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The patent EP2848694 was granted to Mitsubishi Chemical on Aug 1, 2018. The application was filed on Sep 10, 2013 under application number EP13834617A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| FORRESTERS | Apr 26, 2019 | FORRESTERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2011200133 |
| DESCRIPTION | JPH0564589 |
| DESCRIPTION | JPH1024867 |
| DESCRIPTION | JPH10337185 |
| DESCRIPTION | WO0032789 |
| DESCRIPTION | WO2007039415 |
| DESCRIPTION | WO2007110394 |
| DESCRIPTION | WO2008145737 |
| DESCRIPTION | WO2009135074 |
| DESCRIPTION | WO2011031897 |
| DESCRIPTION | WO2012135789 |
| INTERNATIONAL-SEARCH-REPORT | JP2011519561 |
| INTERNATIONAL-SEARCH-REPORT | WO0032789 |
| INTERNATIONAL-SEARCH-REPORT | WO2007039415 |
| INTERNATIONAL-SEARCH-REPORT | WO2012135789 |
| OPPOSITION | EP3029145 |
| OPPOSITION | US2010291644 |
| OPPOSITION | WO0032789 |
| OPPOSITION | WO2007039415 |
| OPPOSITION | WO2009135074 |
| OPPOSITION | WO2012135789 |
| OPPOSITION | WO2015015784 |
| SEARCH | WO0032789 |
| SEARCH | WO2005090586 |
| SEARCH | WO2007039415 |
| SEARCH | WO2009135074 |
| SEARCH | WO2012135789 |
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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Feb 28, 2025
Feb 28, 2025
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(Electronic) Receipt
Appeal
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Dec 5, 2024
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Dec 4, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Nov 28, 2022
Nov 23, 2022
(Electronic) Receipt
Appeal
Nov 23, 2022
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Oct 6, 2022
Sep 30, 2022
(Electronic) Receipt
Appeal
Sep 30, 2022
Sep 30, 2022
Sep 13, 2022
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Aug 31, 2022
(Electronic) Receipt
Appeal
Aug 31, 2022
Aug 31, 2022
Notice of appeal
Appeal
Jul 19, 2022
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Means of redress
OPPO
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Aug 13, 2018
Jul 5, 2018
Decision to grant a European patent
Search/Exam
Jun 20, 2018
(Electronic) Receipt
Search/Exam
Jun 20, 2018
Filing of the translations of the claims
Search/Exam
Jun 20, 2018
French translation of claims
Search/Exam
Jun 20, 2018
German translation of the claims
Search/Exam
Jun 20, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 29, 2018
Mar 29, 2018
Mar 29, 2018
Intention to grant (signatures)
Search/Exam
Mar 29, 2018
Text intended for grant (clean copy)
Search/Exam
Mar 29, 2018
Text intended for grant (sequence listing)
Search/Exam
Mar 29, 2018
Mar 21, 2018
Mar 13, 2018
(Electronic) Receipt
Search/Exam
Mar 13, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 13, 2018
Dec 14, 2017
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Dec 14, 2017
Intention to grant (signatures)
Search/Exam
Dec 14, 2017
Text intended for grant (clean copy)
Search/Exam
Dec 14, 2017
Text intended for grant (sequence listing)
Search/Exam
Dec 14, 2017
Oct 24, 2017
Examination started
Search/Exam
Jul 27, 2017
Jul 19, 2017
Jul 14, 2017
(Electronic) Receipt
Search/Exam
Jul 14, 2017
Deficiencies in an enquiry
Search/Exam
Jul 14, 2017
Enquiry as to the processing of the file
Search/Exam
Jul 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2017
Jul 12, 2017
Jul 6, 2017
(Electronic) Receipt
Search/Exam
Jul 6, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 6, 2017
Jan 25, 2016
Jan 25, 2016
Amended claims with annotations
Search/Exam
Jan 25, 2016
Amendments received before examination
Search/Exam
Jul 23, 2015
Jul 6, 2015
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European search opinion
Search/Exam
Jul 6, 2015
Supplementary European search report
Search/Exam
Jun 22, 2015
Search started
Search/Exam
Apr 15, 2015
Communication to designated inventor
Search/Exam
Apr 15, 2015
Communication to designated inventor
Search/Exam
Apr 15, 2015
Communication to designated inventor
Search/Exam
Apr 15, 2015
Communication to designated inventor
Search/Exam
Mar 23, 2015
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Notification of forthcoming publication
Search/Exam
Feb 10, 2015
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Jan 13, 2015
Enquiry with the International Bureau
Search/Exam
Dec 12, 2014
(Electronic) Receipt
Search/Exam
Dec 12, 2014
Abstract
Search/Exam
Dec 12, 2014
Dec 12, 2014
Amended claims with annotations
Search/Exam
Dec 12, 2014
Claims
Search/Exam
Dec 12, 2014
Converted Sequence Listing
Search/Exam
Dec 12, 2014
Description
Search/Exam
Dec 12, 2014
Drawings
Search/Exam
Dec 12, 2014
Request for entry into the European phase
Search/Exam
Apr 1, 2014
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Mar 13, 2014
Converted Sequence Listing
Search/Exam
Mar 13, 2014
Copy of the international search report
Search/Exam
Mar 13, 2014
Mar 13, 2014
International publication pamphlet
Search/Exam