The patent EP3847937 was granted to Branofilter on May 4, 2022. The application was originally filed on Jan 11, 2021 under application number EP21150938A. 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.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10243341 |
| DESCRIPTION | DE19959513 |
| DESCRIPTION | DE202007014263U |
| DESCRIPTION | DE69811473T |
| DESCRIPTION | DE8132813U |
| OPPOSITION | DE102008046200 |
| OPPOSITION | DE102012010079 |
| OPPOSITION | DE102019107395 |
| OPPOSITION | DE102019123149 |
| OPPOSITION | DE1943526U |
| OPPOSITION | DE202005016309U |
| OPPOSITION | DE202008006904U |
| OPPOSITION | DE2140894 |
| OPPOSITION | DE69811473T |
| OPPOSITION | DE7034330U |
| OPPOSITION | DE8801638U |
| OPPOSITION | DE929810 |
| OPPOSITION | EP1059056 |
| OPPOSITION | EP1683460 |
| OPPOSITION | EP2772173 |
| OPPOSITION | EP3821776 |
| OPPOSITION | EP3821777 |
| OPPOSITION | GB242691 |
| OPPOSITION | JP2006314753 |
| OPPOSITION | US2007214755 |
| OPPOSITION | US2159116 |
| OPPOSITION | US2225389 |
| OPPOSITION | US2752086 |
| OPPOSITION | US4299605 |
| OPPOSITION | WO2011113545 |
| SEARCH | DE202005000917U |
| SEARCH | DE3404058 |
| SEARCH | EP0867144 |
Get a free citation report including examiner, opposition, and international search citations.
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Date
Description
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Jul 29, 2025
Jul 24, 2025
(Electronic) Receipt
Appeal
Jul 24, 2025
Jul 24, 2025
Reply to appeal
Appeal
Apr 11, 2025
Apr 8, 2025
(Electronic) Receipt
Appeal
Apr 8, 2025
Apr 8, 2025
Feb 20, 2025
Feb 20, 2025
Feb 13, 2025
(Electronic) Receipt
Appeal
Feb 13, 2025
Feb 13, 2025
Notice of appeal
Appeal
Dec 17, 2024
Dec 17, 2024
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Means of redress
OPPO
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Description
OPPO
Jul 18, 2024
Description
OPPO
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Description
OPPO
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Description
OPPO
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Description
OPPO
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OPPO
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May 17, 2022
Apr 7, 2022
Decision to grant a European patent
Search/Exam
Mar 29, 2022
(Electronic) Receipt
Search/Exam
Mar 29, 2022
English translation of the claims
Search/Exam
Mar 29, 2022
Filing of the translations of the claims
Search/Exam
Mar 29, 2022
French translation of claims
Search/Exam
Mar 29, 2022
Letter accompanying subsequently filed items
Search/Exam
Feb 16, 2022
Feb 16, 2022
Feb 16, 2022
Intention to grant (signatures)
Search/Exam
Feb 16, 2022
Text intended for grant (clean copy)
Search/Exam
Feb 16, 2022
Dec 22, 2021
(Electronic) Receipt
Search/Exam
Dec 22, 2021
Amended description with annotations
Search/Exam
Dec 22, 2021
Description
Search/Exam
Dec 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2021
Nov 23, 2021
Nov 23, 2021
Nov 23, 2021
Intention to grant (signatures)
Search/Exam
Nov 23, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 23, 2021
Nov 2, 2021
Examination started
Search/Exam
Jul 19, 2021
Jul 16, 2021
(Electronic) Receipt
Search/Exam
Jul 16, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 16, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Jun 16, 2021
Notification of forthcoming publication
Search/Exam
Jun 4, 2021
Jun 4, 2021
European search opinion
Search/Exam
Jun 4, 2021
European search report
Search/Exam
Jun 4, 2021
Information on Search Strategy
Search/Exam
May 20, 2021
Search started
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Mar 5, 2021
Communication to designated inventor
Search/Exam
Jan 29, 2021
Letter concerning the priority
Search/Exam
Jan 29, 2021
Priority document
Search/Exam
Jan 11, 2021
Abstract
Search/Exam
Jan 11, 2021
Jan 11, 2021
Claims
Search/Exam
Jan 11, 2021
Description
Search/Exam
Jan 11, 2021
Designation of inventor
Search/Exam
Jan 11, 2021
Drawings
Search/Exam
Jan 11, 2021
Priority search results
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Jan 11, 2021
Request for grant of a European patent
Search/Exam