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The patent EP3805325 was granted to DAW on Nov 27, 2024. The application was filed on Dec 7, 2016 under application number EP20190448A. 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 |
|---|---|---|---|
| LS | Aug 25, 2025 | LS MP VON PUTTKAMER BERNGRUBER LOTH SPUHLER | ADMISSIBLE |
| EWALD DORKEN | Aug 20, 2025 | VON ROHR PATENTANWALTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO2017144694 |
| OPPOSITION | AT384319B |
| OPPOSITION | AU2007240216 |
| OPPOSITION | CN102372949B |
| OPPOSITION | DE102005000824 |
| OPPOSITION | DE102006002800 |
| OPPOSITION | DE102006021178 |
| OPPOSITION | DE102007011553 |
| OPPOSITION | DE102014013455 |
| OPPOSITION | EP1236773 |
| OPPOSITION | EP1491600 |
| OPPOSITION | EP1990366 |
| OPPOSITION | EP2457961 |
| OPPOSITION | EP2589579 |
| OPPOSITION | EP3275952 |
| OPPOSITION | WO0063313 |
| OPPOSITION | WO2005058992 |
| OPPOSITION | WO2015130501 |
| OPPOSITION | WO2017144694 |
| SEARCH | DE102007011553 |
| SEARCH | EP1491600 |
| SEARCH | EP1990366 |
| SEARCH | WO0063313 |
| SEARCH | WO2005058992 |
| SEARCH | WO2015130501 |
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 10, 2025
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Dec 10, 2024
Oct 31, 2024
Decision to grant a European patent
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Oct 23, 2024
(Electronic) Receipt
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Oct 23, 2024
Filing of the translations of the claims
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Oct 23, 2024
Letter accompanying subsequently filed items
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Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Intention to grant (signatures)
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Oct 22, 2024
Text intended for grant (clean copy)
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Oct 22, 2024
Oct 18, 2024
(Electronic) Receipt
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Oct 18, 2024
Amended claims with annotations
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Oct 18, 2024
Oct 18, 2024
Claims
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Oct 18, 2024
Filing of the translations of the claims
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Oct 18, 2024
Letter accompanying subsequently filed items
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Sep 24, 2024
Annex to the communication
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Sep 24, 2024
Consultation by telephone/in person
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Sep 24, 2024
Jun 18, 2024
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Jun 18, 2024
Intention to grant (signatures)
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Jun 18, 2024
Text intended for grant (clean copy)
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Jun 18, 2024
May 31, 2024
(Electronic) Receipt
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May 31, 2024
Amended claims with annotations
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May 31, 2024
Claims
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May 31, 2024
English translation of the claims
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May 31, 2024
French translation of claims
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May 31, 2024
Letter accompanying subsequently filed items
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May 31, 2024
Jan 31, 2024
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Jan 31, 2024
Jan 31, 2024
Intention to grant (signatures)
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Jan 31, 2024
Text intended for grant (clean copy)
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Jan 31, 2024
Oct 6, 2023
(Electronic) Receipt
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Oct 6, 2023
Letter accompanying subsequently filed items
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Oct 6, 2023
Jul 31, 2023
Jul 26, 2023
(Electronic) Receipt
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Jul 26, 2023
Letter accompanying subsequently filed items
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Jul 26, 2023
Mar 29, 2023
Annex to the communication
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Mar 29, 2023
Communication from the Examining Division
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Jan 4, 2023
(Electronic) Receipt
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Jan 4, 2023
Amended description with annotations
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Jan 4, 2023
Description
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Jan 4, 2023
Letter accompanying subsequently filed items
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Jan 4, 2023
Oct 4, 2022
Annex to the communication
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Oct 4, 2022
Communication from the Examining Division
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Jul 13, 2022
Jul 12, 2022
(Electronic) Receipt
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Jul 12, 2022
Amended claims with annotations
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Jul 12, 2022
Amended claims with annotations
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Jul 12, 2022
Amended claims with annotations
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Jul 12, 2022
Amended claims with annotations
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Jul 12, 2022
Amended description with annotations
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Jul 12, 2022
Claims
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Jul 12, 2022
Claims
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Jul 12, 2022
Claims
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Jul 12, 2022
Claims
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Jul 12, 2022
Description
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Jul 12, 2022
Letter accompanying subsequently filed items
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Jul 12, 2022
Jul 12, 2022
Jul 7, 2022
(Electronic) Receipt
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Jul 7, 2022
Letter accompanying subsequently filed items
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Jul 7, 2022
Feb 25, 2022
Annex to the communication
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Feb 25, 2022
Communication from the Examining Division
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Feb 15, 2022
Examination started
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Oct 14, 2021
(Electronic) Receipt
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Oct 14, 2021
Oct 14, 2021
Amended claims with annotations
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Oct 14, 2021
Amendments received before examination
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Oct 14, 2021
Letter accompanying subsequently filed items
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Apr 19, 2021
Mar 17, 2021
Notification of forthcoming publication
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Mar 16, 2021
Refund of fees
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Feb 24, 2021
Feb 24, 2021
European search opinion
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Feb 24, 2021
European search report
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Feb 24, 2021
Information on Search Strategy
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Feb 15, 2021
Feb 10, 2021
Communication to designated inventor
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Feb 10, 2021
Communication to designated inventor
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Feb 5, 2021
(Electronic) Receipt
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Feb 5, 2021
Letter accompanying subsequently filed items
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Feb 5, 2021
Letter concerning the inventor
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Nov 20, 2020
Nov 17, 2020
Nov 13, 2020
Letter which had not been notified
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Nov 11, 2020
Letter which had not been notified
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Nov 5, 2020
(Electronic) Receipt
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Nov 5, 2020
Letter accompanying subsequently filed items
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Oct 20, 2020
Invitation to pay claims fees
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Oct 19, 2020
Communication to designated inventor
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Aug 26, 2020
(Electronic) Receipt
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Aug 26, 2020
Letter concerning fees and payments
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Aug 11, 2020
Abstract
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Aug 11, 2020
Aug 11, 2020
Claims
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Aug 11, 2020
Description
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Aug 11, 2020
Designation of inventor
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Aug 11, 2020
Request for grant of a European patent
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