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The patent EP3592727 was granted to Covestro on Apr 3, 2024. The application was filed on Mar 5, 2018 under application number EP18709001A. 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 |
|---|---|---|---|
| JOSEF MEISSNER | Nov 12, 2024 | VON ROHR PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102008048713 |
| DESCRIPTION | DE2821571 |
| DESCRIPTION | EP0156199 |
| DESCRIPTION | EP0436443 |
| DESCRIPTION | EP0708076 |
| DESCRIPTION | EP0771783 |
| DESCRIPTION | EP1132347 |
| DESCRIPTION | EP1291078 |
| DESCRIPTION | EP1593654 |
| DESCRIPTION | EP1816117 |
| DESCRIPTION | EP2354117 |
| DESCRIPTION | US4091042 |
| DESCRIPTION | US5763697 |
| DESCRIPTION | US6562247 |
| DESCRIPTION | WO2012013678 |
| DESCRIPTION | WO2014016290 |
| DESCRIPTION | WO2014016292 |
| DESCRIPTION | WO2014177450 |
| DESCRIPTION | WO2015197521 |
| INTERNATIONAL-SEARCH-REPORT | DE2821571 |
| INTERNATIONAL-SEARCH-REPORT | WO2014016290 |
| INTERNATIONAL-SEARCH-REPORT | WO2014177450 |
| INTERNATIONAL-SEARCH-REPORT | WO2015197521 |
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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Mar 7, 2024
Decision to grant a European patent
Search/Exam
Feb 27, 2024
Feb 20, 2024
(Electronic) Receipt
Search/Exam
Feb 20, 2024
English translation of the claims
Search/Exam
Feb 20, 2024
Filing of the translations of the claims
Search/Exam
Feb 20, 2024
French translation of claims
Search/Exam
Feb 20, 2024
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2023
Dec 15, 2023
Annexes in respect of a client data request
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Dec 15, 2023
Annexes in respect of a client data request
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Dec 15, 2023
Annexes in respect of a client data request
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Dec 15, 2023
Annexes in respect of a client data request
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Dec 15, 2023
Annexes in respect of a client data request
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Dec 15, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 15, 2023
Nov 6, 2023
Nov 6, 2023
Nov 6, 2023
Nov 6, 2023
Intention to grant (signatures)
Search/Exam
Nov 6, 2023
Text intended for grant (clean copy)
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Nov 6, 2023
Oct 12, 2023
(Electronic) Receipt
Search/Exam
Oct 12, 2023
Amended description with annotations
Search/Exam
Oct 12, 2023
Description
Search/Exam
Oct 12, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 12, 2023
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Sep 27, 2023
Intention to grant (signatures)
Search/Exam
Sep 27, 2023
Text intended for grant (clean copy)
Search/Exam
Sep 27, 2023
Feb 1, 2023
(Electronic) Receipt
Search/Exam
Feb 1, 2023
Matter concerning the application
Search/Exam
Dec 10, 2021
(Electronic) Receipt
Search/Exam
Dec 10, 2021
Amended claims with annotations
Search/Exam
Dec 10, 2021
Amended description with annotations
Search/Exam
Dec 10, 2021
Claims
Search/Exam
Dec 10, 2021
Description
Search/Exam
Dec 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 10, 2021
Oct 13, 2021
Oct 8, 2021
(Electronic) Receipt
Search/Exam
Oct 8, 2021
Jun 7, 2021
Annex to the communication
Search/Exam
Jun 7, 2021
Communication from the Examining Division
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May 31, 2021
Examination started
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Aug 12, 2020
Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Annexes in respect of a client data request
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Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Annexes in respect of a client data request
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Jun 19, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2020
Apr 21, 2020
(Electronic) Receipt
Search/Exam
Apr 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 21, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Dec 18, 2019
Oct 16, 2019
Oct 14, 2019
Communication to designated inventor
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Oct 14, 2019
Communication to designated inventor
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Oct 14, 2019
Communication to designated inventor
Search/Exam
Oct 9, 2019
Priority search results copy provided by EPO
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Sep 23, 2019
Sep 5, 2019
Information regarding early processing
Search/Exam
Aug 23, 2019
(Electronic) Receipt
Search/Exam
Aug 23, 2019
Request for entry into the European phase
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Jul 17, 2019
Information on entry into European phase
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Oct 3, 2018
Sep 13, 2018
Copy of the international search report
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Sep 13, 2018
Copy of the international search report
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Sep 13, 2018
Published international application - A1
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May 8, 2018
May 8, 2018
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Mar 20, 2018
Mar 5, 2018
(Electronic) Receipt
PCTRO
Mar 5, 2018
Abstract
PCTRO
Mar 5, 2018
Claims
PCTRO
Mar 5, 2018
Description
PCTRO
Mar 5, 2018
Mar 5, 2018
Mar 5, 2018