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The patent EP2260876 was granted to Nippon Shokubai on Aug 4, 2021. The application was filed on Sep 17, 2004 under application number EP10183241A. 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 |
|---|---|---|---|
| EVONIK SUPERABSORBER | May 4, 2022 | EVONIK PATENT ASSOCIATION | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0629411 |
| DESCRIPTION | EP0668080 |
| DESCRIPTION | EP0761241 |
| DESCRIPTION | EP0844270 |
| DESCRIPTION | EP1178059 |
| DESCRIPTION | JP2001523287 |
| DESCRIPTION | JP2001523289 |
| DESCRIPTION | JP2002212204 |
| DESCRIPTION | JP2002513043 |
| DESCRIPTION | JP2002513059 |
| DESCRIPTION | JP2002538275 |
| DESCRIPTION | JP2002539281 |
| DESCRIPTION | JPH02255804 |
| DESCRIPTION | JPH02300210 |
| DESCRIPTION | JPH03179008 |
| DESCRIPTION | JPH09124710 |
| DESCRIPTION | JPH09290000 |
| DESCRIPTION | JPH09509591 |
| DESCRIPTION | JPH0977832 |
| DESCRIPTION | JPH10147724 |
| DESCRIPTION | JPH10265582 |
| DESCRIPTION | US2001016668 |
| DESCRIPTION | US4093776 |
| DESCRIPTION | US4367323 |
| DESCRIPTION | US4446261 |
| DESCRIPTION | US4625001 |
| DESCRIPTION | US4683274 |
| DESCRIPTION | US4690996 |
| DESCRIPTION | US4721647 |
| DESCRIPTION | US4738867 |
| DESCRIPTION | US4748076 |
| DESCRIPTION | US4769427 |
| DESCRIPTION | US4873299 |
| DESCRIPTION | US4950692 |
| DESCRIPTION | US5164459 |
| DESCRIPTION | US5478879 |
| DESCRIPTION | US5797893 |
| DESCRIPTION | US5817865 |
| DESCRIPTION | US6110992 |
| DESCRIPTION | US6228930 |
| DESCRIPTION | US6403700 |
| DESCRIPTION | US6596901 |
| DESCRIPTION | WO0053644 |
| DESCRIPTION | WO0166056 |
| DESCRIPTION | WO9522356 |
| DESCRIPTION | WO9848857 |
| EXAMINATION | US6620889 |
| OPPOSITION | EP0349240 |
| OPPOSITION | EP0349241 |
| OPPOSITION | EP0846493 |
| OPPOSITION | EP0874002 |
| OPPOSITION | EP1024176 |
| OPPOSITION | EP1113037 |
| OPPOSITION | JP2002138147 |
| OPPOSITION | JP2003158919 |
| OPPOSITION | JP2003199650 |
| OPPOSITION | JP2004230188 |
| OPPOSITION | JP2004242554 |
| OPPOSITION | JP2004305141 |
| OPPOSITION | JP2006034443 |
| OPPOSITION | JP2527459B |
| OPPOSITION | JPH0258507 |
| OPPOSITION | JPH10295499 |
| OPPOSITION | WO0053664 |
| OPPOSITION | WO2010044281 |
| OTHER | US5264495 |
| OTHER | US5669894 |
| OTHER | US6620889 |
| SEARCH | EP0668080 |
| SEARCH | EP0837076 |
| SEARCH | EP0937739 |
| SEARCH | EP1130045 |
| SEARCH | EP1153656 |
| SEARCH | WO03051415 |
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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Aug 17, 2021
Jul 8, 2021
Decision to grant a European patent
Search/Exam
Jun 29, 2021
(Electronic) Receipt
Search/Exam
Jun 29, 2021
Filing of the translations of the claims
Search/Exam
Jun 29, 2021
French translation of claims
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Jun 29, 2021
German translation of the claims
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Apr 1, 2021
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Intention to grant (signatures)
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Apr 1, 2021
Text intended for grant (clean copy)
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Apr 1, 2021
May 20, 2020
(Electronic) Receipt
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May 20, 2020
Amended description with annotations
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May 20, 2020
Description
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May 20, 2020
Letter accompanying subsequently filed items
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May 20, 2020
Feb 25, 2020
Annex to the communication
Search/Exam
Feb 25, 2020
Feb 25, 2020
Aug 13, 2019
(Electronic) Receipt
Search/Exam
Aug 13, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 13, 2019
Jun 27, 2019
Annex to the communication
Search/Exam
Jun 27, 2019
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Jan 24, 2019
Decision to allow further processing
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Jan 7, 2019
(Electronic) Receipt
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Jan 7, 2019
Amended claims with annotations
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Jan 7, 2019
Claims
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Jan 7, 2019
Letter accompanying subsequently filed items
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Jan 7, 2019
Request for further processing
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Dec 6, 2018
Aug 31, 2018
Aug 27, 2018
(Electronic) Receipt
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Aug 27, 2018
Letter accompanying subsequently filed items
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Aug 27, 2018
Apr 23, 2018
Annex to the communication
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Apr 23, 2018
Communication from the Examining Division
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Sep 27, 2017
(Electronic) Receipt
Search/Exam
Sep 27, 2017
Amended claims with annotations
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Sep 27, 2017
Claims
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Sep 27, 2017
Letter accompanying subsequently filed items
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Sep 27, 2017
Jul 17, 2017
Jul 12, 2017
(Electronic) Receipt
Search/Exam
Jul 12, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2017
Mar 17, 2017
Annex to the communication
Search/Exam
Mar 17, 2017
Communication from the Examining Division
Search/Exam
Jun 1, 2016
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Oct 15, 2015
(Electronic) Receipt
Search/Exam
Oct 15, 2015
Amended claims with annotations
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Oct 15, 2015
Claims
Search/Exam
Oct 15, 2015
Letter accompanying subsequently filed items
Search/Exam
Oct 15, 2015
Jun 22, 2015
Jun 17, 2015
(Electronic) Receipt
Search/Exam
Jun 17, 2015
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2015
Apr 8, 2015
Annex to the communication
Search/Exam
Apr 8, 2015
Communication from the Examining Division
Search/Exam
Mar 30, 2015
Examination started
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Mar 4, 2015
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Feb 2, 2015
Dec 23, 2014
Observations by third parties
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Dec 23, 2014
Patent document filed by a Third party
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Dec 23, 2014
Patent document filed by a Third party
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Dec 23, 2014
Patent document filed by a Third party
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Nov 20, 2013
Submission concerning representation
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Nov 5, 2012
Nov 5, 2012
Oct 19, 2012
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Nov 3, 2011
Refund of fees
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Nov 3, 2011
Refund of fees
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Oct 14, 2011
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Amended claims with annotations
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Oct 14, 2011
Amendments received before examination
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Oct 14, 2011
Amendments received before examination
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Oct 14, 2011
Letter concerning fees and payments
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Oct 13, 2011
Amendments received before examination
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Oct 13, 2011
Letter concerning fees and payments
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Oct 13, 2011
Payment of fees and costs
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Apr 20, 2011
Refund of fees
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Apr 18, 2011
Mar 10, 2011
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European search opinion
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Mar 10, 2011
European search report
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Feb 16, 2011
Letter concerning the inventor
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Jan 14, 2011
Jan 11, 2011
Jan 7, 2011
Letter which had not been notified
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Dec 21, 2010
Dec 21, 2010
Letter which had not been notified
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Dec 17, 2010
Dec 13, 2010
Letter which had not been notified
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Dec 10, 2010
Letter which had not been notified
Search/Exam
Nov 17, 2010
Notification of forthcoming publication
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Nov 2, 2010
Sep 30, 2010
Abstract
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Sep 30, 2010
Sep 30, 2010
Claims
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Sep 30, 2010
Description
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Designation of inventor
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Sep 30, 2010
Request for grant of a European patent
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Apr 20, 2005
Apr 20, 2005