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The patent EP3847321 was granted to Putzmeister Engineering on May 31, 2023. The application was filed on Aug 13, 2019 under application number EP19755333A. 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 | Feb 28, 2024 | SCHNEIDERS & BEHRENDT BOCHUM | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US6022048 |
| INTERNATIONAL-SEARCH-REPORT | CN202969950U |
| INTERNATIONAL-SEARCH-REPORT | DE102010046615 |
| INTERNATIONAL-SEARCH-REPORT | EP1713159 |
| INTERNATIONAL-SEARCH-REPORT | EP3023212 |
| OPPOSITION | CN104499718 |
| OPPOSITION | CN108382180 |
| OPPOSITION | CN201326277Y |
| OPPOSITION | CN202131775U |
| OPPOSITION | CN202969950U |
| OPPOSITION | CN204472590U |
| OPPOSITION | DE102015122591 |
| OPPOSITION | EP3246187 |
| OPPOSITION | JP2006136072 |
| OPPOSITION | US2009018716 |
| OTHER | CN202969950U |
| OTHER | DE102015122591 |
| OTHER | DE19635200 |
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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Description
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Authorisation
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Jun 14, 2023
May 8, 2023
Decision to grant a European patent
Search/Exam
Apr 14, 2023
(Electronic) Receipt
Search/Exam
Apr 14, 2023
English translation of the claims
Search/Exam
Apr 14, 2023
Filing of the translations of the claims
Search/Exam
Apr 14, 2023
French translation of claims
Search/Exam
Apr 14, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 9, 2022
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Intention to grant (signatures)
Search/Exam
Dec 9, 2022
Text intended for grant (clean copy)
Search/Exam
Dec 9, 2022
Sep 8, 2022
Sep 8, 2022
Sep 1, 2022
Observations by third parties
Search/Exam
Aug 24, 2022
(Electronic) Receipt
Search/Exam
Aug 24, 2022
Amended claims with annotations
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Aug 24, 2022
Amended claims with annotations
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Aug 24, 2022
Amended description with annotations
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Aug 24, 2022
Amended description with annotations
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Aug 24, 2022
Claims
Search/Exam
Aug 24, 2022
Claims
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Aug 24, 2022
Description
Search/Exam
Aug 24, 2022
Description
Search/Exam
Aug 24, 2022
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2022
Apr 21, 2022
Annex to the communication
Search/Exam
Apr 21, 2022
Communication from the Examining Division
Search/Exam
Apr 4, 2022
(Electronic) Receipt
Search/Exam
Apr 4, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 4, 2022
Mar 22, 2022
Annex to the communication
Search/Exam
Mar 22, 2022
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(Electronic) Receipt
Search/Exam
Mar 21, 2022
Amended claims with annotations
Search/Exam
Mar 21, 2022
Amended description with annotations
Search/Exam
Mar 21, 2022
Claims
Search/Exam
Mar 21, 2022
Description
Search/Exam
Mar 21, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2022
Mar 10, 2022
Examination started
Search/Exam
Jan 7, 2022
Jan 7, 2022
Dec 17, 2021
Observations by third parties
Search/Exam
Dec 17, 2021
Patent document filed by a Third party
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Dec 17, 2021
Patent document filed by a Third party
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Oct 20, 2021
(Electronic) Receipt
Search/Exam
Oct 20, 2021
Oct 20, 2021
Amended claims with annotations
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Oct 20, 2021
Oct 20, 2021
Amended description with annotations
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Oct 20, 2021
Amendments received before examination
Search/Exam
Oct 20, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 16, 2021
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Feb 26, 2021
(Electronic) Receipt
Search/Exam
Feb 26, 2021
Priority search results
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Feb 26, 2021
Request for entry into the European phase
Search/Exam
Jan 15, 2021
Information on entry into European phase
Search/Exam
Mar 31, 2020
Mar 12, 2020
Copy of the international search report
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Mar 12, 2020
Published international application - A1
Search/Exam
Oct 25, 2019
(Electronic) Receipt
PCTRO
Oct 25, 2019
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Aug 28, 2019
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Aug 13, 2019
(Electronic) Receipt
PCTRO
Aug 13, 2019
Abstract
PCTRO
Aug 13, 2019
Claims
PCTRO
Aug 13, 2019
Description
PCTRO
Aug 13, 2019
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Drawings
PCTRO
Aug 13, 2019