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The patent EP3723506 was granted to DSM Assets on Apr 3, 2024. The application was filed on Dec 13, 2018 under application number EP18815212A. 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 |
|---|---|---|---|
| N&H DENMARK APS | Jan 2, 2025 | D YOUNG | ADMISSIBLE |
| BASF | Dec 20, 2024 | BASF ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0986313 |
| DESCRIPTION | US2002028267 |
| DESCRIPTION | US2009317515 |
| DESCRIPTION | US2010310720 |
| INTERNATIONAL-SEARCH-REPORT | EP0990026 |
| INTERNATIONAL-SEARCH-REPORT | US2009317515 |
| INTERNATIONAL-SEARCH-REPORT | US2010310720 |
| INTERNATIONAL-SEARCH-REPORT | WO2016114648 |
| OPPOSITION | US2009317515 |
| OPPOSITION | US2010310720 |
| OPPOSITION | US2013089640 |
| OPPOSITION | WO2016114648 |
| OPPOSITION | WO9742839 |
| OPPOSITION | WO9854980 |
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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Complaint
OPPO
May 26, 2025
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Sep 24, 2024
Annexes in respect of a client data request
Search/Exam
Sep 24, 2024
Annexes in respect of a client data request
Search/Exam
Sep 24, 2024
Annexes in respect of a client data request
Search/Exam
Sep 24, 2024
Letter accompanying subsequently filed items
Search/Exam
Sep 24, 2024
Sep 3, 2024
Aug 28, 2024
Annexes in respect of a client data request
Search/Exam
Aug 28, 2024
Letter accompanying subsequently filed items
Search/Exam
Aug 28, 2024
Apr 16, 2024
Mar 7, 2024
Decision to grant a European patent
Search/Exam
Feb 28, 2024
(Electronic) Receipt
Search/Exam
Feb 28, 2024
Filing of the translations of the claims
Search/Exam
Feb 28, 2024
French translation of claims
Search/Exam
Feb 28, 2024
German translation of the claims
Search/Exam
Feb 28, 2024
Letter accompanying subsequently filed items
Search/Exam
Nov 23, 2023
Nov 23, 2023
Nov 23, 2023
Nov 23, 2023
Intention to grant (signatures)
Search/Exam
Nov 23, 2023
Text intended for grant (clean copy)
Search/Exam
Nov 23, 2023
Oct 27, 2023
Examination started
Search/Exam
Dec 16, 2020
(Electronic) Receipt
Search/Exam
Dec 16, 2020
Dec 16, 2020
Amendments received before examination
Search/Exam
Dec 16, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 23, 2020
Jul 21, 2020
Jul 17, 2020
Communication to designated inventor
Search/Exam
Jul 17, 2020
Communication to designated inventor
Search/Exam
Jul 17, 2020
Communication to designated inventor
Search/Exam
Jul 14, 2020
Priority search results copy provided by EPO
Search/Exam
Jun 29, 2020
May 19, 2020
(Electronic) Receipt
Search/Exam
May 19, 2020
Request for entry into the European phase
Search/Exam
Apr 24, 2020
Information on entry into European phase
Search/Exam
Jan 2, 2020
Jan 2, 2020
Jan 2, 2020
Notification of the recording of a change
Search/Exam
Dec 17, 2019
(Electronic) Receipt
PCTRO
Dec 17, 2019
Dec 17, 2019
Jul 9, 2019
Jun 20, 2019
Copy of the international search report
Search/Exam
Jun 20, 2019
Published international application - A1
Search/Exam
Apr 1, 2019
ISR: cited documents
PCTISA
Apr 1, 2019
Apr 1, 2019
Apr 1, 2019
Jan 2, 2019
Dec 21, 2018
Dec 18, 2018
Dec 13, 2018
(Electronic) Receipt
PCTRO
Dec 13, 2018
Abstract
PCTRO
Dec 13, 2018
Claims
PCTRO
Dec 13, 2018
Description
PCTRO
Dec 13, 2018
Dec 13, 2018
Drawings
PCTRO
Dec 13, 2018
Dec 13, 2018