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The patent EP2292668 was granted to The Lubrizol on Sep 10, 2025. The application was filed on Oct 21, 2005 under application number EP10010731A. 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 |
|---|---|---|---|
| NEW MARKET SERVICES | Dec 20, 2019 | SSM SANDMAIR | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6369162 |
| DESCRIPTION | US6596899 |
| DESCRIPTION | US6642318 |
| DESCRIPTION | WO0002939 |
| DESCRIPTION | WO9801478 |
| EXAMINATION | DE10314776 |
| EXAMINATION | EP0425027 |
| EXAMINATION | EP1533327 |
| EXAMINATION | US2006189490 |
| EXAMINATION | US4077893 |
| EXAMINATION | US5552491 |
| EXAMINATION | US6369162 |
| EXAMINATION | WO2004087850 |
| EXAMINATION | WO2005056739 |
| EXAMINATION | WO2006047398 |
| OPPOSITION | EP0425027 |
| OPPOSITION | US2006189490 |
| OPPOSITION | US4077893 |
| OPPOSITION | US6369162 |
| OPPOSITION | WO2006047393 |
| OTHER | EP1833852 |
| OTHER | US4077893 |
| OTHER | WO2006047393 |
| SEARCH | DE10314776 |
| SEARCH | EP1533327 |
| SEARCH | US2004106732 |
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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Letter accompanying subsequently filed items
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Reply to appeal
Appeal
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Refund of fees
Appeal
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Appeal
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Notice of appeal
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OPPO
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Apr 1, 2019
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Decision to grant a European patent
Search/Exam
Feb 8, 2019
(Electronic) Receipt
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Feb 8, 2019
Filing of the translations of the claims
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Feb 8, 2019
French translation of claims
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German translation of the claims
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Feb 8, 2019
Letter accompanying subsequently filed items
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Oct 9, 2018
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Intention to grant (signatures)
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Oct 9, 2018
Text intended for grant (clean copy)
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Oct 9, 2018
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Annex to a communication
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Annex to a communication
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Annex to the communication
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(Electronic) Receipt
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Sep 19, 2018
Letter accompanying subsequently filed items
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Sep 19, 2018
Observations by third parties
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Aug 31, 2018
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(Electronic) Receipt
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Aug 20, 2018
Amended claims with annotations
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Amended claims with annotations
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Amended claims with annotations
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Claims
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Letter accompanying subsequently filed items
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Matter concerning the application
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Matter concerning the application
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Matter concerning the application
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Feb 28, 2018
Advice of delivery
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Feb 21, 2018
Dec 7, 2017
Acknowledgement of a document
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Dec 7, 2017
Annex to the communication
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Dec 7, 2017
Preparation for oral proceedings
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Dec 7, 2017
Summons to attend oral proceedings
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(Electronic) Receipt
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Nov 21, 2017
Letter accompanying subsequently filed items
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Nov 21, 2017
Observations by third parties
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Nov 21, 2017
Patent document filed by a Third party
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Nov 21, 2017
Patent document filed by a Third party
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Nov 21, 2017
Patent document filed by a Third party
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Nov 21, 2017
Patent document filed by a Third party
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Jul 24, 2017
(Electronic) Receipt
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Jul 24, 2017
Letter accompanying subsequently filed items
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Jul 24, 2017
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(Electronic) Receipt
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Annex to the communication
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Jan 16, 2017
Communication from the Examining Division
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Oct 21, 2016
(Electronic) Receipt
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Oct 21, 2016
Amended description with annotations
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Oct 21, 2016
Description
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Oct 21, 2016
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Aug 19, 2016
Apr 22, 2016
Annex to the communication
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Apr 22, 2016
Communication from the Examining Division
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Jan 29, 2016
Decision to allow further processing
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Jan 29, 2016
Decision to allow further processing
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Jan 8, 2016
(Electronic) Receipt
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Jan 8, 2016
Letter accompanying subsequently filed items
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Jan 8, 2016
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Request for further processing
Search/Exam
Nov 9, 2015
Jul 23, 2015
Jul 17, 2015
(Electronic) Receipt
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Jul 17, 2015
Jul 9, 2015
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Mar 26, 2015
Annex to the communication
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Mar 26, 2015
Communication from the Examining Division
Search/Exam
Jan 16, 2015
Jan 16, 2015
Dec 22, 2014
Observations by third parties
Search/Exam
Sep 26, 2014
(Electronic) Receipt
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Sep 26, 2014
Amended claims with annotations
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Sep 26, 2014
Amended description with annotations
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Sep 26, 2014
Claims
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Sep 26, 2014
Description
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Sep 26, 2014
Letter accompanying subsequently filed items
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Sep 26, 2014
May 16, 2014
Annex to the communication
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May 16, 2014
Communication from the Examining Division
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Mar 17, 2014
Annex to the communication
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Mar 17, 2014
Consultation by telephone/in person
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Mar 17, 2014
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Feb 13, 2014
Jan 31, 2014
Observations by third parties
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Jan 6, 2014
(Electronic) Receipt
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Jan 6, 2014
Amended description with annotations
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Jan 6, 2014
Description
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Jan 6, 2014
Letter accompanying subsequently filed items
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Jan 6, 2014
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Nov 27, 2013
Annex to the communication
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Nov 27, 2013
Communication from the Examining Division
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Nov 4, 2013
(Electronic) Receipt
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Nov 4, 2013
Amended claims with annotations
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Nov 4, 2013
Claims
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Nov 4, 2013
Letter accompanying subsequently filed items
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Nov 4, 2013
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Annex to the communication
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Jul 4, 2013
Communication from the Examining Division
Search/Exam
Feb 14, 2013
Feb 8, 2013
Aug 27, 2012
Aug 27, 2012
Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-patent literature filed by a third party
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Aug 9, 2012
Non-scannable object
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Aug 9, 2012
Observations by third parties
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Aug 9, 2012
Patent document filed by a Third party
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Aug 9, 2012
Patent document filed by a Third party
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Aug 9, 2012
Patent document filed by a Third party
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Aug 9, 2012
Patent document filed by a Third party
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Jun 1, 2012
(Electronic) Receipt
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Jun 1, 2012
Amended claims with annotations
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Jun 1, 2012
Claims
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Jun 1, 2012
Letter accompanying subsequently filed items
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Jun 1, 2012
Apr 4, 2012
Mar 29, 2012
(Electronic) Receipt
Search/Exam
Mar 29, 2012
Letter accompanying subsequently filed items
Search/Exam
Dec 7, 2011
Annex to the communication
Search/Exam
Dec 7, 2011
Communication from the Examining Division
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Sep 2, 2011
(Electronic) Receipt
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Sep 2, 2011
Sep 2, 2011
Amended claims with annotations
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Sep 2, 2011
Sep 2, 2011
Amended description with annotations
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Sep 2, 2011
Amendments received before examination
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Sep 2, 2011
Letter accompanying subsequently filed items
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Mar 14, 2011
Feb 9, 2011
Notification of forthcoming publication
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Jan 31, 2011
Jan 31, 2011
European search opinion
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Jan 31, 2011
European search report
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Jan 25, 2011
Modified abstract
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Jan 10, 2011
(Electronic) Receipt
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Jan 10, 2011
Designation of inventor
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Jan 10, 2011
Letter accompanying subsequently filed items
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Oct 11, 2010
Sep 27, 2010
Abstract
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Sep 27, 2010
Claims
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Sep 27, 2010
Description
Search/Exam
Sep 27, 2010
Letter concerning search matters
Search/Exam
Sep 27, 2010
Matter concerning the application
Search/Exam
Sep 27, 2010
May 26, 2006