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The patent EP3622096 was granted to Aleris Aluminum Duffel Bvba on Sep 22, 2021. The application was filed on May 9, 2018 under application number EP18729573A. 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 |
|---|---|---|---|
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM NEUF BRISACH | Jun 22, 2022 | CONSTELLIUM PROPRIETE INDUSTRIELLE | ADMISSIBLE |
| SPEIRA | Jun 22, 2022 | COHAUSZ & FLORACK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US4174232 |
| INTERNATIONAL-SEARCH-REPORT | EP0679199 |
| INTERNATIONAL-SEARCH-REPORT | US2016002761 |
| INTERNATIONAL-SEARCH-REPORT | WO9814626 |
| OPPOSITION | EP2270249 |
| OPPOSITION | EP2570509 |
| OPPOSITION | US6652678 |
| OPPOSITION | WO2014135367 |
| OPPOSITION | WO2017015186 |
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 15, 2025
Dec 15, 2025
Dec 10, 2025
(Electronic) Receipt
Appeal
Dec 10, 2025
Dec 10, 2025
Oct 27, 2025
(Electronic) Receipt
Search/Exam
Oct 27, 2025
Letter accompanying subsequently filed items
Search/Exam
Oct 16, 2025
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Oct 9, 2025
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Aug 13, 2025
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Aug 11, 2025
(Electronic) Receipt
Appeal
Aug 11, 2025
Aug 11, 2025
Dec 3, 2024
Nov 28, 2024
(Electronic) Receipt
Appeal
Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
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Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
Nov 28, 2024
Reply to appeal
Appeal
Oct 14, 2024
Refund of fees
Search/Exam
Oct 10, 2024
Oct 10, 2024
Oct 4, 2024
(Electronic) Receipt
Appeal
Oct 4, 2024
Oct 4, 2024
Sep 17, 2024
Sep 17, 2024
Sep 12, 2024
(Electronic) Receipt
Appeal
Sep 12, 2024
Sep 12, 2024
Withdrawal of an appeal
Appeal
Aug 26, 2024
Aug 5, 2024
Aug 5, 2024
Jul 31, 2024
(Electronic) Receipt
Appeal
Jul 31, 2024
(Electronic) Receipt
Appeal
Jul 31, 2024
Jul 31, 2024
Jul 31, 2024
Notice of appeal
Appeal
Jul 31, 2024
Notice of appeal
Appeal
Jun 3, 2024
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Means of redress
OPPO
Jun 3, 2024
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Oct 5, 2021
Aug 26, 2021
Decision to grant a European patent
Search/Exam
Aug 11, 2021
(Electronic) Receipt
Search/Exam
Aug 11, 2021
Filing of the translations of the claims
Search/Exam
Aug 11, 2021
French translation of claims
Search/Exam
Aug 11, 2021
German translation of the claims
Search/Exam
Aug 11, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Intention to grant (signatures)
Search/Exam
Apr 30, 2021
Text intended for grant (clean copy)
Search/Exam
Apr 30, 2021
Mar 4, 2021
Mar 1, 2021
Examination started
Search/Exam
Feb 19, 2021
(Electronic) Receipt
Search/Exam
Feb 19, 2021
Enquiry as to the processing of the file
Search/Exam
Feb 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2020
(Electronic) Receipt
Search/Exam
Jun 17, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2020
Reply to Written Opinion prepared by the EPO
Search/Exam
Feb 19, 2020
Dec 18, 2019
Dec 16, 2019
Communication to designated inventor
Search/Exam
Dec 16, 2019
Communication to designated inventor
Search/Exam
Dec 11, 2019
Priority search results copy provided by EPO
Search/Exam
Dec 11, 2019
Priority search results copy provided by EPO
Search/Exam
Nov 26, 2019
Nov 20, 2019
(Electronic) Receipt
Search/Exam
Nov 20, 2019
Request for entry into the European phase
Search/Exam
Sep 20, 2019
Information on entry into European phase
Search/Exam
Dec 6, 2018
Dec 6, 2018
Nov 15, 2018
Copy of the international search report
Search/Exam
Nov 15, 2018
Published international application - A1
Search/Exam
Jul 12, 2018
ISR: cited documents
PCTISA
Jul 11, 2018
Jul 11, 2018
Jul 11, 2018
Jun 25, 2018
Jun 22, 2018
Jun 19, 2018
May 9, 2018
(Electronic) Receipt
PCTRO
May 9, 2018
Abstract
PCTRO
May 9, 2018
Claims
PCTRO
May 9, 2018
Description
PCTRO
May 9, 2018
May 9, 2018
May 9, 2018
May 9, 2018