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The patent EP3164524 was granted to Aleris Rolled Products Germany on Sep 3, 2025. The application was filed on Jun 12, 2015 under application number EP15728541A. 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 |
|---|---|---|---|
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM NEUF BRISACH | Jul 29, 2020 | CONSTELLIUM PROPRIETE INDUSTRIELLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE19938995 |
| INTERNATIONAL-SEARCH-REPORT | EP0300927 |
| INTERNATIONAL-SEARCH-REPORT | EP1484420 |
| INTERNATIONAL-SEARCH-REPORT | EP1484421 |
| INTERNATIONAL-SEARCH-REPORT | JP2007131881 |
| INTERNATIONAL-SEARCH-REPORT | WO9746726 |
| OPPOSITION | EP1386975 |
| OPPOSITION | FR2855833 |
| OPPOSITION | JP2010168632 |
| OPPOSITION | JPH04371368 |
| OPPOSITION | JPH06264171 |
| OPPOSITION | US2004062946 |
| OPPOSITION | US4431463 |
| OPPOSITION | WO0136697 |
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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Aug 7, 2025
Aug 7, 2025
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Means of redress
OPPO
Apr 23, 2025
Nov 29, 2024
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Description
OPPO
Jul 30, 2024
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(Electronic) Receipt
Appeal
Dec 19, 2023
Dec 19, 2023
Nov 21, 2023
Nov 16, 2023
(Electronic) Receipt
Appeal
Nov 16, 2023
Nov 16, 2023
Nov 15, 2023
Nov 10, 2023
(Electronic) Receipt
Appeal
Nov 10, 2023
Nov 10, 2023
Nov 8, 2023
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Aug 29, 2023
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Aug 9, 2023
(Electronic) Receipt
Appeal
Aug 9, 2023
Aug 9, 2023
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Aug 3, 2023
Aug 3, 2023
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(Electronic) Receipt
Appeal
Aug 2, 2023
Aug 2, 2023
Aug 1, 2023
Advice of delivery
Appeal
Jul 27, 2023
Jul 27, 2023
Jul 24, 2023
Sep 23, 2022
Sep 20, 2022
(Electronic) Receipt
Appeal
Sep 20, 2022
Sep 20, 2022
Sep 20, 2022
Sep 20, 2022
Reply to appeal
Appeal
Aug 3, 2022
Jul 8, 2022
Jul 5, 2022
(Electronic) Receipt
Appeal
Jul 5, 2022
(Electronic) Receipt
Appeal
Jul 5, 2022
Jul 5, 2022
Jul 5, 2022
Jul 5, 2022
May 12, 2022
May 12, 2022
May 5, 2022
(Electronic) Receipt
Appeal
May 5, 2022
May 5, 2022
Notice of appeal
Appeal
Mar 28, 2022
Mar 10, 2022
Mar 9, 2022
Mar 7, 2022
Mar 7, 2022
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Means of redress
OPPO
Mar 7, 2022
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Jul 6, 2020
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Jun 24, 2020
(Electronic) Receipt
Search/Exam
Jun 24, 2020
General authorisation
Search/Exam
Jun 24, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 24, 2020
Feb 29, 2020
Nov 11, 2019
Oct 4, 2019
Decision to grant a European patent
Search/Exam
Sep 13, 2019
(Electronic) Receipt
Search/Exam
Sep 13, 2019
Filing of the translations of the claims
Search/Exam
Sep 13, 2019
French translation of claims
Search/Exam
Sep 13, 2019
German translation of the claims
Search/Exam
Sep 13, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2019
Jul 12, 2019
Jul 12, 2019
Intention to grant (signatures)
Search/Exam
Jul 12, 2019
Text intended for grant (clean copy)
Search/Exam
Jul 12, 2019
Jan 9, 2019
(Electronic) Receipt
Search/Exam
Jan 9, 2019
Amended description with annotations
Search/Exam
Jan 9, 2019
Description
Search/Exam
Jan 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 9, 2019
Dec 17, 2018
Annex to the communication
Search/Exam
Dec 17, 2018
Communication from the Examining Division
Search/Exam
Dec 6, 2018
Examination started
Search/Exam
Jul 27, 2017
(Electronic) Receipt
Search/Exam
Jul 27, 2017
Jul 27, 2017
Amended claims with annotations
Search/Exam
Jul 27, 2017
Amendments received before examination
Search/Exam
Jul 27, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 12, 2017
Mar 23, 2017
(Electronic) Receipt
Search/Exam
Mar 23, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2017
Letter concerning the inventor
Search/Exam
Mar 9, 2017
Feb 23, 2017
Letter which had not been notified
Search/Exam
Feb 17, 2017
Feb 10, 2017
Priority search results copy provided by EPO
Search/Exam
Feb 8, 2017
Communication to designated inventor
Search/Exam
Feb 8, 2017
Communication to designated inventor
Search/Exam
Jan 23, 2017
Dec 6, 2016
(Electronic) Receipt
Search/Exam
Dec 6, 2016
Dec 6, 2016
Request for entry into the European phase
Search/Exam
Nov 11, 2016
Information on entry into European phase
Search/Exam
Jan 26, 2016
Jan 7, 2016
Copy of the international search report
Search/Exam
Jan 7, 2016
Published international application - A1
Search/Exam
Aug 25, 2015
ISR: cited documents
PCTISA
Aug 24, 2015
Aug 24, 2015
Aug 24, 2015
Jun 12, 2015
(Electronic) Receipt
PCTRO
Jun 12, 2015
Abstract
PCTRO
Jun 12, 2015
Claims
PCTRO
Jun 12, 2015
Description
PCTRO
Jun 12, 2015