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The patent EP3357911 was granted to Akebia Therapeutics on May 11, 2022. The application was filed on Jun 26, 2007 under application number EP18158907A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 | Opposition Status |
|---|---|---|---|
| FIBROGEN | Feb 13, 2023 | CARPMAELS & RANSFORD | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP0650960 |
| OPPOSITION | EP0650961 |
| OPPOSITION | US5607954 |
| OPPOSITION | US5610172 |
| OPPOSITION | US5620995 |
| OPPOSITION | US5620996 |
| OPPOSITION | US5668933 |
| OPPOSITION | US5719164 |
| OPPOSITION | US5726305 |
| OPPOSITION | US6020350 |
| OPPOSITION | US6093730 |
| OPPOSITION | WO03049686 |
| OPPOSITION | WO03053997 |
| OPPOSITION | WO2004108121 |
| SEARCH | WO03049686 |
| SEARCH | WO03053997 |
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
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May 24, 2022
Apr 14, 2022
Decision to grant a European patent
Search/Exam
Mar 31, 2022
(Electronic) Receipt
Search/Exam
Mar 31, 2022
Filing of the translations of the claims
Search/Exam
Mar 31, 2022
French translation of claims
Search/Exam
Mar 31, 2022
German translation of the claims
Search/Exam
Dec 1, 2021
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Intention to grant (signatures)
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Dec 1, 2021
Text intended for grant (clean copy)
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Dec 1, 2021
Jul 13, 2021
(Electronic) Receipt
Search/Exam
Jul 13, 2021
Description
Search/Exam
Jul 13, 2021
Letter accompanying subsequently filed items
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Jul 13, 2021
Mar 22, 2021
Mar 15, 2021
(Electronic) Receipt
Search/Exam
Mar 15, 2021
Letter accompanying subsequently filed items
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Jan 14, 2021
Annex to the communication
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Jan 14, 2021
Communication from the Examining Division
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Sep 1, 2020
Decision to allow further processing
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Aug 21, 2020
(Electronic) Receipt
Search/Exam
Aug 21, 2020
Amended claims with annotations
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Aug 21, 2020
Claims
Search/Exam
Aug 21, 2020
Letter accompanying subsequently filed items
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Aug 21, 2020
Request for further processing
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Jun 24, 2020
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Jan 28, 2020
(Electronic) Receipt
Search/Exam
Jan 28, 2020
Oct 1, 2019
Annex to the communication
Search/Exam
Oct 1, 2019
Communication from the Examining Division
Search/Exam
Sep 25, 2019
Examination started
Search/Exam
Aug 19, 2019
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Aug 8, 2019
(Electronic) Receipt
Search/Exam
Aug 8, 2019
Citation filed by a third party
Search/Exam
Aug 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2019
Observations by third parties
Search/Exam
May 22, 2019
Decision to allow further processing
Search/Exam
May 8, 2019
(Electronic) Receipt
Search/Exam
May 8, 2019
May 8, 2019
Amended claims with annotations
Search/Exam
May 8, 2019
Letter accompanying subsequently filed items
Search/Exam
May 8, 2019
Request for further processing
Search/Exam
Feb 28, 2019
Aug 13, 2018
Jul 18, 2018
Refund of fees
Search/Exam
Jul 11, 2018
Notification of forthcoming publication
Search/Exam
Jul 10, 2018
Jul 10, 2018
European search opinion
Search/Exam
Jul 10, 2018
European search report
Search/Exam
Jul 10, 2018
Information on Search Strategy
Search/Exam
Jun 15, 2018
Search started
Search/Exam
May 29, 2018
(Electronic) Receipt
Search/Exam
May 29, 2018
Letter concerning the inventor
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Apr 23, 2018
Communication to designated inventor
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Apr 23, 2018
Communication to designated inventor
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Apr 23, 2018
Communication to designated inventor
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Apr 23, 2018
Communication to designated inventor
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Apr 23, 2018
Communication to designated inventor
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Feb 27, 2018
Abstract
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Feb 27, 2018
Feb 27, 2018
Claims
Search/Exam
Feb 27, 2018
Description
Search/Exam
Feb 27, 2018
Designation of inventor
Search/Exam
Feb 27, 2018
Drawings
Search/Exam
Feb 27, 2018
Request for grant of a European patent
Search/Exam
Jan 22, 2008