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The patent EP3717794 was granted to Spaleck Kommanditgesellschaft on Aug 20, 2025. The application was filed on Nov 15, 2018 under application number EP18814491A. 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 |
|---|---|---|---|
| STEINHAUS | Jun 24, 2022 | PATENTANWALTSKANZLEI METHLING | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE202012003315U |
| DESCRIPTION | DE202015106653U |
| DESCRIPTION | DE2427907 |
| INTERNATIONAL-SEARCH-REPORT | DE2357838 |
| INTERNATIONAL-SEARCH-REPORT | DE4233212 |
| INTERNATIONAL-SEARCH-REPORT | EP3034905 |
| INTERNATIONAL-SEARCH-REPORT | WO03089806 |
| OPPOSITION | DE2357838 |
| OPPOSITION | DE4233212 |
| OPPOSITION | EP3034905 |
| OPPOSITION | WO03089806 |
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 24, 2025
Jul 24, 2025
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Jun 6, 2025
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May 27, 2025
May 21, 2025
Refund of fees
Appeal
May 19, 2025
May 19, 2025
May 14, 2025
May 9, 2025
May 7, 2025
(Electronic) Receipt
Appeal
May 7, 2025
May 7, 2025
Withdrawal of an appeal
Appeal
Apr 3, 2025
Apr 3, 2025
Mar 28, 2025
(Electronic) Receipt
Appeal
Mar 28, 2025
(Electronic) Receipt
Appeal
Mar 28, 2025
Mar 28, 2025
Mar 28, 2025
Notice of appeal
Appeal
Mar 28, 2025
Notice of appeal
Appeal
Mar 27, 2025
(Electronic) Receipt
Appeal
Mar 27, 2025
Mar 27, 2025
Notice of appeal
Appeal
Jan 28, 2025
Jan 28, 2025
Jan 28, 2025
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Means of redress
OPPO
Jan 28, 2025
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Authorisation
OPPO
Nov 29, 2022
Nov 16, 2022
Nov 16, 2022
Nov 7, 2022
Request concerning representative opponent
Search/Exam
Jul 27, 2022
Jul 22, 2022
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Oct 19, 2021
Sep 9, 2021
Decision to grant a European patent
Search/Exam
Aug 31, 2021
(Electronic) Receipt
Search/Exam
Aug 31, 2021
English translation of the claims
Search/Exam
Aug 31, 2021
Filing of the translations of the claims
Search/Exam
Aug 31, 2021
French translation of claims
Search/Exam
Aug 31, 2021
Letter accompanying subsequently filed items
Search/Exam
May 19, 2021
May 19, 2021
May 19, 2021
Intention to grant (signatures)
Search/Exam
May 19, 2021
Text intended for grant (clean copy)
Search/Exam
May 19, 2021
Apr 1, 2021
Mar 27, 2021
Examination started
Search/Exam
Jan 14, 2021
Document concerning representation
Search/Exam
Jan 13, 2021
Sep 9, 2020
Jul 3, 2020
Communication to designated inventor
Search/Exam
Jul 3, 2020
Communication to designated inventor
Search/Exam
Jun 11, 2020
Jun 11, 2020
May 27, 2020
Authorisation
Search/Exam
May 27, 2020
Matter concerning the application
Search/Exam
May 18, 2020
(Electronic) Receipt
Search/Exam
May 18, 2020
May 18, 2020
Amended description with annotations
Search/Exam
May 18, 2020
Amendments received before examination
Search/Exam
May 18, 2020
Authorisation
Search/Exam
May 18, 2020
Priority search results
Search/Exam
May 18, 2020
Request for entry into the European phase
Search/Exam
Apr 14, 2020
Information on entry into European phase
Search/Exam
Feb 25, 2020
Feb 25, 2020
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Jan 3, 2020
Dec 19, 2019
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Dec 17, 2019
Oct 28, 2019
Written opinion
PCT2
Oct 28, 2019
Oct 28, 2019
Aug 27, 2019
Aug 27, 2019
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Aug 6, 2019
Notification of election of EPO
Search/Exam
Aug 5, 2019
Jul 12, 2019
Jun 26, 2019
Jun 26, 2019
Jun 26, 2019
Jun 26, 2019
PCT demand form
PCT2
Jun 24, 2019
Jun 6, 2019
Copy of the international search report
Search/Exam
Jun 6, 2019
Copy of the international search report
Search/Exam
Jun 6, 2019
Published international application - A1
Search/Exam
Dec 6, 2018
Nov 21, 2018
Nov 21, 2018
Nov 15, 2018
(Electronic) Receipt
PCTRO
Nov 15, 2018
Abstract
PCTRO
Nov 15, 2018
Claims
PCTRO
Nov 15, 2018
Description
PCTRO
Nov 15, 2018
Nov 15, 2018
Drawings
PCTRO
Nov 15, 2018