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The patent EP3420148 was granted to ACO Ahlmann on Aug 9, 2023. The application was filed on Feb 22, 2017 under application number EP17706745A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| HANS RINNINGER U SOHN | Feb 5, 2021 | OTTEN | ADMISSIBLE |
| HANS RINNINGER U SOHN | Feb 5, 2021 | RAVENSPAT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE202009017312U |
| DESCRIPTION | DE4128068 |
| INTERNATIONAL-SEARCH-REPORT | DE202009017312U |
| INTERNATIONAL-SEARCH-REPORT | EP0542701 |
| INTERNATIONAL-SEARCH-REPORT | US5718537 |
| OPPOSITION | EP1884602 |
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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Jul 13, 2023
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Mar 22, 2023
Mar 21, 2023
Refund of fees
Search/Exam
Mar 20, 2023
Letter accompanying subsequently filed items
Search/Exam
Mar 20, 2023
Mar 13, 2023
Mar 13, 2023
Mar 8, 2023
(Electronic) Receipt
Appeal
Mar 8, 2023
Mar 8, 2023
Mar 8, 2023
Withdrawal of an appeal
Appeal
Feb 24, 2023
Refund of fees
Search/Exam
Feb 22, 2023
Feb 16, 2023
(Electronic) Receipt
Appeal
Feb 16, 2023
Feb 16, 2023
Withdrawal of an appeal
Appeal
Jan 10, 2023
Jan 10, 2023
Dec 28, 2022
(Electronic) Receipt
Appeal
Dec 28, 2022
Dec 28, 2022
Notice of appeal
Appeal
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 23, 2022
Dec 20, 2022
(Electronic) Receipt
Appeal
Dec 20, 2022
Dec 20, 2022
Notice of appeal
Appeal
Nov 17, 2022
Nov 3, 2022
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Means of redress
OPPO
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Claims
OPPO
Sep 8, 2022
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May 18, 2020
Apr 9, 2020
Decision to grant a European patent
Search/Exam
Mar 30, 2020
(Electronic) Receipt
Search/Exam
Mar 30, 2020
English translation of the claims
Search/Exam
Mar 30, 2020
Filing of the translations of the claims
Search/Exam
Mar 30, 2020
French translation of claims
Search/Exam
Mar 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 22, 2019
Nov 22, 2019
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Intention to grant (signatures)
Search/Exam
Nov 22, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 22, 2019
Jun 17, 2019
Examination started
Search/Exam
Mar 7, 2019
(Electronic) Receipt
Search/Exam
Mar 7, 2019
Mar 7, 2019
Amended claims with annotations
Search/Exam
Mar 7, 2019
Mar 7, 2019
Amended description with annotations
Search/Exam
Mar 7, 2019
Amendments received before examination
Search/Exam
Mar 7, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 5, 2018
Oct 18, 2018
Oct 16, 2018
Communication to designated inventor
Search/Exam
Oct 16, 2018
Communication to designated inventor
Search/Exam
Sep 21, 2018
(Electronic) Receipt
Search/Exam
Sep 21, 2018
Request for entry into the European phase
Search/Exam
Sep 12, 2018
Jul 4, 2018
Information on entry into European phase
Search/Exam
Sep 22, 2017
Aug 31, 2017
Copy of the international search report
Search/Exam
Aug 31, 2017
Copy of the international search report
Search/Exam
Aug 31, 2017
Published international application - A1
Search/Exam
Jun 12, 2017
Jun 1, 2017
(Electronic) Receipt
PCTISA
Jun 1, 2017
Jun 1, 2017
Apr 26, 2017
ISR: cited documents
PCTISA
Apr 26, 2017
Apr 24, 2017
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Apr 3, 2017
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Mar 2, 2017
Feb 27, 2017
Feb 22, 2017
(Electronic) Receipt
PCTRO
Feb 22, 2017
Abstract
PCTRO
Feb 22, 2017
Claims
PCTRO
Feb 22, 2017
Description
PCTRO
Feb 22, 2017
Feb 22, 2017
Drawings
PCTRO
Feb 22, 2017