The patent EP3429720 was granted to Eurofilters on Dec 11, 2019. The application was originally filed on Mar 13, 2017 under application number EP17709452A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
Get a free citation report including examiner, opposition, and international search citations.
Get Citation ReportThe 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
Sep 11, 2025
Sep 8, 2025
Sep 8, 2025
Sep 8, 2025
Sep 8, 2025
Sep 8, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Jul 7, 2025
Apr 22, 2025
Apr 16, 2025
Apr 16, 2025
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Jan 28, 2025
Jan 23, 2025
(Electronic) Receipt
Appeal
Jan 23, 2025
Jan 23, 2025
Dec 23, 2024
Dec 23, 2024
Dec 23, 2024
Dec 23, 2024
Dec 20, 2024
Dec 16, 2024
(Electronic) Receipt
Appeal
Dec 16, 2024
Dec 16, 2024
Aug 16, 2024
Aug 12, 2024
(Electronic) Receipt
Appeal
Aug 12, 2024
Aug 12, 2024
Jul 26, 2024
Jul 26, 2024
Jul 23, 2024
Apr 24, 2024
Apr 24, 2024
Apr 24, 2024
Apr 23, 2024
Apr 23, 2024
Apr 22, 2024
Apr 19, 2024
Apr 16, 2024
Apr 16, 2024
Apr 11, 2024
Sep 8, 2023
Sep 5, 2023
(Electronic) Receipt
Appeal
Sep 5, 2023
Sep 5, 2023
Reply to appeal
Appeal
May 4, 2023
Apr 29, 2023
Apr 26, 2023
(Electronic) Receipt
Appeal
Apr 26, 2023
Apr 26, 2023
Mar 7, 2023
Mar 7, 2023
Mar 1, 2023
(Electronic) Receipt
Appeal
Mar 1, 2023
Mar 1, 2023
Notice of appeal
Appeal
Dec 27, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Means of redress
OPPO
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Nov 8, 2022
Oct 21, 2022
Oct 14, 2022
Oct 14, 2022
Oct 14, 2022
Sep 16, 2022
Sep 12, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 8, 2022
Sep 2, 2022
Sep 2, 2022
Sep 2, 2022
Sep 2, 2022
Sep 2, 2022
Jul 1, 2022
Jul 1, 2022
May 20, 2021
May 17, 2021
May 12, 2021
May 12, 2021
May 12, 2021
May 12, 2021
May 12, 2021
May 10, 2021
Feb 12, 2021
Feb 5, 2021
Feb 5, 2021
Feb 5, 2021
Feb 5, 2021
Sep 25, 2020
Sep 25, 2020
Sep 16, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Dec 20, 2019
Nov 14, 2019
Decision to grant a European patent
Search/Exam
Oct 30, 2019
(Electronic) Receipt
Search/Exam
Oct 30, 2019
English translation of the claims
Search/Exam
Oct 30, 2019
French translation of claims
Search/Exam
Oct 30, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 18, 2019
Jul 18, 2019
Jul 18, 2019
Intention to grant (signatures)
Search/Exam
Jul 18, 2019
Text intended for grant (clean copy)
Search/Exam
Jul 18, 2019
Jun 24, 2019
Examination started
Search/Exam
May 3, 2019
(Electronic) Receipt
Search/Exam
May 3, 2019
May 3, 2019
Amended claims with annotations
Search/Exam
May 3, 2019
May 3, 2019
Amended description with annotations
Search/Exam
May 3, 2019
Amendments received before examination
Search/Exam
May 3, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2019
Oct 24, 2018
Oct 22, 2018
Communication to designated inventor
Search/Exam
Oct 22, 2018
Communication to designated inventor
Search/Exam
Oct 17, 2018
Priority search results copy provided by EPO
Search/Exam
Oct 17, 2018
Priority search results copy provided by EPO
Search/Exam
Oct 17, 2018
Priority search results copy provided by EPO
Search/Exam
Oct 3, 2018
Jul 18, 2018
Information regarding early processing
Search/Exam
Jul 12, 2018
(Electronic) Receipt
Search/Exam
Jul 12, 2018
Request for entry into the European phase
Search/Exam
Oct 10, 2017
Oct 10, 2017
Oct 10, 2017
Sep 21, 2017
Copy of the international search report
Search/Exam
Sep 21, 2017
Copy of the international search report
Search/Exam
Sep 21, 2017
Published international application - A1
Search/Exam
May 11, 2017
May 11, 2017
May 11, 2017
Mar 20, 2017
Mar 13, 2017
(Electronic) Receipt
PCTRO
Mar 13, 2017
Abstract
PCTRO
Mar 13, 2017
Claims
PCTRO
Mar 13, 2017
Description
PCTRO
Mar 13, 2017
Mar 13, 2017
Mar 13, 2017
Mar 13, 2017
Mar 13, 2017