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The patent EP3435773 was granted to CHR Hansen on Oct 13, 2021. The application was filed on Mar 24, 2017 under application number EP17712792A. 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 | Jul 13, 2022 | D YOUNG | ADMISSIBLE |
| DSM ASSETS | Jul 12, 2022 | J A KEMP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2957180 |
| DESCRIPTION | WO2005003327 |
| DESCRIPTION | WO2011026863 |
| DESCRIPTION | WO2013160413 |
| INTERNATIONAL-SEARCH-REPORT | EP2957180 |
| INTERNATIONAL-SEARCH-REPORT | US2015086675 |
| OPPOSITION | EP2957180 |
| OPPOSITION | WO2011026863 |
| OPPOSITION | WO2012136832 |
| OPPOSITION | WO2013160413 |
| OPPOSITION | WO2015193459 |
| OPPOSITION | WO2017103051 |
| OPPOSITION | WO2018177835 |
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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Dec 15, 2025
Dec 15, 2025
Dec 10, 2025
(Electronic) Receipt
Appeal
Dec 10, 2025
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(Electronic) Receipt
Appeal
Nov 26, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Jun 18, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 19, 2024
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 2, 2024
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Authorisation
Appeal
Apr 2, 2024
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Mar 13, 2024
Letter accompanying subsequently filed items
Search/Exam
Feb 23, 2024
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(Electronic) Receipt
Appeal
Feb 19, 2024
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Notice of appeal
Appeal
Feb 16, 2024
(Electronic) Receipt
Appeal
Feb 16, 2024
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Notice of appeal
Appeal
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Means of redress
OPPO
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Oct 26, 2021
Sep 16, 2021
Decision to grant a European patent
Search/Exam
Sep 6, 2021
(Electronic) Receipt
Search/Exam
Sep 6, 2021
Filing of the translations of the claims
Search/Exam
Sep 6, 2021
French translation of claims
Search/Exam
Sep 6, 2021
German translation of the claims
Search/Exam
Sep 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 2, 2021
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Intention to grant (signatures)
Search/Exam
Jun 2, 2021
Text intended for grant (clean copy)
Search/Exam
Jun 2, 2021
Mar 11, 2021
(Electronic) Receipt
Search/Exam
Mar 11, 2021
Abstract
Search/Exam
Mar 11, 2021
Abstract
Search/Exam
Mar 11, 2021
Amended claims with annotations
Search/Exam
Mar 11, 2021
Amended description with annotations
Search/Exam
Mar 11, 2021
Claims
Search/Exam
Mar 11, 2021
Description
Search/Exam
Mar 11, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 11, 2021
Nov 2, 2020
Annex to the communication
Search/Exam
Nov 2, 2020
Communication from the Examining Division
Search/Exam
Oct 26, 2020
Examination started
Search/Exam
Jun 25, 2019
(Electronic) Receipt
Search/Exam
Jun 25, 2019
Jun 25, 2019
Amended claims with annotations
Search/Exam
Jun 25, 2019
Amendments received before examination
Search/Exam
Jun 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 9, 2019
Dec 18, 2018
Dec 11, 2018
Priority search results copy provided by EPO
Search/Exam
Nov 22, 2018
Nov 9, 2018
Communication to designated inventor
Search/Exam
Nov 9, 2018
Communication to designated inventor
Search/Exam
Nov 9, 2018
Communication to designated inventor
Search/Exam
Nov 9, 2018
Communication to designated inventor
Search/Exam
Oct 22, 2018
(Electronic) Receipt
Search/Exam
Oct 22, 2018
Request for entry into the European phase
Search/Exam
Oct 16, 2018
Aug 10, 2018
Information on entry into European phase
Search/Exam
Oct 24, 2017
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Oct 5, 2017
Copy of the international search report
Search/Exam
Oct 5, 2017
Published international application - A1
Search/Exam
May 2, 2017
Apr 26, 2017
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Apr 20, 2017
(Electronic) Receipt
PCTRO
Apr 20, 2017
Apr 20, 2017
RO101 Declaration
PCTRO
Apr 4, 2017
Mar 24, 2017
(Electronic) Receipt
PCTRO
Mar 24, 2017
Abstract
PCTRO
Mar 24, 2017
Claims
PCTRO
Mar 24, 2017
Description
PCTRO
Mar 24, 2017
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