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The patent EP3343955 was granted to Oticon on Jul 6, 2022. The application was filed on Dec 22, 2017 under application number EP17210257A. 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 |
|---|---|---|---|
| SIVANTOS PTE | Apr 6, 2023 | FDST PATENTANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | EP1496530 |
| OPPOSITION | EP1531649 |
| OPPOSITION | EP1768449 |
| OPPOSITION | EP2076065 |
| OPPOSITION | EP2088804 |
| OPPOSITION | EP2227040 |
| OPPOSITION | EP2456235 |
| OPPOSITION | EP2750409 |
| OPPOSITION | US2006227989 |
| OPPOSITION | US2010321269 |
| OPPOSITION | US2011243357 |
| OPPOSITION | US2014328507 |
| OPPOSITION | US2015296312 |
| OPPOSITION | US2016373867 |
| OPPOSITION | WO2009049646 |
| OPPOSITION | WO2015127972 |
| SEARCH | EP2088804 |
| SEARCH | JPS6298594 |
| SEARCH | US2010186995 |
| SEARCH | US2014328507 |
| SEARCH | US2016373867 |
| SEARCH | WO2010033932 |
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 30, 2025
Sep 30, 2025
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Mar 17, 2025
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Mar 11, 2025
(Electronic) Receipt
Appeal
Mar 11, 2025
(Electronic) Receipt
Appeal
Mar 11, 2025
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Reply to appeal
Appeal
Mar 11, 2025
Reply to appeal
Appeal
Nov 11, 2024
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Nov 5, 2024
(Electronic) Receipt
Appeal
Nov 5, 2024
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Nov 4, 2024
(Electronic) Receipt
Appeal
Nov 4, 2024
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Sep 5, 2024
(Electronic) Receipt
Appeal
Sep 5, 2024
(Electronic) Receipt
Appeal
Sep 5, 2024
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Notice of appeal
Appeal
Sep 5, 2024
Notice of appeal
Appeal
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Means of redress
OPPO
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Jul 19, 2022
Jun 10, 2022
Decision to grant a European patent
Search/Exam
May 30, 2022
(Electronic) Receipt
Search/Exam
May 30, 2022
Filing of the translations of the claims
Search/Exam
May 30, 2022
French translation of claims
Search/Exam
May 30, 2022
German translation of the claims
Search/Exam
May 30, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 28, 2022
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Intention to grant (signatures)
Search/Exam
Jan 28, 2022
Text intended for grant (clean copy)
Search/Exam
Jan 28, 2022
Jan 25, 2022
Jul 29, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 29, 2021
Dec 28, 2020
(Electronic) Receipt
Search/Exam
Dec 28, 2020
Amended claims with annotations
Search/Exam
Dec 28, 2020
Claims
Search/Exam
Dec 28, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 28, 2020
Aug 26, 2020
Annex to the communication
Search/Exam
Aug 26, 2020
Communication from the Examining Division
Search/Exam
Aug 14, 2020
Examination started
Search/Exam
Jan 24, 2020
Document concerning representation
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Jan 4, 2019
(Electronic) Receipt
Search/Exam
Jan 4, 2019
Jan 4, 2019
Amended claims with annotations
Search/Exam
Jan 4, 2019
Jan 4, 2019
Amendments received before examination
Search/Exam
Jan 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 9, 2018
Jun 6, 2018
Notification of forthcoming publication
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
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Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Mar 16, 2018
Communication to designated inventor
Search/Exam
Feb 26, 2018
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European search opinion
Search/Exam
Feb 26, 2018
European search report
Search/Exam
Feb 26, 2018
Information on Search Strategy
Search/Exam
Feb 22, 2018
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Priority search results copy provided by EPO
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Feb 21, 2018
Priority search results copy provided by EPO
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Feb 21, 2018
Priority search results copy provided by EPO
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Feb 21, 2018
Priority search results copy provided by EPO
Search/Exam
Feb 21, 2018
Priority search results copy provided by EPO
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Jan 31, 2018
Search started
Search/Exam
Dec 22, 2017
Abstract
Search/Exam
Dec 22, 2017
Dec 22, 2017
Claims
Search/Exam
Dec 22, 2017
Description
Search/Exam
Dec 22, 2017
Designation of inventor
Search/Exam
Dec 22, 2017
Drawings
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Dec 22, 2017
Request for grant of a European patent
Search/Exam