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The patent EP2611767 was granted to Stepan Specialty Products on Oct 25, 2017. The application was filed on Sep 2, 2011 under application number EP11822699A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| AAK | Jul 25, 2018 | HAMER | ADMISSIBLE |
| KRAUS & LEDERER PARTGMBB | Jul 25, 2018 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
| BUNGE LODERS CROKLAAN | Jul 24, 2018 | POTTER CLARKSON | ADMISSIBLE |
| CARGILL | Jul 19, 2018 | RUPP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | FR2779447 |
| INTERNATIONAL-SEARCH-REPORT | US2003225295 |
| INTERNATIONAL-SEARCH-REPORT | US2009023808 |
| INTERNATIONAL-SEARCH-REPORT | US4025540 |
| INTERNATIONAL-SEARCH-REPORT | WO2011002275 |
| OPPOSITION | DE102010007138 |
| OPPOSITION | EP0361595 |
| OPPOSITION | EP2471897 |
| OPPOSITION | EP2548942 |
| OPPOSITION | EP2594625 |
| OPPOSITION | GB764833 |
| OPPOSITION | US1885281 |
| OPPOSITION | US2197339 |
| OPPOSITION | US3413324 |
| OPPOSITION | US4025540 |
| OPPOSITION | US4157405 |
| OPPOSITION | US4280962 |
| OPPOSITION | US5315021 |
| OPPOSITION | US6111120 |
| OPPOSITION | WO2009115248 |
| OPPOSITION | WO2010080019 |
| OPPOSITION | WO2010126136 |
| OPPOSITION | WO2011040539 |
| OPPOSITION | WO2011055732 |
| OPPOSITION | WO2012031176 |
| SEARCH | WO2005021476 |
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.
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Description
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Intention to grant (signatures)
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Mar 15, 2017
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Mar 15, 2017
Mar 2, 2017
Examination started
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(Electronic) Receipt
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Amended claims with annotations
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Jan 5, 2015
Amended claims with annotations
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Jan 5, 2015
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Jan 5, 2015
Letter accompanying subsequently filed items
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European search opinion
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Supplementary European search report
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May 8, 2014
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Apr 9, 2014
(Electronic) Receipt
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Apr 9, 2014
Annex
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Apr 9, 2014
Letter accompanying subsequently filed items
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Apr 9, 2014
Jan 30, 2014
Annex to the communication
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Jan 30, 2014
Jan 24, 2014
Search started
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Nov 7, 2013
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Nov 6, 2013
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Nov 6, 2013
Letter accompanying subsequently filed items
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Jun 12, 2013
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Communication to designated inventor
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Apr 8, 2013
Communication to designated inventor
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Mar 19, 2013
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Annexes in respect of a client data request
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Mar 5, 2013
Payment of fees and costs
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Mar 5, 2013
Feb 21, 2013
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Feb 21, 2013
Annex
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Feb 21, 2013
Request for entry into the European phase
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Feb 21, 2013
Submission concerning representation
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Jan 11, 2013
Information on entry into European phase
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May 11, 2012
Mar 8, 2012
Copy of the international search report
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Mar 8, 2012
Published international application - A1
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