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The patent EP3200602 was granted to Evonik Degussa on Mar 10, 2021. The application was filed on Sep 22, 2015 under application number EP15766504A. 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 |
|---|---|---|---|
| ABEL & IMRAY | Dec 9, 2021 | HART | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP20130176661 |
| DESCRIPTION | EP20130187631 |
| DESCRIPTION | WO0154510 |
| DESCRIPTION | WO9107498 |
| DESCRIPTION | WO9408467 |
| DESCRIPTION | WO9736996 |
| DESCRIPTION | WO9737032 |
| INTERNATIONAL-SEARCH-REPORT | WO0154510 |
| INTERNATIONAL-SEARCH-REPORT | WO2014122092 |
| INTERNATIONAL-SEARCH-REPORT | WO9408467 |
| INTERNATIONAL-SEARCH-REPORT | WO9737032 |
| OPPOSITION | US2010086638 |
| OPPOSITION | WO0154510 |
| OPPOSITION | WO2014122092 |
| OPPOSITION | WO9408467 |
| OPPOSITION | WO9737032 |
| OPPOSITION | WO9849904 |
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 17, 2025
Dec 12, 2025
(Electronic) Receipt
Appeal
Dec 12, 2025
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(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Apr 25, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Feb 7, 2024
Notice of appeal
Appeal
Feb 7, 2024
Notice of appeal
Appeal
Jan 2, 2024
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Means of redress
OPPO
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Communication of amended entries
Search/Exam
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Mar 22, 2021
Feb 11, 2021
Decision to grant a European patent
Search/Exam
Feb 1, 2021
(Electronic) Receipt
Search/Exam
Feb 1, 2021
English translation of the claims
Search/Exam
Feb 1, 2021
Filing of the translations of the claims
Search/Exam
Feb 1, 2021
French translation of claims
Search/Exam
Feb 1, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 23, 2020
Oct 23, 2020
Oct 23, 2020
Intention to grant (signatures)
Search/Exam
Oct 23, 2020
Text intended for grant (clean copy)
Search/Exam
Oct 23, 2020
Oct 2, 2020
Annex to the communication
Search/Exam
Oct 2, 2020
Consultation by telephone/in person
Search/Exam
Oct 2, 2020
Aug 31, 2020
Annex to the communication
Search/Exam
Aug 31, 2020
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Aug 25, 2020
(Electronic) Receipt
Search/Exam
Aug 25, 2020
Amended claims with annotations
Search/Exam
Aug 25, 2020
Amended description with annotations
Search/Exam
Aug 25, 2020
Claims
Search/Exam
Aug 25, 2020
Description
Search/Exam
Aug 25, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 25, 2020
Nov 12, 2019
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Aug 22, 2019
(Electronic) Receipt
Search/Exam
Aug 22, 2019
Amended claims with annotations
Search/Exam
Aug 22, 2019
Annex
Search/Exam
Aug 22, 2019
Claims
Search/Exam
Aug 22, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 22, 2019
Jun 17, 2019
Jun 12, 2019
(Electronic) Receipt
Search/Exam
Jun 12, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2019
Apr 23, 2019
Apr 10, 2019
(Electronic) Receipt
Search/Exam
Apr 10, 2019
General authorisation
Search/Exam
Apr 10, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 10, 2019
Feb 19, 2019
Annex to the communication
Search/Exam
Feb 19, 2019
Communication from the Examining Division
Search/Exam
Feb 8, 2019
Examination started
Search/Exam
Nov 13, 2017
(Electronic) Receipt
Search/Exam
Nov 13, 2017
Nov 13, 2017
Amended claims with annotations
Search/Exam
Nov 13, 2017
Amendments received before examination
Search/Exam
Nov 13, 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
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Letter which had not been notified
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May 10, 2017
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
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Communication to designated inventor
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May 8, 2017
Communication to designated inventor
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May 2, 2017
Priority search results copy provided by EPO
Search/Exam
Apr 18, 2017
Mar 29, 2017
(Electronic) Receipt
Search/Exam
Mar 29, 2017
Request for entry into the European phase
Search/Exam
Feb 10, 2017
Information on entry into European phase
Search/Exam
Dec 15, 2016
Dec 15, 2016
Dec 15, 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
Dec 1, 2015
ISR: cited documents
PCTISA
Dec 1, 2015
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Oct 1, 2015
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(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