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The patent EP3947861 was granted to Putzmeister Engineering on Feb 15, 2023. The application was filed on Mar 25, 2020 under application number EP20715797A. 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 |
|---|---|---|---|
| SCHWING | Nov 15, 2023 | SCHNEIDERS & BEHRENDT BOCHUM | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1319110 |
| DESCRIPTION | EP2867531 |
| DESCRIPTION | WO2013012624 |
| EXAMINATION | WO2018202842 |
| INTERNATIONAL-SEARCH-REPORT | CN106639324 |
| INTERNATIONAL-SEARCH-REPORT | CN204728708U |
| INTERNATIONAL-SEARCH-REPORT | JP2015221992 |
| INTERNATIONAL-SEARCH-REPORT | US2013295338 |
| INTERNATIONAL-SEARCH-REPORT | WO2015065936 |
| OPPOSITION | CN106639324 |
| OPPOSITION | CN204728708U |
| OPPOSITION | DE10060077 |
| OPPOSITION | DE102017110586 |
| OPPOSITION | DE10240180 |
| OPPOSITION | US2013295338 |
| OPPOSITION | WO2015065936 |
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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OPPO
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OPPO
Mar 12, 2025
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OPPO
Mar 12, 2025
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Mar 12, 2025
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Mar 12, 2025
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OPPO
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OPPO
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OPPO
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Decision to grant a European patent
Search/Exam
Dec 23, 2022
(Electronic) Receipt
Search/Exam
Dec 23, 2022
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English translation of the claims
Search/Exam
Dec 23, 2022
Filing of the translations of the claims
Search/Exam
Dec 23, 2022
French translation of claims
Search/Exam
Dec 23, 2022
Letter accompanying subsequently filed items
Search/Exam
Oct 10, 2022
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Intention to grant (signatures)
Search/Exam
Oct 10, 2022
Text intended for grant (clean copy)
Search/Exam
Oct 10, 2022
Aug 30, 2022
Examination started
Search/Exam
Jul 20, 2022
(Electronic) Receipt
Search/Exam
Jul 20, 2022
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Letter accompanying subsequently filed items
Search/Exam
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Information regarding early processing
Search/Exam
Aug 9, 2021
(Electronic) Receipt
Search/Exam
Aug 9, 2021
Request for entry into the European phase
Search/Exam
Aug 6, 2021
Information on entry into European phase
Search/Exam
Jun 10, 2021
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Notification of election of EPO
Search/Exam
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PCT demand form
PCT2
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Copy of the international search report
Search/Exam
Oct 1, 2020
Published international application - A1
Search/Exam
Apr 16, 2020
Mar 31, 2020
Mar 25, 2020
(Electronic) Receipt
PCTRO
Mar 25, 2020
Abstract
PCTRO
Mar 25, 2020
Claims
PCTRO
Mar 25, 2020
Description
PCTRO
Mar 25, 2020
Mar 25, 2020
Drawings
PCTRO
Mar 25, 2020