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The patent EP2548941 was granted to KAO on Mar 30, 2022. The application was filed on Feb 25, 2011 under application number EP11756051A. 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 |
|---|---|---|---|
| UPFIELD EUROPE | Mar 27, 2019 | EP&C | - |
| BUNGE LODERS CROKLAAN | Mar 21, 2019 | POTTER CLARKSON | ADMISSIBLE |
| CARGILL | Mar 14, 2019 | ELSEVIERS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2009040854 |
| DESCRIPTION | JPH037240B |
| DESCRIPTION | JPH04261497 |
| INTERNATIONAL-SEARCH-REPORT | JP2006174808 |
| INTERNATIONAL-SEARCH-REPORT | JP2011074358 |
| INTERNATIONAL-SEARCH-REPORT | JPH037240B |
| INTERNATIONAL-SEARCH-REPORT | JPH04261497 |
| OPPOSITION | EP2175030 |
| OPPOSITION | EP2471897 |
| OPPOSITION | EP2548941 |
| OPPOSITION | GB1509664 |
| OPPOSITION | GB707454 |
| OPPOSITION | JP2010060980 |
| OPPOSITION | JP2011195621 |
| OPPOSITION | US2594953 |
| OPPOSITION | WO2009019893 |
| OPPOSITION | WO2011005081 |
| OPPOSITION | WO2011040539 |
| OPPOSITION | WO2011069028 |
| OPPOSITION | WO2011114862 |
| OPPOSITION | WO2012107230 |
| SEARCH | GB1509664 |
| SEARCH | JPH04261497 |
| SEARCH | WO2009115248 |
| SEARCH | WO9964547 |
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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Search/Exam
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(Electronic) Receipt
Search/Exam
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Search/Exam
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Search/Exam
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Search/Exam
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Search/Exam
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Search/Exam
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Amendments received before examination
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European search opinion
Search/Exam
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Supplementary European search report
Search/Exam
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Search started
Search/Exam
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Submission concerning representation
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Notification of forthcoming publication
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Abstract
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Claims
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Description
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Information on entry into European phase
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Copy of the international search report
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International publication pamphlet
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