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The patent EP2067705 was granted to Kureha on Oct 4, 2023. The application was filed on Sep 28, 2007 under application number EP07828737A. 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 |
|---|---|---|---|
| ISARPATENT | Feb 25, 2019 | ISARPATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2003535733 |
| INTERNATIONAL-SEARCH-REPORT | JP2004115066 |
| INTERNATIONAL-SEARCH-REPORT | JP2006224470 |
| OPPOSITION | EP1557372 |
| OPPOSITION | JP2006224470 |
| OPPOSITION | US2002172834 |
| OPPOSITION | US2003157350 |
| OPPOSITION | US2005173289 |
| SEARCH | US2002172834 |
| SEARCH | US2003157350 |
| SEARCH | US2005173289 |
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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Sep 7, 2023
Sep 7, 2023
Sep 1, 2023
Aug 24, 2023
Aug 24, 2023
Aug 24, 2023
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Aug 24, 2023
Jun 21, 2023
Jun 21, 2023
Jun 21, 2023
Refund of fees
Appeal
Jun 20, 2023
Jun 20, 2023
Jun 20, 2023
Jun 20, 2023
Jun 20, 2023
Jun 16, 2023
May 17, 2023
(Electronic) Receipt
Appeal
May 17, 2023
May 17, 2023
May 17, 2023
May 10, 2023
(Electronic) Receipt
Appeal
May 10, 2023
May 10, 2023
May 10, 2023
Mar 31, 2023
Advice of delivery
Appeal
Mar 31, 2023
Mar 31, 2023
Mar 31, 2023
Mar 27, 2023
Mar 27, 2023
Mar 22, 2023
Mar 22, 2023
Jul 28, 2022
Jul 25, 2022
(Electronic) Receipt
Appeal
Jul 25, 2022
Jul 25, 2022
Jul 25, 2022
Jul 25, 2022
Jul 25, 2022
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Jul 25, 2022
Jul 25, 2022
Reply to appeal
Appeal
Mar 28, 2022
Mar 22, 2022
(Electronic) Receipt
Appeal
Mar 22, 2022
Mar 22, 2022
Mar 22, 2022
Mar 22, 2022
Jan 28, 2022
Jan 28, 2022
Jan 21, 2022
(Electronic) Receipt
Appeal
Jan 21, 2022
Jan 21, 2022
Notice of appeal
Appeal
Nov 17, 2021
Nov 12, 2021
Nov 12, 2021
Nov 12, 2021
Nov 12, 2021
Nov 12, 2021
Nov 12, 2021
Means of redress
OPPO
Nov 12, 2021
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Description
OPPO
Jul 28, 2021
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Jun 4, 2018
Apr 26, 2018
Decision to grant a European patent
Search/Exam
Apr 10, 2018
(Electronic) Receipt
Search/Exam
Apr 10, 2018
Filing of the translations of the claims
Search/Exam
Apr 10, 2018
French translation of claims
Search/Exam
Apr 10, 2018
German translation of the claims
Search/Exam
Jan 19, 2018
Jan 12, 2018
(Electronic) Receipt
Search/Exam
Jan 12, 2018
Jan 12, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 12, 2018
Jan 4, 2018
(Electronic) Receipt
Search/Exam
Jan 4, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2018
Dec 19, 2017
Dec 19, 2017
Dec 19, 2017
Intention to grant (signatures)
Search/Exam
Dec 19, 2017
Text intended for grant (clean copy)
Search/Exam
Dec 19, 2017
Dec 4, 2017
Oct 26, 2017
(Electronic) Receipt
Search/Exam
Oct 26, 2017
Claims
Search/Exam
Oct 26, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 26, 2017
Oct 25, 2017
Oct 19, 2017
(Electronic) Receipt
Search/Exam
Oct 19, 2017
Claims
Search/Exam
Oct 19, 2017
Description
Search/Exam
Oct 19, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2017
Jun 22, 2017
Jun 22, 2017
Jun 22, 2017
Intention to grant (signatures)
Search/Exam
Jun 22, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 22, 2017
May 18, 2017
Examination started
Search/Exam
Jun 28, 2016
(Electronic) Receipt
Search/Exam
Jun 28, 2016
Jun 28, 2016
Jun 28, 2016
Amendments received before examination
Search/Exam
Jun 28, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 11, 2016
Feb 24, 2016
Feb 24, 2016
European search opinion
Search/Exam
Feb 24, 2016
Information on Search Strategy
Search/Exam
Feb 24, 2016
Supplementary European search report
Search/Exam
Feb 11, 2016
Search started
Search/Exam
Oct 5, 2015
Sep 29, 2015
(Electronic) Receipt
Search/Exam
Sep 29, 2015
Sep 29, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2015
Aug 20, 2015
Aug 19, 2015
Sep 26, 2014
Submission concerning representation
Search/Exam
May 13, 2009
Notification of forthcoming publication
Search/Exam
May 12, 2009
May 8, 2009
Apr 21, 2009
Mar 31, 2009
Abstract
Search/Exam
Mar 31, 2009
Claims
Search/Exam
Mar 31, 2009
Description
Search/Exam
Mar 31, 2009
Mar 31, 2009
Request for entry into the European phase
Search/Exam
Feb 5, 2009
Information on entry into European phase
Search/Exam
Jan 7, 2009
Notification of the recording of a change
Search/Exam
Apr 25, 2008
Apr 3, 2008
Copy of the international search report
Search/Exam
Apr 3, 2008
Apr 3, 2008
International publication pamphlet
Search/Exam