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The patent EP3604873 was granted to Sisto Armaturen on Jul 9, 2025. The application was filed on Aug 3, 2018 under application number EP18187200A. 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 |
|---|---|---|---|
| GEMU GEBR MULLER APPARATEBAU KOMMANDITGESELLSCHAFT | Jan 28, 2022 | DREISS PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102013214304 |
| DESCRIPTION | DE102015210208 |
| DESCRIPTION | WO2012035291 |
| OPPOSITION | DE102009016429 |
| OPPOSITION | DE102013214304 |
| OPPOSITION | DE102015210204 |
| OPPOSITION | DE102015210210 |
| OPPOSITION | DE102016101782 |
| OPPOSITION | DE102016106818 |
| OPPOSITION | DE102017128229 |
| OPPOSITION | DE102018111383 |
| OPPOSITION | DE19810396 |
| OPPOSITION | DE4240561 |
| OPPOSITION | EP1854632 |
| OPPOSITION | EP2558381 |
| OPPOSITION | EP3203124 |
| OPPOSITION | EP3324084 |
| OPPOSITION | EP3382238 |
| OPPOSITION | EP3569905 |
| OPPOSITION | EP3604809 |
| OPPOSITION | US2010177993 |
| OPPOSITION | US6761063 |
| OPPOSITION | US8049627 |
| OPPOSITION | WO2005036039 |
| OPPOSITION | WO2010136198 |
| OPPOSITION | WO2014204322 |
| SEARCH | DE102013214304 |
| SEARCH | DE102015210210 |
| SEARCH | DE102016101782 |
| SEARCH | EP3324084 |
| SEARCH | WO2010136198 |
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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Jun 13, 2025
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Means of redress
OPPO
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Authorisation
OPPO
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Jun 15, 2021
May 7, 2021
Decision to grant a European patent
Search/Exam
Apr 29, 2021
Apr 20, 2021
Feb 11, 2021
(Electronic) Receipt
Search/Exam
Feb 11, 2021
English translation of the claims
Search/Exam
Feb 11, 2021
Filing of the translations of the claims
Search/Exam
Feb 11, 2021
French translation of claims
Search/Exam
Nov 2, 2020
Nov 2, 2020
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Intention to grant (signatures)
Search/Exam
Nov 2, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 2, 2020
Oct 5, 2020
Examination started
Search/Exam
Aug 27, 2020
Aug 27, 2020
Aug 13, 2020
Aug 10, 2020
Aug 5, 2020
(Electronic) Receipt
Search/Exam
Aug 5, 2020
Aug 5, 2020
Amended claims with annotations
Search/Exam
Aug 5, 2020
Amendments received before examination
Search/Exam
Aug 5, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2020
Feb 10, 2020
Jan 9, 2020
Notification of forthcoming publication
Search/Exam
Feb 12, 2019
Feb 12, 2019
European search opinion
Search/Exam
Feb 12, 2019
European search report
Search/Exam
Feb 12, 2019
Information on Search Strategy
Search/Exam
Feb 1, 2019
Search started
Search/Exam
Sep 26, 2018
Communication to designated inventor
Search/Exam
Aug 22, 2018
Aug 17, 2018
Aug 3, 2018
Abstract
Search/Exam
Aug 3, 2018
Aug 3, 2018
Claims
Search/Exam
Aug 3, 2018
Description
Search/Exam
Aug 3, 2018
Designation of inventor
Search/Exam
Aug 3, 2018
Drawings
Search/Exam
Aug 3, 2018
Request for grant of a European patent
Search/Exam