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The patent EP2841611 was granted to Norsk Hydro ASA on Apr 4, 2018. The application was filed on Apr 25, 2013 under application number EP13782264A. 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 |
|---|---|---|---|
| HAMMERER ALUMINIUM INDUSTRIES HOLDING | Jan 3, 2019 | WIRNSBERGER & LERCHBAUM PATENTANWALTE | ADMISSIBLE |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM SINGEN | Dec 21, 2018 | CONSTELLIUM PROPRIETE INDUSTRIELLE | ADMISSIBLE |
| FW BROKELMANN ALUMINIUMWERK | Dec 18, 2018 | GESTHUYSEN PATENTANWALTE | ADMISSIBLE |
| TRIMET ALUMINIUM | Dec 7, 2018 | FLACCUS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102008048374 |
| DESCRIPTION | EP1041165 |
| DESCRIPTION | EP2003219 |
| DESCRIPTION | EP2072628 |
| DESCRIPTION | EP2103701 |
| DESCRIPTION | EP2157200 |
| DESCRIPTION | US4525326 |
| DESCRIPTION | WO2011122958 |
| INTERNATIONAL-SEARCH-REPORT | CN102337429 |
| INTERNATIONAL-SEARCH-REPORT | JP2003155535 |
| INTERNATIONAL-SEARCH-REPORT | JP2003181530 |
| INTERNATIONAL-SEARCH-REPORT | JP2011106011 |
| INTERNATIONAL-SEARCH-REPORT | JP2011225988 |
| INTERNATIONAL-SEARCH-REPORT | US2010089503 |
| INTERNATIONAL-SEARCH-REPORT | WO2011122958 |
| OPPOSITION | CN102337429 |
| OPPOSITION | DE102005060297 |
| OPPOSITION | DE102008048374 |
| OPPOSITION | DE19830560 |
| OPPOSITION | DE19832489 |
| OPPOSITION | DE2103614 |
| OPPOSITION | DE2817261 |
| OPPOSITION | DE4421744 |
| OPPOSITION | EP0173632 |
| OPPOSITION | EP0687743 |
| OPPOSITION | EP0997547 |
| OPPOSITION | EP1041165 |
| OPPOSITION | EP1081242 |
| OPPOSITION | EP1785499 |
| OPPOSITION | EP2003219 |
| OPPOSITION | EP2072628 |
| OPPOSITION | EP2103701 |
| OPPOSITION | EP2157200 |
| OPPOSITION | FR2287365 |
| OPPOSITION | JP2002256368 |
| OPPOSITION | JP2003155535 |
| OPPOSITION | JP2003181530 |
| OPPOSITION | JP2011106011 |
| OPPOSITION | JP2011208251 |
| OPPOSITION | JP2011225988 |
| OPPOSITION | JPH01225756 |
| OPPOSITION | JPH086161 |
| OPPOSITION | US2010089503 |
| OPPOSITION | US4082578 |
| OPPOSITION | WO2007094686 |
| OPPOSITION | WO2011122958 |
| OPPOSITION | WO9527091 |
| OPPOSITION | WO9635819 |
| OPPOSITION | WO9744501 |
| OPPOSITION | WO9907906 |
| OTHER | EP1785499 |
| OTHER | JP2003181530 |
| OTHER | JPH01225756 |
| OTHER | WO2007094686 |
| OTHER | WO2011122958 |
| OTHER | WO2013162374 |
| SEARCH | EP2003219 |
| SEARCH | EP2088216 |
| SEARCH | JP2011208251 |
| SEARCH | WO2007094686 |
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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French translation of claims
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Letter accompanying subsequently filed items
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Letter accompanying subsequently filed items
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Citation filed by a third party
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Amended claims with annotations
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Amended claims with annotations
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Claims
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Claims
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Description
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Aug 14, 2017
Letter accompanying subsequently filed items
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Annex to the communication
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Communication from the Examining Division
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Apr 10, 2017
(Electronic) Receipt
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Amended claims with annotations
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Claims
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Apr 10, 2017
Letter accompanying subsequently filed items
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Letter accompanying subsequently filed items
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Oct 24, 2016
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Annex to the communication
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Communication from the Examining Division
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Oct 7, 2016
Examination started
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Aug 31, 2016
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Aug 31, 2016
Letter accompanying subsequently filed items
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Amended claims with annotations
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Authorisation
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Apr 16, 2016
Jan 11, 2016
Dec 22, 2015
Dec 22, 2015
European search opinion
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Dec 22, 2015
Information on Search Strategy
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Dec 22, 2015
Supplementary European search report
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Dec 14, 2015
Search started
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Feb 4, 2015
Dec 18, 2014
Dec 3, 2014
Communication to designated inventor
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Dec 3, 2014
Communication to designated inventor
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Dec 3, 2014
Communication to designated inventor
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Dec 3, 2014
Communication to designated inventor
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Nov 12, 2014
Oct 20, 2014
Designation of inventor
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Oct 20, 2014
Matter concerning the application
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Oct 20, 2014
Request for entry into the European phase
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Oct 13, 2014
Designation of inventor
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Oct 13, 2014
Matter concerning the application
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Oct 13, 2014
Request for entry into the European phase
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Sep 5, 2014
Information on entry into European phase
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Nov 20, 2013
Oct 31, 2013
Copy of the international search report
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Oct 31, 2013
Published international application - A1
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