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The patent EP3339457 was granted to Norsk Hydro ASA on Mar 11, 2020. The application was filed on Apr 25, 2013 under application number EP18151559A. 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 |
|---|---|---|---|
| KNAUF INSULATION | Dec 11, 2020 | GESTHUYSEN PATENTANWALTE | ADMISSIBLE |
| C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM SINGEN | Dec 9, 2020 | CONSTELLIUM PROPRIETE INDUSTRIELLE | ADMISSIBLE |
| HAMMERER ALUMINIUM INDUSTRIES EXTRUSION | Oct 20, 2020 | WIRNSBERGER & LERCHBAUM | ADMISSIBLE |
| HAMMERER ALUMINIUM INDUSTRIES EXTRUSION | Oct 20, 2020 | WIRNSBERGER & LERCHBAUM PATENTANWALTE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE19830560 |
| OPPOSITION | EP1081242 |
| OPPOSITION | EP2003219 |
| OPPOSITION | EP2072628 |
| OPPOSITION | JP2002256368 |
| OPPOSITION | JP2003155535 |
| OPPOSITION | JP2003181530 |
| OPPOSITION | JP2011225988 |
| OPPOSITION | JPH01225756 |
| OPPOSITION | JPH086161 |
| OPPOSITION | KR101103290B |
| OPPOSITION | US2009000705 |
| OPPOSITION | WO9744501 |
| SEARCH | EP2003219 |
| SEARCH | EP2088216 |
| SEARCH | JP2003181530 |
| SEARCH | JP2011208251 |
| SEARCH | JPH01225756 |
| 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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Description
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Advice of delivery
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Reply to appeal
Appeal
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Authorisation
Appeal
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Notice of appeal
Appeal
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Mar 23, 2020
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Decision to grant a European patent
Search/Exam
Jan 28, 2020
(Electronic) Receipt
Search/Exam
Jan 28, 2020
Filing of the translations of the claims
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Jan 28, 2020
French translation of claims
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Jan 28, 2020
German translation of the claims
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Jan 28, 2020
Letter accompanying subsequently filed items
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Nov 26, 2019
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Intention to grant (signatures)
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Nov 26, 2019
Text intended for grant (clean copy)
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Nov 26, 2019
Oct 31, 2019
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(Electronic) Receipt
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Oct 10, 2019
Amended claims with annotations
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Oct 10, 2019
Claims
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Oct 10, 2019
Letter accompanying subsequently filed items
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Oct 10, 2019
Jun 14, 2019
Annex to the communication
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Jun 14, 2019
Communication from the Examining Division
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Jun 7, 2019
Examination started
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Jun 6, 2019
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Dec 21, 2018
(Electronic) Receipt
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Dec 21, 2018
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Amended claims with annotations
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Dec 21, 2018
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Dec 21, 2018
Letter accompanying subsequently filed items
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Jul 2, 2018
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Notification of forthcoming publication
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May 14, 2018
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May 3, 2018
Refund of fees
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European search opinion
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Apr 24, 2018
European search report
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Apr 24, 2018
Information on Search Strategy
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Apr 10, 2018
Communication to designated inventor
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Apr 10, 2018
Communication to designated inventor
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Apr 10, 2018
Communication to designated inventor
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Apr 10, 2018
Communication to designated inventor
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Apr 5, 2018
Search started
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Jan 15, 2018
Abstract
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Jan 15, 2018
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Claims
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Jan 15, 2018
Description
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Jan 15, 2018
Designation of inventor
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Jan 15, 2018
Drawings
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Jan 15, 2018
Priority search results
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Jan 15, 2018
Request for grant of a European patent
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Nov 20, 2013