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The patent EP3974664 was granted to BI Mirth on Jan 24, 2024. The application was filed on Sep 23, 2020 under application number EP20197713A. 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 |
|---|---|---|---|
| SCHWARZ & PARTNER PATENTANWALTE | Aug 27, 2024 | SCHWARZ & PARTNER PATENTANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | DE102017103526 |
| EXAMINATION | US2263137 |
| OPPOSITION | CN208845543U |
| OPPOSITION | CN211550207U |
| OPPOSITION | EP0939235 |
| OPPOSITION | EP3330552 |
| OPPOSITION | EP3460263 |
| OPPOSITION | ES1070104U |
| OPPOSITION | TWM584843U |
| OPPOSITION | US2015010374 |
| OPPOSITION | US2018298934 |
| OPPOSITION | US2020271151 |
| OPPOSITION | US2263137 |
| OPPOSITION | WO2019016092 |
| OTHER | EP0939235 |
| OTHER | US2015010374 |
| OTHER | US2263137 |
| SEARCH | EP0939235 |
| SEARCH | US2015010374 |
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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Dec 17, 2025
Dec 17, 2025
Dec 10, 2025
(Electronic) Receipt
Appeal
Dec 10, 2025
Notice of appeal
Appeal
Dec 10, 2025
Notice of appeal
Appeal
Oct 15, 2025
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Means of redress
OPPO
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Authorisation
OPPO
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Letter which had not been notified
Search/Exam
Jan 19, 2024
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Dec 18, 2023
(Electronic) Receipt
Search/Exam
Dec 18, 2023
Letter accompanying subsequently filed items
Search/Exam
Dec 18, 2023
Request for correction of the publication
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Dec 12, 2023
Nov 3, 2023
Decision to grant a European patent
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Oct 16, 2023
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(Electronic) Receipt
Search/Exam
Aug 22, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 22, 2023
Matter concerning the application
Search/Exam
Aug 15, 2023
(Electronic) Receipt
Search/Exam
Aug 15, 2023
Filing of the translations of the claims
Search/Exam
Aug 15, 2023
French translation of claims
Search/Exam
Aug 15, 2023
German translation of the claims
Search/Exam
Aug 15, 2023
Letter accompanying subsequently filed items
Search/Exam
Jun 1, 2023
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Intention to grant (signatures)
Search/Exam
Jun 1, 2023
Text intended for grant (clean copy)
Search/Exam
Jun 1, 2023
May 8, 2023
Examination started
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Feb 17, 2023
Feb 13, 2023
(Electronic) Receipt
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Feb 13, 2023
Feb 13, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2023
Matter concerning the application
Search/Exam
Feb 13, 2023
Feb 7, 2023
(Electronic) Receipt
Search/Exam
Feb 7, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 7, 2023
Non-patent literature filed by a third party
Search/Exam
Feb 7, 2023
Non-patent literature filed by a third party
Search/Exam
Feb 7, 2023
Non-patent literature filed by a third party
Search/Exam
Feb 7, 2023
Observations by third parties
Search/Exam
Feb 7, 2023
Patent document filed by a Third party
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Feb 7, 2023
Patent document filed by a Third party
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Feb 7, 2023
Patent document filed by a Third party
Search/Exam
Apr 4, 2022
Mar 2, 2022
Notification of forthcoming publication
Search/Exam
Dec 15, 2021
(Electronic) Receipt
Search/Exam
Dec 15, 2021
Dec 15, 2021
Amended claims with annotations
Search/Exam
Dec 15, 2021
Dec 15, 2021
Amended description with annotations
Search/Exam
Dec 15, 2021
Amendments received before examination
Search/Exam
Dec 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 15, 2021
Written request for examination
Search/Exam
Mar 11, 2021
Mar 11, 2021
European search opinion
Search/Exam
Mar 11, 2021
European search report
Search/Exam
Mar 11, 2021
Information on Search Strategy
Search/Exam
Feb 17, 2021
Search started
Search/Exam
Dec 14, 2020
Communication to designated inventor
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Sep 23, 2020
Abstract
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Sep 23, 2020
Sep 23, 2020
Claims
Search/Exam
Sep 23, 2020
Description
Search/Exam
Sep 23, 2020
Designation of inventor
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Sep 23, 2020
Drawings
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Sep 23, 2020
Request for grant of a European patent
Search/Exam