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The patent EP3823594 was granted to Ichnos Sciences on Feb 5, 2025. The application was filed on Jul 19, 2019 under application number EP19740024A. 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 |
|---|---|---|---|
| GRUNECKER PATENT UND RECHTSANWALTE PARTG MBB | Nov 5, 2025 | GRUNECKER PATENT | ADMISSIBLE |
| J A KEMP | Nov 5, 2025 | J A KEMP | ADMISSIBLE |
| SANOFI | Nov 3, 2025 | HOFFMANN EITLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO1992US09965 |
| DESCRIPTION | WO9413804 |
| INTERNATIONAL-SEARCH-REPORT | WO2009141239 |
| INTERNATIONAL-SEARCH-REPORT | WO2014207763 |
| INTERNATIONAL-SEARCH-REPORT | WO2015135884 |
| INTERNATIONAL-SEARCH-REPORT | WO2016063299 |
| INTERNATIONAL-SEARCH-REPORT | WO2017134292 |
| OPPOSITION | AU2014203661 |
| OPPOSITION | EP2238985 |
| OPPOSITION | EP2399604 |
| OPPOSITION | US2004191243 |
| OPPOSITION | US2016355598 |
| OPPOSITION | WO2004091658 |
| OPPOSITION | WO2006029879 |
| OPPOSITION | WO2007062245 |
| OPPOSITION | WO2008106116 |
| OPPOSITION | WO2009141239 |
| OPPOSITION | WO2010096418 |
| OPPOSITION | WO2014036076 |
| OPPOSITION | WO2016034648 |
| OPPOSITION | WO2017096281 |
| OPPOSITION | WO2017134292 |
| OPPOSITION | WO2017189827 |
| OPPOSITION | WO2018045054 |
| OPPOSITION | WO2019229155 |
| OPPOSITION | WO2020016417 |
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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Document concerning representation
Search/Exam
Feb 7, 2025
Letter accompanying subsequently filed items
Search/Exam
Jan 10, 2025
Decision to grant a European patent
Search/Exam
Nov 29, 2024
(Electronic) Receipt
Search/Exam
Nov 29, 2024
Filing of the translations of the claims
Search/Exam
Nov 29, 2024
French translation of claims
Search/Exam
Nov 29, 2024
German translation of the claims
Search/Exam
Nov 29, 2024
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2024
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Intention to grant (signatures)
Search/Exam
Jul 29, 2024
Text intended for grant (clean copy)
Search/Exam
Jul 29, 2024
Jan 8, 2024
Dec 22, 2023
(Electronic) Receipt
Search/Exam
Dec 22, 2023
Authorisation
Search/Exam
Dec 22, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2023
Sep 4, 2023
Jul 28, 2023
(Electronic) Receipt
Search/Exam
Jul 28, 2023
Abstract
Search/Exam
Jul 28, 2023
Abstract
Search/Exam
Jul 28, 2023
Amended claims with annotations
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Jul 28, 2023
Amended description with annotations
Search/Exam
Jul 28, 2023
Claims
Search/Exam
Jul 28, 2023
Description
Search/Exam
Jul 28, 2023
Letter accompanying subsequently filed items
Search/Exam
Jul 28, 2023
Mar 29, 2023
Annex to the communication
Search/Exam
Mar 29, 2023
Communication from the Examining Division
Search/Exam
Mar 22, 2023
Examination started
Search/Exam
Sep 5, 2022
Sep 16, 2021
(Electronic) Receipt
Search/Exam
Sep 16, 2021
Sep 16, 2021
Amended claims with annotations
Search/Exam
Sep 16, 2021
Amendments received before examination
Search/Exam
Sep 16, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 29, 2021
Mar 15, 2021
Mar 11, 2021
Communication to designated inventor
Search/Exam
Mar 11, 2021
Communication to designated inventor
Search/Exam
Mar 11, 2021
Communication to designated inventor
Search/Exam
Mar 11, 2021
Communication to designated inventor
Search/Exam
Mar 11, 2021
Communication to designated inventor
Search/Exam
Feb 19, 2021
(Electronic) Receipt
Search/Exam
Feb 19, 2021
Feb 19, 2021
Request for entry into the European phase
Search/Exam
Feb 1, 2021
Nov 27, 2020
Information on entry into European phase
Search/Exam
Feb 14, 2020
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Jan 23, 2020
Copy of the international search report
Search/Exam
Jan 23, 2020
Published international application - A1
Search/Exam
Dec 4, 2019
ISR: cited documents
PCTISA
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(Electronic) Receipt
PCTRO
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(Electronic) Receipt
PCTRO
Jul 19, 2019
Abstract
PCTRO
Jul 19, 2019
Claims
PCTRO
Jul 19, 2019
Description
PCTRO
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Drawings
PCTRO
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