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The patent EP3456535 was granted to Heidelberger Druckmaschinen on Apr 21, 2021. The application was filed on Jul 2, 2018 under application number EP18181139A. 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 |
|---|---|---|---|
| KOENIG & BAUER | Sep 15, 2021 | KOENIG & BAUER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102007043103 |
| OPPOSITION | EP1777073 |
| OPPOSITION | EP2529932 |
| OPPOSITION | US8194270 |
| OPPOSITION | WO2005092613 |
| OPPOSITION | WO2005094054 |
| OPPOSITION | WO2010020564 |
| SEARCH | DE102011014073 |
| SEARCH | DE19516354 |
| SEARCH | EP1607220 |
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 18, 2025
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(Electronic) Receipt
Appeal
Jul 25, 2025
Authorisation
Appeal
Jul 25, 2025
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(Electronic) Receipt
Appeal
Jul 11, 2024
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(Electronic) Receipt
Appeal
Jun 25, 2024
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Reply to appeal
Appeal
Apr 10, 2024
Feb 28, 2024
Nov 13, 2023
Nov 13, 2023
Nov 3, 2023
(Electronic) Receipt
Appeal
Nov 3, 2023
Notice of appeal
Appeal
Nov 3, 2023
Oct 6, 2023
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Means of redress
OPPO
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Authorisation
OPPO
Apr 17, 2023
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May 4, 2021
Mar 25, 2021
Decision to grant a European patent
Search/Exam
Mar 12, 2021
(Electronic) Receipt
Search/Exam
Mar 12, 2021
English translation of the claims
Search/Exam
Mar 12, 2021
French translation of claims
Search/Exam
Mar 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 3, 2020
Dec 3, 2020
Dec 3, 2020
Intention to grant (signatures)
Search/Exam
Dec 3, 2020
Text intended for grant (clean copy)
Search/Exam
Dec 3, 2020
Nov 16, 2020
Examination started
Search/Exam
Mar 25, 2019
Feb 20, 2019
Notification of forthcoming publication
Search/Exam
Feb 8, 2019
(Electronic) Receipt
Search/Exam
Feb 8, 2019
Feb 8, 2019
Amended claims with annotations
Search/Exam
Feb 8, 2019
Feb 8, 2019
Amended description with annotations
Search/Exam
Feb 8, 2019
Amendments received before examination
Search/Exam
Feb 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 17, 2018
Dec 17, 2018
European search opinion
Search/Exam
Dec 17, 2018
European search report
Search/Exam
Dec 17, 2018
Information on Search Strategy
Search/Exam
Dec 14, 2018
Submission concerning representation
Search/Exam
Dec 12, 2018
Submission concerning representation
Search/Exam
Sep 25, 2018
Communication to designated inventor
Search/Exam
Sep 25, 2018
Communication to designated inventor
Search/Exam
Sep 25, 2018
Communication to designated inventor
Search/Exam
Sep 25, 2018
Communication to designated inventor
Search/Exam
Sep 25, 2018
Communication to designated inventor
Search/Exam
Jul 9, 2018
Letter concerning the priority
Search/Exam
Jul 9, 2018
Priority document
Search/Exam
Jul 2, 2018
Abstract
Search/Exam
Jul 2, 2018
Jul 2, 2018
Claims
Search/Exam
Jul 2, 2018
Description
Search/Exam
Jul 2, 2018
Designation of inventor
Search/Exam
Jul 2, 2018
Drawings
Search/Exam
Jul 2, 2018
Priority search results
Search/Exam
Jul 2, 2018
Request for grant of a European patent
Search/Exam