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The patent EP2553131 was granted to Norsk Hydro ASA on May 8, 2019. The application was filed on Mar 30, 2011 under application number EP11763104A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| TRIMET ALUMINIUM | Feb 7, 2020 | FLACCUS | ADMISSIBLE |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM EXTRUSION DECIN SRO CONSTELLIUM VALAIS | Feb 6, 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 | JP2009084698 |
| INTERNATIONAL-SEARCH-REPORT | JPS56139646 |
| INTERNATIONAL-SEARCH-REPORT | JPS58167757 |
| INTERNATIONAL-SEARCH-REPORT | WO2011040453 |
| OPPOSITION | DE102005060297 |
| OPPOSITION | DE2103614 |
| OPPOSITION | DE4421744 |
| OPPOSITION | EP0676480 |
| OPPOSITION | EP0687743 |
| OPPOSITION | EP0936278 |
| OPPOSITION | EP0987344 |
| OPPOSITION | EP0997547 |
| OPPOSITION | EP1041165 |
| OPPOSITION | EP1104815 |
| OPPOSITION | EP1614760 |
| OPPOSITION | EP1715067 |
| OPPOSITION | EP2003219 |
| OPPOSITION | FR1602294 |
| OPPOSITION | JP2003155535 |
| OPPOSITION | JP2003181530 |
| OPPOSITION | JP2004292937 |
| OPPOSITION | JP2009084698 |
| OPPOSITION | JPH086161B |
| OPPOSITION | JPS58167575 |
| OPPOSITION | JPS58167757 |
| OPPOSITION | US3717512 |
| OPPOSITION | US4082578 |
| OPPOSITION | US5888320 |
| OPPOSITION | US6248189 |
| OPPOSITION | US6258465 |
| OPPOSITION | WO02099151 |
| OPPOSITION | WO2007094686 |
| OPPOSITION | WO9527091 |
| SEARCH | JP2009084698 |
| SEARCH | US6248189 |
| SEARCH | WO2011040453 |
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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OPPO
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Authorisation
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Authorisation
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Apr 11, 2019
Decision to grant a European patent
Search/Exam
Mar 27, 2019
(Electronic) Receipt
Search/Exam
Mar 27, 2019
Filing of the translations of the claims
Search/Exam
Mar 27, 2019
French translation of claims
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Mar 27, 2019
German translation of the claims
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Mar 27, 2019
Letter accompanying subsequently filed items
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Feb 26, 2019
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Intention to grant (signatures)
Search/Exam
Feb 26, 2019
Text intended for grant (clean copy)
Search/Exam
Feb 26, 2019
Jan 30, 2019
Examination started
Search/Exam
Jul 13, 2018
Jul 10, 2018
(Electronic) Receipt
Search/Exam
Jul 10, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 10, 2018
Aug 18, 2017
(Electronic) Receipt
Search/Exam
Aug 18, 2017
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Amended claims with annotations
Search/Exam
Aug 18, 2017
Amended claims with annotations
Search/Exam
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Amended description with annotations
Search/Exam
Aug 18, 2017
Amended description with annotations
Search/Exam
Aug 18, 2017
Amendments received before examination
Search/Exam
Aug 18, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2017
Mar 3, 2017
Mar 3, 2017
European search opinion
Search/Exam
Mar 3, 2017
Information on Search Strategy
Search/Exam
Mar 3, 2017
Supplementary European search report
Search/Exam
Feb 21, 2017
Search started
Search/Exam
May 17, 2016
Apr 16, 2016
Authorisation
Search/Exam
Apr 16, 2016
Apr 16, 2016
Submission concerning representation
Search/Exam
Feb 11, 2013
Communication to designated inventor
Search/Exam
Feb 11, 2013
Communication to designated inventor
Search/Exam
Jan 29, 2013
Letter concerning the inventor
Search/Exam
Jan 9, 2013
Dec 6, 2012
Dec 3, 2012
Nov 29, 2012
Letter which had not been notified
Search/Exam
Nov 26, 2012
Letter which had not been notified
Search/Exam
Nov 13, 2012
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Nov 9, 2012
Communication to designated inventor
Search/Exam
Oct 16, 2012
Sep 24, 2012
Designation of inventor
Search/Exam
Sep 24, 2012
Matter concerning the application
Search/Exam
Sep 24, 2012
Request for entry into the European phase
Search/Exam
Sep 24, 2012
Submission concerning representation
Search/Exam
Sep 18, 2012
Designation of inventor
Search/Exam
Sep 18, 2012
Request for entry into the European phase
Search/Exam
Sep 18, 2012
Request for entry into the European phase
Search/Exam
Aug 10, 2012
Information on entry into European phase
Search/Exam
Oct 25, 2011
Oct 6, 2011
Copy of the international search report
Search/Exam
Oct 6, 2011
Published international application - A1
Search/Exam