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The patent EP3459554 was granted to Kohjin Life Sciences on Oct 27, 2021. The application was filed on May 16, 2017 under application number EP17799375A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| STEINBACH | Jul 27, 2022 | ZIMMERMANN & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2009291076 |
| INTERNATIONAL-SEARCH-REPORT | JP2011178794 |
| INTERNATIONAL-SEARCH-REPORT | JP2016037485 |
| OPPOSITION | CN102653722 |
| OPPOSITION | EP2620060 |
| OPPOSITION | JP2009291076 |
| OPPOSITION | JP2016037485 |
| OPPOSITION | US6458351 |
| SEARCH | JP2006347975 |
| SEARCH | JP2009291076 |
| SEARCH | WO0119542 |
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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Means of redress
OPPO
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Nov 9, 2021
Sep 30, 2021
Decision to grant a European patent
Search/Exam
Sep 10, 2021
(Electronic) Receipt
Search/Exam
Sep 10, 2021
Filing of the translations of the claims
Search/Exam
Sep 10, 2021
French translation of claims
Search/Exam
Sep 10, 2021
German translation of the claims
Search/Exam
Sep 10, 2021
Letter accompanying subsequently filed items
Search/Exam
May 28, 2021
May 28, 2021
May 28, 2021
Intention to grant (signatures)
Search/Exam
May 28, 2021
Text intended for grant (clean copy)
Search/Exam
May 28, 2021
May 3, 2021
(Electronic) Receipt
Search/Exam
May 3, 2021
Amended claims with annotations
Search/Exam
May 3, 2021
Amended description with annotations
Search/Exam
May 3, 2021
Claims
Search/Exam
May 3, 2021
Description
Search/Exam
May 3, 2021
Letter accompanying subsequently filed items
Search/Exam
May 3, 2021
Mar 23, 2021
Annex to the communication
Search/Exam
Mar 23, 2021
Mar 23, 2021
Oct 22, 2020
(Electronic) Receipt
Search/Exam
Oct 22, 2020
Amended claims with annotations
Search/Exam
Oct 22, 2020
Amended description with annotations
Search/Exam
Oct 22, 2020
Claims
Search/Exam
Oct 22, 2020
Description
Search/Exam
Oct 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 22, 2020
Jun 26, 2020
Annex to the communication
Search/Exam
Jun 26, 2020
Communication from the Examining Division
Search/Exam
Jun 23, 2020
Examination started
Search/Exam
Mar 25, 2020
(Electronic) Receipt
Search/Exam
Mar 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 25, 2020
Mar 25, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Oct 29, 2019
Oct 10, 2019
Oct 10, 2019
European search opinion
Search/Exam
Oct 10, 2019
Information on Search Strategy
Search/Exam
Oct 10, 2019
Supplementary European search report
Search/Exam
Feb 27, 2019
Notification of forthcoming publication
Search/Exam
Jan 3, 2019
Dec 21, 2018
Communication to designated inventor
Search/Exam
Dec 21, 2018
Communication to designated inventor
Search/Exam
Dec 7, 2018
Dec 7, 2018
Nov 15, 2018
(Electronic) Receipt
Search/Exam
Nov 15, 2018
Abstract
Search/Exam
Nov 15, 2018
Claims
Search/Exam
Nov 15, 2018
Description
Search/Exam
Nov 15, 2018
Drawings
Search/Exam
Nov 15, 2018
Request for entry into the European phase
Search/Exam
Sep 28, 2018
Information on entry into European phase
Search/Exam
Dec 13, 2017
Nov 23, 2017
Copy of the international search report
Search/Exam
Nov 23, 2017
Nov 23, 2017
International publication pamphlet
Search/Exam