, 2023
Mar 2, 2023
Mar 2, 2023
Mar 2, 2023
Feb 27, 2023
Feb 24, 2023
Feb 24, 2023
Feb 23, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 20, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
Feb 13, 2023
May 24, 2022
Apr 14, 2022
Mar 31, 2022
Mar 31, 2022
Mar 31, 2022
Mar 31, 2022
Dec 1, 2021
Dec 1, 2021
Dec 1, 2021
Dec 1, 2021
Dec 1, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Jul 13, 2021
Mar 22, 2021
Mar 15, 2021
Mar 15, 2021
Jan 14, 2021
Jan 14, 2021
Sep 1, 2020
Aug 21, 2020
Aug 21, 2020
Aug 21, 2020
Aug 21, 2020
Aug 21, 2020
Jun 24, 2020
Feb 4, 2020
Jan 28, 2020
Jan 28, 2020
Oct 1, 2019
Oct 1, 2019
Sep 25, 2019
Aug 19, 2019
Aug 19, 2019
Aug 8, 2019
Aug 8, 2019
Aug 8, 2019
Aug 8, 2019
May 22, 2019
May 8, 2019
May 8, 2019
May 8, 2019
May 8, 2019
May 8, 2019
Feb 28, 2019
Aug 13, 2018
Jul 18, 2018
Jul 11, 2018
Jul 10, 2018
Jul 10, 2018
Jul 10, 2018
Jul 10, 2018
Jun 15, 2018
May 29, 2018
May 29, 2018
Apr 23, 2018
Apr 23, 2018
Apr 23, 2018
Apr 23, 2018
Apr 23, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Jan 22, 2008