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The patent EP3854473 was granted to DAW on Jul 5, 2023. The application was filed on Jan 24, 2020 under application number EP20153505A. 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 |
|---|---|---|---|
| EWALD DORKEN | Dec 1, 2023 | VON ROHR PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
| WACHTERSHAUSER & HARTZ PATENTANWALTSPARTNERSCHAFT MBB BLODIG | Dec 1, 2023 | WACHTERSHAUSER & HARTZ PATENTANWALTSPARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP3395454 |
| OPPOSITION | CN110115955 |
| OPPOSITION | CN207618330U |
| OPPOSITION | CN209106014U |
| OPPOSITION | CN209549887U |
| OPPOSITION | DE202019004301U |
| OPPOSITION | DE2944869 |
| OPPOSITION | EP0813901 |
| OPPOSITION | EP1109678 |
| OPPOSITION | EP2661320 |
| OPPOSITION | EP3395454 |
| OPPOSITION | FI57537C |
| OPPOSITION | KR20130135675 |
| OPPOSITION | US2011174993 |
| OPPOSITION | US2016088868 |
| OPPOSITION | US2018368558 |
| OPPOSITION | WO2012093020 |
| OTHER | EP3395454 |
| SEARCH | EP2661320 |
| SEARCH | US2018368558 |
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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Dec 23, 2025
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(Electronic) Receipt
Appeal
Oct 31, 2025
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Reply to appeal
Appeal
Oct 30, 2025
(Electronic) Receipt
Appeal
Oct 30, 2025
(Electronic) Receipt
Appeal
Oct 30, 2025
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Reply to appeal
Appeal
Oct 30, 2025
Reply to appeal
Appeal
Oct 29, 2025
(Electronic) Receipt
Appeal
Oct 29, 2025
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Reply to appeal
Appeal
Jul 1, 2025
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Jun 26, 2025
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Apr 16, 2025
(Electronic) Receipt
Appeal
Apr 16, 2025
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Notice of appeal
Appeal
Apr 16, 2025
Notice of appeal
Appeal
Apr 16, 2025
Notice of appeal
Appeal
Apr 14, 2025
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(Electronic) Receipt
Appeal
Apr 10, 2025
Notice of appeal
Appeal
Feb 26, 2025
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Means of redress
OPPO
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(Electronic) Receipt
Search/Exam
May 31, 2023
Letter accompanying subsequently filed items
Search/Exam
May 31, 2023
Request for correction of the publication
Search/Exam
Mar 15, 2023
Feb 2, 2023
Decision to grant a European patent
Search/Exam
Dec 16, 2022
(Electronic) Receipt
Search/Exam
Dec 16, 2022
English translation of the claims
Search/Exam
Dec 16, 2022
Filing of the translations of the claims
Search/Exam
Dec 16, 2022
French translation of claims
Search/Exam
Dec 16, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 2, 2022
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Intention to grant (signatures)
Search/Exam
Nov 2, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 2, 2022
Sep 22, 2022
(Electronic) Receipt
Search/Exam
Sep 22, 2022
Amended claims with annotations
Search/Exam
Sep 22, 2022
Amended description with annotations
Search/Exam
Sep 22, 2022
Claims
Search/Exam
Sep 22, 2022
Description
Search/Exam
Sep 22, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 22, 2022
Sep 22, 2022
Translation of the claims
Search/Exam
Sep 22, 2022
Translation of the claims
Search/Exam
May 27, 2022
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Intention to grant (signatures)
Search/Exam
May 27, 2022
Text intended for grant (clean copy)
Search/Exam
May 27, 2022
Mar 31, 2022
Examination started
Search/Exam
Jan 25, 2022
(Electronic) Receipt
Search/Exam
Jan 25, 2022
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Amended claims with annotations
Search/Exam
Jan 25, 2022
Amendments received before examination
Search/Exam
Jan 25, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 11, 2021
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Nov 4, 2021
Non-patent literature filed by a third party
Search/Exam
Nov 4, 2021
Observations by third parties
Search/Exam
Aug 2, 2021
Jun 30, 2021
Notification of forthcoming publication
Search/Exam
May 18, 2021
(Electronic) Receipt
Search/Exam
May 18, 2021
Designation of inventor
Search/Exam
May 18, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 10, 2020
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European search opinion
Search/Exam
Aug 10, 2020
European search report
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Aug 10, 2020
Information on Search Strategy
Search/Exam
Aug 3, 2020
Modified abstract
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Jul 22, 2020
Search started
Search/Exam
Feb 13, 2020
Deficiency in designation of inventor
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Jan 24, 2020
Abstract
Search/Exam
Jan 24, 2020
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Claims
Search/Exam
Jan 24, 2020
Description
Search/Exam
Jan 24, 2020
Drawings
Appeal
Jan 24, 2020
Drawings
Search/Exam
Jan 24, 2020
Request for grant of a European patent
Search/Exam