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The patent EP3634919 was granted to Eurokera on Apr 14, 2021. The application was filed on Jun 6, 2018 under application number EP18727847A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| SCHOTT | Jan 11, 2022 | FUCHS | - |
| SCHOTT | Jan 11, 2022 | FUCHS PATENTANWALTE PARTNERSCHAFT MBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2015197444 |
| DESCRIPTION | US4461839 |
| DESCRIPTION | US5070045 |
| DESCRIPTION | US5173453 |
| DESCRIPTION | US6846760 |
| DESCRIPTION | US8053381 |
| DESCRIPTION | US8318619 |
| DESCRIPTION | US9051209 |
| DESCRIPTION | US9051210 |
| DESCRIPTION | WO2012156444 |
| INTERNATIONAL-SEARCH-REPORT | DE19939787 |
| INTERNATIONAL-SEARCH-REPORT | EP0220333 |
| INTERNATIONAL-SEARCH-REPORT | FR2955574 |
| INTERNATIONAL-SEARCH-REPORT | US4461839 |
| OPPOSITION | DE19939787 |
| OPPOSITION | DE2429563 |
| OPPOSITION | EP0220333 |
| OPPOSITION | JPH01308845 |
| OPPOSITION | US2013098903 |
| OPPOSITION | US2013178353 |
| OPPOSITION | US2014135201 |
| OPPOSITION | US4461839 |
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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Sep 19, 2025
Sep 19, 2025
Sep 19, 2025
Jul 15, 2025
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(Electronic) Receipt
Appeal
Jul 4, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
May 23, 2025
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Claims
Appeal
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(Electronic) Receipt
Appeal
Oct 18, 2024
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(Electronic) Receipt
Appeal
Oct 9, 2024
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Appeal
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Appeal
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(Electronic) Receipt
Appeal
Jul 11, 2024
Jul 11, 2024
Reply to appeal
Appeal
Jul 10, 2024
Jul 4, 2024
(Electronic) Receipt
Appeal
Jul 4, 2024
Jul 4, 2024
Reply to appeal
Appeal
Mar 11, 2024
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Mar 4, 2024
(Electronic) Receipt
Appeal
Mar 4, 2024
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(Electronic) Receipt
Appeal
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Dec 28, 2023
(Electronic) Receipt
Appeal
Dec 28, 2023
Dec 28, 2023
Notice of appeal
Appeal
Dec 21, 2023
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Dec 15, 2023
(Electronic) Receipt
Appeal
Dec 15, 2023
Dec 15, 2023
Notice of appeal
Appeal
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OPPO
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Description
OPPO
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Jun 8, 2021
Payment submission rejected
Search/Exam
Apr 28, 2021
Mar 18, 2021
Decision to grant a European patent
Search/Exam
Mar 9, 2021
(Electronic) Receipt
Search/Exam
Mar 9, 2021
Filing of the translations of the claims
Search/Exam
Mar 9, 2021
French translation of claims
Search/Exam
Mar 9, 2021
German translation of the claims
Search/Exam
Mar 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 14, 2020
Dec 14, 2020
Dec 14, 2020
Intention to grant (signatures)
Search/Exam
Dec 14, 2020
Text intended for grant (clean copy)
Search/Exam
Dec 14, 2020
Nov 9, 2020
Examination started
Search/Exam
Jul 8, 2020
(Electronic) Receipt
Search/Exam
Jul 8, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 8, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 18, 2020
Jan 17, 2020
Jan 11, 2020
Priority search results copy provided by EPO
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 10, 2020
Communication to designated inventor
Search/Exam
Jan 6, 2020
Nov 28, 2019
Information regarding early processing
Search/Exam
Nov 21, 2019
(Electronic) Receipt
Search/Exam
Nov 21, 2019
Request for entry into the European phase
Search/Exam
Oct 18, 2019
Information on entry into European phase
Search/Exam
Jan 4, 2019
Dec 13, 2018
Copy of the international search report
Search/Exam
Dec 13, 2018
Published international application - A1
Search/Exam
Jun 29, 2018
Jun 29, 2018
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Jun 12, 2018
Jun 6, 2018
(Electronic) Receipt
PCTRO
Jun 6, 2018
Abstract
PCTRO
Jun 6, 2018
Claims
PCTRO
Jun 6, 2018
Description
PCTRO
Jun 6, 2018
Jun 6, 2018