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The patent EP3200604 was granted to Evonik Degussa on May 7, 2025. The application was originally filed on Sep 22, 2015 under application number EP15767149A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| CORBION BIOTECH | Aug 3, 2022 | DE VRIES & METMAN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN102687810 |
| INTERNATIONAL-SEARCH-REPORT | CN103070293 |
| INTERNATIONAL-SEARCH-REPORT | CN103385390 |
| INTERNATIONAL-SEARCH-REPORT | WO2008049512 |
| INTERNATIONAL-SEARCH-REPORT | WO2014122092 |
| OPPOSITION | CN102160604 |
| OPPOSITION | CN103385390 |
| OPPOSITION | CN104082581 |
| OPPOSITION | US5518918 |
| OPPOSITION | WO2004080196 |
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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Apr 10, 2025
Apr 10, 2025
Apr 4, 2025
Refund of fees
Search/Exam
Mar 27, 2025
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OPPO
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Nov 16, 2021
Oct 7, 2021
Decision to grant a European patent
Search/Exam
Sep 24, 2021
(Electronic) Receipt
Search/Exam
Sep 24, 2021
English translation of the claims
Search/Exam
Sep 24, 2021
Filing of the translations of the claims
Search/Exam
Sep 24, 2021
French translation of claims
Search/Exam
Sep 24, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 4, 2021
Aug 4, 2021
Aug 4, 2021
Aug 4, 2021
Intention to grant (signatures)
Search/Exam
Aug 4, 2021
Text intended for grant (clean copy)
Search/Exam
Aug 4, 2021
Jun 15, 2021
(Electronic) Receipt
Search/Exam
Jun 15, 2021
Description
Search/Exam
Jun 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 15, 2021
May 25, 2021
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May 25, 2021
Intention to grant (signatures)
Search/Exam
May 25, 2021
Text intended for grant (clean copy)
Search/Exam
May 25, 2021
Feb 2, 2021
(Electronic) Receipt
Search/Exam
Feb 2, 2021
Amended claims with annotations
Search/Exam
Feb 2, 2021
Claims
Search/Exam
Feb 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 2, 2021
Dec 23, 2020
Annex to the communication
Search/Exam
Dec 23, 2020
Communication from the Examining Division
Search/Exam
Oct 20, 2020
(Electronic) Receipt
Search/Exam
Oct 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 20, 2020
Sep 22, 2020
Annex to the communication
Search/Exam
Sep 22, 2020
Communication from the Examining Division
Search/Exam
Aug 19, 2020
(Electronic) Receipt
Search/Exam
Aug 19, 2020
Amended claims with annotations
Search/Exam
Aug 19, 2020
Amended claims with annotations
Search/Exam
Aug 19, 2020
Amended claims with annotations
Search/Exam
Aug 19, 2020
Claims
Search/Exam
Aug 19, 2020
Claims
Search/Exam
Aug 19, 2020
Claims
Search/Exam
Aug 19, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 19, 2020
Jun 4, 2020
Annex to the communication
Search/Exam
Jun 4, 2020
Communication from the Examining Division
Search/Exam
Nov 12, 2019
Nov 6, 2019
Nov 6, 2019
Sep 30, 2019
(Electronic) Receipt
Search/Exam
Sep 30, 2019
Amended claims with annotations
Search/Exam
Sep 30, 2019
Claims
Search/Exam
Sep 30, 2019
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2019
Sep 9, 2019
Annex to the communication
Search/Exam
Sep 9, 2019
Communication from the Examining Division
Search/Exam
Sep 3, 2019
Examination started
Search/Exam
Jun 14, 2019
Apr 23, 2019
Apr 11, 2019
(Electronic) Receipt
Search/Exam
Apr 11, 2019
General authorisation
Search/Exam
Apr 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 11, 2019
Nov 7, 2017
(Electronic) Receipt
Search/Exam
Nov 7, 2017
Nov 7, 2017
Amended claims with annotations
Search/Exam
Nov 7, 2017
Amendments received before examination
Search/Exam
Nov 7, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2017
Communication to designated inventor
Search/Exam
Jul 31, 2017
Letter concerning the inventor
Search/Exam
Jul 12, 2017
Jun 28, 2017
Jun 14, 2017
Letter which had not been notified
Search/Exam
May 16, 2017
May 9, 2017
Priority search results copy provided by EPO
Search/Exam
May 8, 2017
Communication to designated inventor
Search/Exam
May 8, 2017
Communication to designated inventor
Search/Exam
May 8, 2017
Communication to designated inventor
Search/Exam
May 8, 2017
Communication to designated inventor
Search/Exam
Apr 18, 2017
Mar 23, 2017
(Electronic) Receipt
Search/Exam
Mar 23, 2017
Request for entry into the European phase
Search/Exam
Feb 10, 2017
Information on entry into European phase
Search/Exam
Dec 13, 2016
Dec 13, 2016
Dec 13, 2016
Notification of the recording of a change
Search/Exam
Apr 28, 2016
Apr 7, 2016
Copy of the international search report
Search/Exam
Apr 7, 2016
Copy of the international search report
Search/Exam
Apr 7, 2016
Published international application - A1
Search/Exam
Oct 23, 2015
ISR: cited documents
PCTISA
Oct 23, 2015
Oct 22, 2015
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Oct 5, 2015
Oct 2, 2015
Sep 29, 2015
Sep 26, 2015
Sep 22, 2015
(Electronic) Receipt
PCTRO
Sep 22, 2015
Abstract
PCTRO
Sep 22, 2015
Claims
PCTRO
Sep 22, 2015
Description
PCTRO
Sep 22, 2015
Sep 22, 2015
Sep 22, 2015