The weekly litigation news digest is live. Subscribe now
The patent EP3335434 was granted to Widex on Aug 4, 2021. The application was filed on Aug 14, 2015 under application number EP15757456A. 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 |
|---|---|---|---|
| GN HEARING | May 4, 2022 | GN STORE NORD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO2005125280 |
| INTERNATIONAL-SEARCH-REPORT | EP1843634 |
| INTERNATIONAL-SEARCH-REPORT | EP2227041 |
| INTERNATIONAL-SEARCH-REPORT | WO2011128462 |
| OPPOSITION | US2008056518 |
| OPPOSITION | US2013202138 |
| OPPOSITION | US8243938 |
| OPPOSITION | US8265288 |
| OPPOSITION | US8498941 |
| OPPOSITION | US8654986 |
| OPPOSITION | WO2005125280 |
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
Get instant alerts for new documents
Oct 9, 2025
Oct 9, 2025
Oct 9, 2025
Aug 27, 2025
Refund of fees
Appeal
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Aug 18, 2025
Aug 18, 2025
Aug 12, 2025
Aug 7, 2025
(Electronic) Receipt
Appeal
Aug 7, 2025
Aug 7, 2025
Jul 23, 2025
Jul 18, 2025
(Electronic) Receipt
Appeal
Jul 18, 2025
Jul 18, 2025
Jun 25, 2025
Jun 19, 2025
(Electronic) Receipt
Appeal
Jun 19, 2025
Jun 19, 2025
May 27, 2025
May 27, 2025
May 27, 2025
Mar 12, 2025
Mar 12, 2025
Jan 24, 2025
Jan 24, 2025
Jan 21, 2025
Nov 14, 2024
Nov 8, 2024
(Electronic) Receipt
Appeal
Nov 8, 2024
Nov 8, 2024
Jul 16, 2024
Jul 16, 2024
Jul 11, 2024
(Electronic) Receipt
Appeal
Jul 11, 2024
Jul 11, 2024
Reply to appeal
Appeal
Jul 10, 2024
(Electronic) Receipt
Appeal
Jul 10, 2024
Jul 10, 2024
Reply to appeal
Appeal
Mar 11, 2024
Mar 11, 2024
Mar 4, 2024
(Electronic) Receipt
Appeal
Mar 4, 2024
(Electronic) Receipt
Appeal
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Jan 4, 2024
Jan 4, 2024
Dec 21, 2023
(Electronic) Receipt
Appeal
Dec 21, 2023
Dec 21, 2023
Notice of appeal
Appeal
Dec 14, 2023
Dec 14, 2023
Dec 8, 2023
(Electronic) Receipt
Appeal
Dec 8, 2023
Notice of appeal
Appeal
Dec 8, 2023
Notice of appeal
Appeal
Dec 7, 2023
Dec 7, 2023
Dec 7, 2023
Dec 1, 2023
Dec 1, 2023
Dec 1, 2023
Oct 27, 2023
Oct 27, 2023
Oct 27, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Means of redress
OPPO
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 25, 2023
Oct 18, 2023
Sep 27, 2023
Sep 6, 2023
Sep 1, 2023
Sep 1, 2023
Sep 1, 2023
Aug 24, 2023
Aug 3, 2023
Aug 2, 2023
Aug 2, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 26, 2023
Jul 7, 2023
Jul 7, 2023
Jul 7, 2023
Dec 20, 2022
Dec 20, 2022
Dec 20, 2022
Dec 15, 2022
Dec 15, 2022
Dec 15, 2022
Dec 14, 2022
Dec 14, 2022
Dec 14, 2022
Dec 14, 2022
Dec 14, 2022
Dec 14, 2022
Dec 14, 2022
Oct 5, 2022
Oct 5, 2022
Oct 4, 2022
Sep 28, 2022
Sep 28, 2022
Sep 28, 2022
May 18, 2022
May 18, 2022
May 10, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
May 4, 2022
Aug 17, 2021
Jul 8, 2021
Decision to grant a European patent
Search/Exam
Jun 24, 2021
(Electronic) Receipt
Search/Exam
Jun 24, 2021
Filing of the translations of the claims
Search/Exam
Jun 24, 2021
French translation of claims
Search/Exam
Jun 24, 2021
German translation of the claims
Search/Exam
Jun 24, 2021
Letter accompanying subsequently filed items
Search/Exam
May 28, 2021
May 28, 2021
May 25, 2021
May 10, 2021
May 10, 2021
May 10, 2021
Intention to grant (signatures)
Search/Exam
May 10, 2021
Text intended for grant (clean copy)
Search/Exam
May 10, 2021
Apr 20, 2021
Apr 13, 2021
Apr 9, 2021
Mar 19, 2021
(Electronic) Receipt
Search/Exam
Mar 19, 2021
Amended claims with annotations
Search/Exam
Mar 19, 2021
Amended claims with annotations
Search/Exam
Mar 19, 2021
Claims
Search/Exam
Mar 19, 2021
Claims
Search/Exam
Mar 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 19, 2021
Oct 13, 2020
Advice of delivery
Search/Exam
Oct 9, 2020
Acknowledgement of a document
Search/Exam
Oct 9, 2020
Annex to the communication
Search/Exam
Oct 9, 2020
Summons to attend oral proceedings
Search/Exam
Sep 28, 2020
Sep 21, 2020
Sep 18, 2020
Sep 15, 2020
(Electronic) Receipt
Search/Exam
Sep 15, 2020
Amended claims with annotations
Search/Exam
Sep 15, 2020
Amended claims with annotations
Search/Exam
Sep 15, 2020
Amended claims with annotations
Search/Exam
Sep 15, 2020
Claims
Search/Exam
Sep 15, 2020
Claims
Search/Exam
Sep 15, 2020
Claims
Search/Exam
Sep 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 15, 2020
Mar 12, 2020
Advice of delivery
Search/Exam
Mar 2, 2020
Acknowledgement of a document
Search/Exam
Mar 2, 2020
Annex to the communication
Search/Exam
Mar 2, 2020
Summons to attend oral proceedings
Search/Exam
Oct 15, 2019
(Electronic) Receipt
Search/Exam
Oct 15, 2019
Amended claims with annotations
Search/Exam
Oct 15, 2019
Amended description with annotations
Search/Exam
Oct 15, 2019
Claims
Search/Exam
Oct 15, 2019
Description
Search/Exam
Oct 15, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 15, 2019
Jun 18, 2019
Annex to the communication
Search/Exam
Jun 18, 2019
Communication from the Examining Division
Search/Exam
Jun 11, 2019
Examination started
Search/Exam
May 24, 2018
Mar 23, 2018
Mar 21, 2018
Communication to designated inventor
Search/Exam
Mar 21, 2018
Communication to designated inventor
Search/Exam
Mar 6, 2018
Mar 5, 2018
Feb 26, 2018
Information regarding early processing
Search/Exam
Feb 7, 2018
(Electronic) Receipt
Search/Exam
Feb 7, 2018
Feb 7, 2018
Amended claims with annotations
Search/Exam
Feb 7, 2018
Feb 7, 2018
Amended description with annotations
Search/Exam
Feb 7, 2018
Amendments received before examination
Search/Exam
Feb 7, 2018
Request for entry into the European phase
Search/Exam
Jan 4, 2018
Information on entry into European phase
Search/Exam
Feb 23, 2017
Copy of the international search report
Search/Exam
Feb 23, 2017
Published international application - A1
Search/Exam
Apr 4, 2016
ISR: cited documents
PCTISA
Apr 1, 2016
Apr 1, 2016
Apr 1, 2016
Sep 15, 2015
Sep 14, 2015
Sep 11, 2015
Aug 14, 2015
(Electronic) Receipt
PCTRO
Aug 14, 2015
Abstract
PCTRO
Aug 14, 2015
Claims
PCTRO
Aug 14, 2015
Description
PCTRO
Aug 14, 2015
Aug 14, 2015
Drawings
PCTRO
Aug 14, 2015