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The patent EP3778041 was granted to Siempelkamp Maschinen UND Anlagenbau on Jul 12, 2023. The application was filed on Aug 9, 2018 under application number EP20191977A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| DIEFFENBACHER MASCHINEN UND ANLAGENBAU | Apr 12, 2024 | LBP LEMCKE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102009057916 |
| DESCRIPTION | DE102015120653 |
| DESCRIPTION | US2010163463 |
| EXAMINATION | US6652695 |
| OPPOSITION | AT375283B |
| OPPOSITION | CN100369726C |
| OPPOSITION | DE10010354 |
| OPPOSITION | DE10115831 |
| OPPOSITION | DE10116686 |
| OPPOSITION | DE102010053467 |
| OPPOSITION | DE102011008757 |
| OPPOSITION | DE102015120653 |
| OPPOSITION | DE1134941 |
| OPPOSITION | DE19519516 |
| OPPOSITION | DE19947862 |
| OPPOSITION | DE202006014455U |
| OPPOSITION | DE3021455 |
| OPPOSITION | DE4339532 |
| OPPOSITION | EP0755726 |
| OPPOSITION | EP1159113 |
| OPPOSITION | EP1331045 |
| OPPOSITION | FR2102604 |
| OPPOSITION | GB1446491 |
| OPPOSITION | US2005258561 |
| OPPOSITION | US2010163463 |
| OPPOSITION | US2222861 |
| OPPOSITION | US247694 |
| OPPOSITION | WO2006111498 |
| OPPOSITION | WO2011014137 |
| OPPOSITION | WO9634726 |
| OPPOSITION | WO9942224 |
| SEARCH | DE1134941 |
| SEARCH | EP1331045 |
| SEARCH | FR2102604 |
| SEARCH | KR101048410B |
| SEARCH | US2222861 |
| SEARCH | WO2011014137 |
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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Oct 6, 2025
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Means of redress
OPPO
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Jul 25, 2023
Jun 15, 2023
Decision to grant a European patent
Search/Exam
Jun 1, 2023
(Electronic) Receipt
Search/Exam
Jun 1, 2023
English translation of the claims
Search/Exam
Jun 1, 2023
Filing of the translations of the claims
Search/Exam
Jun 1, 2023
French translation of claims
Search/Exam
Jun 1, 2023
Letter concerning fees and payments
Search/Exam
Mar 3, 2023
Mar 3, 2023
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Mar 3, 2023
Intention to grant (signatures)
Search/Exam
Mar 3, 2023
Text intended for grant (clean copy)
Search/Exam
Mar 3, 2023
Sep 30, 2022
(Electronic) Receipt
Search/Exam
Sep 30, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2022
Jul 4, 2022
Annex to the communication
Search/Exam
Jul 4, 2022
Communication from the Examining Division
Search/Exam
Jun 23, 2022
Examination started
Search/Exam
Jul 9, 2021
(Electronic) Receipt
Search/Exam
Jul 9, 2021
Jul 9, 2021
Amended claims with annotations
Search/Exam
Jul 9, 2021
Amendments received before examination
Search/Exam
Jul 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 22, 2021
Jan 22, 2021
Refund of fees
Search/Exam
Jan 20, 2021
Notification of forthcoming publication
Search/Exam
Jan 19, 2021
Jan 19, 2021
European search opinion
Search/Exam
Jan 19, 2021
European search report
Search/Exam
Jan 19, 2021
Information on Search Strategy
Search/Exam
Oct 13, 2020
Communication to designated inventor
Search/Exam
Oct 13, 2020
Communication to designated inventor
Search/Exam
Oct 13, 2020
Communication to designated inventor
Search/Exam
Oct 13, 2020
Communication to designated inventor
Search/Exam
Sep 11, 2020
(Electronic) Receipt
Search/Exam
Sep 11, 2020
Designation of inventor
Search/Exam
Sep 11, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 11, 2020
Letter concerning the inventor
Search/Exam
Sep 3, 2020
Deficiency in designation of inventor
Search/Exam
Aug 26, 2020
(Electronic) Receipt
Search/Exam
Aug 26, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 20, 2020
Abstract
Search/Exam
Aug 20, 2020
Aug 20, 2020
Claims
Search/Exam
Aug 20, 2020
Description
Search/Exam
Aug 20, 2020
Drawings
Search/Exam
Aug 20, 2020
Request for grant of a European patent
Search/Exam
Feb 7, 2020
Priority search results
Search/Exam
Mar 27, 2019