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The patent EP2603454 was granted to Imerys Graphite & Carbon Switerland on Nov 25, 2020. The application was filed on Aug 11, 2011 under application number EP11741607A. 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 |
|---|---|---|---|
| SGL CARBON | Sep 6, 2018 | BOTZENHARDT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CH359662 |
| DESCRIPTION | DE10014749 |
| DESCRIPTION | DE10049230 |
| DESCRIPTION | DE19904657 |
| DESCRIPTION | DE3432780 |
| DESCRIPTION | EP0223963 |
| DESCRIPTION | EP0310980 |
| DESCRIPTION | EP0469725 |
| DESCRIPTION | EP0729383 |
| DESCRIPTION | EP0735123 |
| DESCRIPTION | EP1227732 |
| DESCRIPTION | EP1230004 |
| DESCRIPTION | JP4113746B |
| DESCRIPTION | US2007031704 |
| DESCRIPTION | US2008279710 |
| DESCRIPTION | US2009189125 |
| DESCRIPTION | US3894882 |
| DESCRIPTION | US5030433 |
| DESCRIPTION | US7449030 |
| DESCRIPTION | WO0103807 |
| EXAMINATION | EP1749805 |
| EXAMINATION | JP2006128027 |
| INTERNATIONAL-SEARCH-REPORT | EP0735123 |
| INTERNATIONAL-SEARCH-REPORT | US2008279710 |
| INTERNATIONAL-SEARCH-REPORT | US2009189125 |
| INTERNATIONAL-SEARCH-REPORT | US3666455 |
| INTERNATIONAL-SEARCH-REPORT | US6620359 |
| OPPOSITION | EP0735123 |
| OPPOSITION | EP0745571 |
| OPPOSITION | EP1749805 |
| OPPOSITION | JP2006128027 |
| OPPOSITION | US2008279710 |
| OPPOSITION | US3666455 |
| OPPOSITION | US4400433 |
| OPPOSITION | US6620359 |
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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Oct 29, 2020
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Means of redress
OPPO
Mar 26, 2020
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Claims
OPPO
Jan 30, 2019
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Sep 20, 2018
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Dec 14, 2017
Nov 9, 2017
Decision to grant a European patent
Search/Exam
Oct 23, 2017
(Electronic) Receipt
Search/Exam
Oct 23, 2017
Filing of the translations of the claims
Search/Exam
Oct 23, 2017
French translation of claims
Search/Exam
Oct 23, 2017
German translation of the claims
Search/Exam
Oct 23, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 21, 2017
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Intention to grant (signatures)
Search/Exam
Jun 21, 2017
Text intended for grant (clean copy)
Search/Exam
Jun 21, 2017
Jun 13, 2017
Annex to a communication
Search/Exam
Jun 13, 2017
Annex to a communication
Search/Exam
Jun 13, 2017
Annex to the communication
Search/Exam
Jun 13, 2017
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Apr 28, 2017
(Electronic) Receipt
Search/Exam
Apr 28, 2017
Amended claims with annotations
Search/Exam
Apr 28, 2017
Claims
Search/Exam
Apr 28, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2017
Apr 28, 2017
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Sep 22, 2016
Advice of delivery
Search/Exam
Sep 9, 2016
Advice of delivery
Search/Exam
Sep 2, 2016
Acknowledgement of a document
Search/Exam
Sep 2, 2016
Annex to the communication
Search/Exam
Sep 2, 2016
Preparation for oral proceedings
Search/Exam
Sep 2, 2016
Summons to attend oral proceedings
Search/Exam
Apr 25, 2016
Apr 13, 2016
(Electronic) Receipt
Search/Exam
Apr 13, 2016
Apr 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 29, 2015
(Electronic) Receipt
Search/Exam
Dec 29, 2015
Amended claims with annotations
Search/Exam
Dec 29, 2015
Claims
Search/Exam
Dec 29, 2015
Letter accompanying subsequently filed items
Search/Exam
Dec 29, 2015
Dec 29, 2015
Jul 2, 2015
Annex to the communication
Search/Exam
Jul 2, 2015
Communication from the Examining Division
Search/Exam
Aug 8, 2014
(Electronic) Receipt
Search/Exam
Aug 8, 2014
Claims
Search/Exam
Aug 8, 2014
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2014
Jul 9, 2014
Jun 17, 2014
Annexes in respect of a client data request
Search/Exam
Jun 17, 2014
Annexes in respect of a client data request
Search/Exam
Jun 17, 2014
Letter accompanying subsequently filed items
Search/Exam
Jun 17, 2014
Apr 23, 2014
Annex to the communication
Search/Exam
Apr 23, 2014
Communication from the Examining Division
Search/Exam
Mar 14, 2014
Submission concerning representation
Search/Exam
Mar 12, 2014
Submission concerning representation
Search/Exam
May 23, 2013
Apr 12, 2013
Communication to designated inventor
Search/Exam
Apr 5, 2013
(Electronic) Receipt
Search/Exam
Apr 5, 2013
Letter accompanying subsequently filed items
Search/Exam
Apr 5, 2013
Letter concerning the inventor
Search/Exam
Apr 2, 2013
Mar 25, 2013
Letter which had not been notified
Search/Exam
Mar 19, 2013
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 15, 2013
Communication to designated inventor
Search/Exam
Mar 12, 2013
Priority search results copy provided by EPO
Search/Exam
Mar 1, 2013
(Electronic) Receipt
Search/Exam
Mar 1, 2013
Mar 1, 2013
Amended claims with annotations
Search/Exam
Mar 1, 2013
Request for entry into the European phase
Search/Exam
Feb 26, 2013
Dec 21, 2012
Information on entry into European phase
Search/Exam
Mar 6, 2012
Mar 6, 2012
Feb 16, 2012
Copy of the international search report
Search/Exam
Feb 16, 2012
Published international application - A1
Search/Exam
Nov 7, 2011
Nov 7, 2011
Nov 7, 2011
Aug 11, 2011
(Electronic) Receipt
PCTRO
Aug 11, 2011
Abstract
PCTRO
Aug 11, 2011
Claims
PCTRO
Aug 11, 2011
Description
PCTRO
Aug 11, 2011
Drawings
PCTRO
Aug 11, 2011