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The patent EP3393687 was granted to Hydro Aluminium Rolled Products on Apr 16, 2025. The application was filed on Dec 21, 2016 under application number EP16823270A. 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 | Jun 9, 2020 | - | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0096092 |
| INTERNATIONAL-SEARCH-REPORT | FR2562913 |
| INTERNATIONAL-SEARCH-REPORT | US4317521 |
| INTERNATIONAL-SEARCH-REPORT | US5813543 |
| INTERNATIONAL-SEARCH-REPORT | US6266390 |
| OPPOSITION | FR2562913 |
| OPPOSITION | RU2260795 |
| OPPOSITION | US6266390 |
| OPPOSITION | US8234139 |
| OPPOSITION | WO9705969 |
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.
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Reply to appeal
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Decision to grant a European patent
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(Electronic) Receipt
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Jul 30, 2019
English translation of the claims
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Jul 30, 2019
Filing of the translations of the claims
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Jul 30, 2019
French translation of claims
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Jul 30, 2019
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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Priority search results
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Jul 5, 2018
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(Electronic) Receipt
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Jun 1, 2018
Matter concerning the application
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Jun 1, 2018
Request for entry into the European phase
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May 4, 2018
Information on entry into European phase
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Written opinion
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Notification of election of EPO
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PCT demand form
PCT2
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Published international application - A9
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Copy of the international search report
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Jun 29, 2017
Copy of the international search report
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Jun 29, 2017
Published international application - A1
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Apr 6, 2017
ISR: cited documents
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(Electronic) Receipt
PCTRO
Dec 21, 2016
Abstract
PCTRO
Dec 21, 2016
Claims
PCTRO
Dec 21, 2016
Description
PCTRO
Dec 21, 2016
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Drawings
PCTRO
Dec 21, 2016