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The patent EP3671740 was granted to GN Audio on Sep 20, 2023. The application was filed on Dec 19, 2019 under application number EP19217894A. 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 |
|---|---|---|---|
| OTICON | Jun 20, 2024 | COHAUSZ & FLORACK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US9241228 |
| DESCRIPTION | US9721582 |
| DESCRIPTION | US9813833 |
| OPPOSITION | US2018167754 |
| OPPOSITION | US2018270565 |
| OPPOSITION | US9721582 |
| SEARCH | EP2738762 |
| SEARCH | US2013170666 |
| SEARCH | US9721582 |
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.
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Dec 5, 2023
(Electronic) Receipt
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Dec 5, 2023
Letter accompanying subsequently filed items
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Dec 5, 2023
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Aug 24, 2023
Decision to grant a European patent
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Aug 15, 2023
(Electronic) Receipt
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Aug 15, 2023
Filing of the translations of the claims
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Aug 15, 2023
French translation of claims
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Aug 15, 2023
German translation of the claims
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Aug 15, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jun 22, 2023
Text intended for grant (clean copy)
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Jun 22, 2023
May 5, 2022
(Electronic) Receipt
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May 5, 2022
Amended claims with annotations
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May 5, 2022
Amended description with annotations
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May 5, 2022
Claims
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May 5, 2022
Description
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May 5, 2022
Letter accompanying subsequently filed items
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May 5, 2022
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Annex to the communication
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Jan 21, 2022
Communication from the Examining Division
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Jan 12, 2022
Examination started
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Jun 7, 2021
Annexes in respect of a client data request
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Jun 7, 2021
Annexes in respect of a client data request
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Jan 11, 2021
(Electronic) Receipt
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Jan 11, 2021
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Amended claims with annotations
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Jan 11, 2021
Amendments received before examination
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Jan 11, 2021
Letter accompanying subsequently filed items
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Jun 29, 2020
Jun 2, 2020
Refund of fees
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May 27, 2020
Notification of forthcoming publication
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May 19, 2020
May 19, 2020
European search opinion
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May 19, 2020
European search report
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May 19, 2020
Information on Search Strategy
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May 14, 2020
Priority search results copy provided by EPO
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May 7, 2020
Search started
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Feb 11, 2020
Communication to designated inventor
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Jan 10, 2020
Dec 23, 2019
Dec 19, 2019
Abstract
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Dec 19, 2019
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Claims
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Dec 19, 2019
Description
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Dec 19, 2019
Designation of inventor
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Dec 19, 2019
Drawings
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Dec 19, 2019
Request for grant of a European patent
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