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The patent EP3941652 was granted to Syntegon Technology on Nov 16, 2022. The application was filed on Mar 12, 2020 under application number EP20711576A. 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 |
|---|---|---|---|
| GROSSE VON HIRSCHHAUSEN PATENTDIENST | Aug 14, 2023 | GROSSE SCHUMACHER KNAUER VON HIRSCHHAUSEN | ADMISSIBLE |
| GRONINGER | Aug 4, 2023 | WITTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE19947786 |
| INTERNATIONAL-SEARCH-REPORT | DE19947786 |
| INTERNATIONAL-SEARCH-REPORT | EP1460126 |
| INTERNATIONAL-SEARCH-REPORT | WO2017072591 |
| INTERNATIONAL-SEARCH-REPORT | WO2018050889 |
| OPPOSITION | DE19947786 |
| OPPOSITION | EP1460126 |
| OPPOSITION | EP2733196 |
| OPPOSITION | JP2004329029 |
| OPPOSITION | JP2008237112 |
| OPPOSITION | US10166686 |
| OPPOSITION | US2016331857 |
| OPPOSITION | US2017121046 |
| OPPOSITION | WO2009147252 |
| OPPOSITION | WO2017072591 |
| OPPOSITION | WO2018050889 |
| OPPOSITION | WO2018109549 |
| OTHER | EP1460126 |
| OTHER | EP2733196 |
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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Nov 13, 2025
Nov 13, 2025
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Sep 1, 2025
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Aug 27, 2025
(Electronic) Receipt
Appeal
Aug 27, 2025
Aug 27, 2025
Jul 15, 2025
Jul 15, 2025
Jul 10, 2025
(Electronic) Receipt
Appeal
Jul 10, 2025
Jul 10, 2025
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Jun 4, 2025
(Electronic) Receipt
Appeal
Jun 4, 2025
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Reply to appeal
Appeal
Feb 5, 2025
Feb 5, 2025
Feb 5, 2025
Jan 31, 2025
(Electronic) Receipt
Appeal
Jan 31, 2025
Jan 31, 2025
Jan 29, 2025
(Electronic) Receipt
Appeal
Jan 29, 2025
Jan 29, 2025
Dec 3, 2024
Dec 3, 2024
Dec 3, 2024
Dec 3, 2024
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Dec 3, 2024
Nov 28, 2024
(Electronic) Receipt
Appeal
Nov 28, 2024
(Electronic) Receipt
Appeal
Nov 28, 2024
Nov 28, 2024
Notice of appeal
Appeal
Nov 28, 2024
Notice of appeal
Appeal
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
Oct 1, 2024
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Means of redress
OPPO
Oct 1, 2024
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Annex
OPPO
Aug 14, 2023
Aug 14, 2023
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Nov 29, 2022
Oct 20, 2022
Decision to grant a European patent
Search/Exam
Oct 14, 2022
(Electronic) Receipt
Search/Exam
Oct 14, 2022
Letter accompanying subsequently filed items
Search/Exam
Oct 14, 2022
Aug 19, 2022
Aug 19, 2022
Aug 19, 2022
Aug 11, 2022
Observations by third parties
Search/Exam
Jul 11, 2022
(Electronic) Receipt
Search/Exam
Jul 11, 2022
English translation of the claims
Search/Exam
Jul 11, 2022
Filing of the translations of the claims
Search/Exam
Jul 11, 2022
French translation of claims
Search/Exam
Jul 11, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 5, 2022
(Electronic) Receipt
Search/Exam
Jul 5, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 5, 2022
Jun 20, 2022
Jun 7, 2022
Observations by third parties
Search/Exam
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Intention to grant (signatures)
Search/Exam
Mar 30, 2022
Text intended for grant (clean copy)
Search/Exam
Mar 30, 2022
Mar 24, 2022
Mar 11, 2022
Examination started
Search/Exam
Mar 10, 2022
(Electronic) Receipt
Search/Exam
Mar 10, 2022
Enquiry as to the processing of the file
Search/Exam
Mar 10, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 8, 2022
Deficiencies in an enquiry
Search/Exam
Feb 25, 2022
(Electronic) Receipt
Search/Exam
Feb 25, 2022
Enquiry as to the processing of the file
Search/Exam
Feb 25, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 25, 2022
(Electronic) Receipt
Search/Exam
Jan 25, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 25, 2022
Jan 12, 2022
Jan 5, 2022
Nov 22, 2021
Nov 22, 2021
Nov 3, 2021
Oct 20, 2021
(Electronic) Receipt
Search/Exam
Oct 20, 2021
Oct 20, 2021
Oct 20, 2021
Request for entry into the European phase
Search/Exam
Oct 8, 2021
Oct 8, 2021
Oct 8, 2021
Oct 8, 2021
Oct 8, 2021
Oct 1, 2021
Information on entry into European phase
Search/Exam
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 1, 2021
Notification of election of EPO
Search/Exam
Mar 25, 2021
Mar 23, 2021
Mar 16, 2021
Mar 16, 2021
PCT demand form
PCT2
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Mar 16, 2021
Dec 14, 2020
Nov 26, 2020
Copy of the international search report
Search/Exam
Nov 26, 2020
Copy of the international search report
Search/Exam
Nov 26, 2020
Published international application - A1
Search/Exam
Apr 3, 2020
Mar 27, 2020
Mar 12, 2020
(Electronic) Receipt
PCTRO
Mar 12, 2020
Abstract
PCTRO
Mar 12, 2020
Claims
PCTRO
Mar 12, 2020
Description
PCTRO
Mar 12, 2020
Mar 12, 2020
Drawings
PCTRO
Mar 12, 2020