The weekly litigation news digest is live. Subscribe now
The patent EP2998325 was granted to Sumitomo Seika Chemicals on Nov 4, 2020. The application was filed on Nov 4, 2014 under application number EP14893695A. 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 |
|---|---|---|---|
| NIPPON SHOKUBAI | Jun 20, 2018 | HOFFMANN EITLE | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2000230129 |
| DESCRIPTION | JP2000327926 |
| DESCRIPTION | JP2006176570 |
| DESCRIPTION | JPH0586251 |
| DESCRIPTION | JPH06184320 |
| DESCRIPTION | WO2008133396 |
| INTERNATIONAL-SEARCH-REPORT | JP2012031292 |
| INTERNATIONAL-SEARCH-REPORT | JP2012236898 |
| INTERNATIONAL-SEARCH-REPORT | JPH11335404 |
| INTERNATIONAL-SEARCH-REPORT | JPS61271303 |
| INTERNATIONAL-SEARCH-REPORT | JPS6438406 |
| INTERNATIONAL-SEARCH-REPORT | WO2014038324 |
| OPPOSITION | EP0733648 |
| OPPOSITION | EP0942014 |
| OPPOSITION | EP1426402 |
| OPPOSITION | EP1795211 |
| OPPOSITION | EP2615117 |
| OPPOSITION | EP2692744 |
| OPPOSITION | EP2993190 |
| OPPOSITION | JP2000026510 |
| OPPOSITION | JP2009280668 |
| OPPOSITION | JP2012012451 |
| OPPOSITION | WO03051940 |
| SEARCH | EP0288865 |
| SEARCH | EP0942014 |
| SEARCH | JP2012236898 |
| SEARCH | US2009275470 |
| SEARCH | US6469080 |
| SEARCH | WO03059961 |
| SEARCH | WO2006109882 |
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
Get instant alerts for new documents
Oct 8, 2020
Oct 8, 2020
Oct 2, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Sep 24, 2020
Jul 9, 2020
Jul 9, 2020
Jul 6, 2020
Jan 17, 2020
Jan 14, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Means of redress
OPPO
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Jan 13, 2020
Nov 29, 2019
Nov 28, 2019
Nov 26, 2019
(Electronic) Receipt
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Amended claims with annotations
Search/Exam
Nov 26, 2019
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Claims
Search/Exam
Nov 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 26, 2019
Nov 13, 2019
Nov 8, 2019
Nov 8, 2019
Nov 8, 2019
Nov 8, 2019
Nov 8, 2019
Nov 8, 2019
Nov 8, 2019
Oct 8, 2019
Oct 1, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 27, 2019
Sep 25, 2019
Sep 24, 2019
Sep 24, 2019
Sep 24, 2019
Sep 19, 2019
Sep 19, 2019
Sep 19, 2019
Mar 5, 2019
Mar 4, 2019
Feb 28, 2019
Feb 27, 2019
Feb 27, 2019
Feb 27, 2019
Feb 27, 2019
Feb 27, 2019
Feb 27, 2019
Feb 27, 2019
Feb 26, 2019
Feb 22, 2019
Feb 21, 2019
Feb 21, 2019
Feb 21, 2019
Feb 21, 2019
Feb 21, 2019
Feb 21, 2019
Feb 21, 2019
Feb 14, 2019
Feb 14, 2019
Feb 14, 2019
Feb 14, 2019
Feb 14, 2019
Feb 14, 2019
Feb 13, 2019
Nov 16, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Claims
OPPO
Nov 12, 2018
Nov 12, 2018
Jul 2, 2018
Jul 2, 2018
Jun 26, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Jun 20, 2018
Sep 20, 2017
Aug 24, 2017
Decision to grant a European patent
Search/Exam
Aug 11, 2017
(Electronic) Receipt
Search/Exam
Aug 11, 2017
Filing of the translations of the claims
Search/Exam
Aug 11, 2017
French translation of claims
Search/Exam
Aug 11, 2017
German translation of the claims
Search/Exam
Jun 20, 2017
Jun 20, 2017
Jun 20, 2017
Intention to grant (signatures)
Search/Exam
Jun 20, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 20, 2017
May 10, 2017
(Electronic) Receipt
Search/Exam
May 10, 2017
Amended claims with annotations
Search/Exam
May 10, 2017
Amended description with annotations
Search/Exam
May 10, 2017
Claims
Search/Exam
May 10, 2017
Description
Search/Exam
May 10, 2017
Letter accompanying subsequently filed items
Search/Exam
May 10, 2017
Mar 27, 2017
Annex to the communication
Search/Exam
Mar 27, 2017
Communication from the Examining Division
Search/Exam
Feb 15, 2017
Communication to designated inventor
Search/Exam
Feb 15, 2017
Communication to designated inventor
Search/Exam
Feb 15, 2017
Communication to designated inventor
Search/Exam
Feb 15, 2017
Communication to designated inventor
Search/Exam
Jan 30, 2017
Jan 30, 2017
Jan 27, 2017
Jan 13, 2017
Non-patent literature filed by a third party
Search/Exam
Jan 13, 2017
Observations by third parties
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Jan 13, 2017
Patent document filed by a Third party
Search/Exam
Dec 16, 2016
(Electronic) Receipt
Search/Exam
Dec 16, 2016
Amended claims with annotations
Search/Exam
Dec 16, 2016
Claims
Search/Exam
Dec 16, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 16, 2016
Nov 23, 2016
Nov 16, 2016
(Electronic) Receipt
Search/Exam
Nov 16, 2016
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2016
Jul 12, 2016
Annex to the communication
Search/Exam
Jul 12, 2016
Communication from the Examining Division
Search/Exam
Jun 22, 2016
Jun 22, 2016
Information on Search Strategy
Search/Exam
Jun 22, 2016
Supplementary European search report
Search/Exam
Jun 10, 2016
Search started
Search/Exam
Apr 28, 2016
Apr 22, 2016
Non-patent literature filed by a third party
Search/Exam
Apr 22, 2016
Non-patent literature filed by a third party
Search/Exam
Apr 22, 2016
Non-patent literature filed by a third party
Search/Exam
Apr 22, 2016
Observations by third parties
Search/Exam
Apr 11, 2016
Apr 11, 2016
Mar 2, 2016
Refund of fees
Search/Exam
Feb 24, 2016
Notification of forthcoming publication
Search/Exam
Feb 12, 2016
Submission concerning representation
Search/Exam
Feb 8, 2016
Feb 8, 2016
Feb 1, 2016
Feb 1, 2016
Jan 14, 2016
Copy of the international search report
Search/Exam
Jan 14, 2016
Jan 14, 2016
International publication pamphlet
Search/Exam
Dec 9, 2015
(Electronic) Receipt
Search/Exam
Dec 9, 2015
Abstract
Search/Exam
Dec 9, 2015
Claims
Search/Exam
Dec 9, 2015
Description
Search/Exam
Dec 9, 2015
Drawings
Search/Exam
Dec 9, 2015
Matter concerning the application
Search/Exam
Dec 9, 2015
Request for entry into the European phase
Search/Exam