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The patent EP3064485 was granted to Mitsubishi Chemical on Feb 24, 2021. The application was filed on Oct 28, 2014 under application number EP14857447A. 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 |
|---|---|---|---|
| LAIR LIQUIDE SOCIETE ANONYME POUR LETUDE ET LEXPLOITATION DES PROCEDES GEORGES CLAUDE | Aug 3, 2018 | STANG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2000344711 |
| DESCRIPTION | JP2005289927 |
| INTERNATIONAL-SEARCH-REPORT | JP2000256221 |
| INTERNATIONAL-SEARCH-REPORT | JP2000344711 |
| INTERNATIONAL-SEARCH-REPORT | JP2007217401 |
| INTERNATIONAL-SEARCH-REPORT | JP2007255805 |
| INTERNATIONAL-SEARCH-REPORT | JPH01105000 |
| INTERNATIONAL-SEARCH-REPORT | WO03018162 |
| INTERNATIONAL-SEARCH-REPORT | WO2005100295 |
| OPPOSITION | EP1059281 |
| OPPOSITION | JP2000256221 |
| OPPOSITION | JP2004261683 |
| OPPOSITION | JP2009149587 |
| OPPOSITION | JP2009249314 |
| OPPOSITION | JPH01105000 |
| OPPOSITION | US2001016668 |
| OPPOSITION | US2004222077 |
| OPPOSITION | US6596129 |
| OPPOSITION | US6878239 |
| SEARCH | EP1057804 |
| SEARCH | EP1731496 |
| SEARCH | JP2000344711 |
| SEARCH | US2004222077 |
| SEARCH | US3702346 |
| SEARCH | WO03018162 |
| SEARCH | WO2005100295 |
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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Jan 28, 2021
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Description
OPPO
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Means of redress
OPPO
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Feb 8, 2019
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Claims
OPPO
Jan 28, 2019
Claims
OPPO
Jan 28, 2019
Claims
OPPO
Jan 28, 2019
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Dec 7, 2017
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Decision to grant a European patent
Search/Exam
Oct 9, 2017
Oct 4, 2017
Aug 24, 2017
Filing of the translations of the claims
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Aug 24, 2017
French translation of claims
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Aug 24, 2017
German translation of the claims
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Aug 24, 2017
Payment of fees and costs
Search/Exam
Jul 6, 2017
Jun 27, 2017
Payment of fees and costs
Search/Exam
Jun 27, 2017
Apr 21, 2017
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Intention to grant (signatures)
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Apr 21, 2017
Text intended for grant (clean copy)
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Apr 21, 2017
Mar 23, 2017
Examination started
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Jan 18, 2017
Maintenance of the application
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Oct 28, 2016
Oct 11, 2016
Oct 11, 2016
European search opinion
Search/Exam
Oct 11, 2016
Information on Search Strategy
Search/Exam
Oct 11, 2016
Supplementary European search report
Search/Exam
Sep 30, 2016
Search started
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Aug 10, 2016
Notification of forthcoming publication
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Jun 28, 2016
Communication to designated inventor
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May 25, 2016
(Electronic) Receipt
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May 25, 2016
Abstract
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May 25, 2016
May 25, 2016
Amended claims with annotations
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May 25, 2016
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Amended description with annotations
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May 25, 2016
Amendments received before examination
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May 25, 2016
Claims
Search/Exam
May 25, 2016
Description
Search/Exam
May 25, 2016
Drawings
Search/Exam
May 25, 2016
Request for entry into the European phase
Search/Exam
May 18, 2016
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May 2, 2016
Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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Citation filed by a third party
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May 2, 2016
Observations by third parties
Search/Exam
Mar 11, 2016
Information on entry into European phase
Search/Exam
May 27, 2015
May 7, 2015
Copy of the international search report
Search/Exam
May 7, 2015
May 7, 2015
International publication pamphlet
Search/Exam