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The patent EP2658508 was granted to KAO Germany on Jun 19, 2024. The application was originally filed on Dec 23, 2011 under application number EP11801755A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE4430521 |
| INTERNATIONAL-SEARCH-REPORT | EP0763355 |
| INTERNATIONAL-SEARCH-REPORT | EP2204160 |
| OPPOSITION | EP1366753 |
| OPPOSITION | EP1935456 |
| OPPOSITION | JP2000297018 |
| OPPOSITION | JP2003081790 |
| OPPOSITION | WO2009019048 |
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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May 24, 2024
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OPPO
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OPPO
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Decision to grant a European patent
Search/Exam
May 6, 2021
(Electronic) Receipt
Search/Exam
May 6, 2021
French translation of claims
Search/Exam
May 6, 2021
German translation of the claims
Search/Exam
May 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 11, 2021
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Intention to grant (signatures)
Search/Exam
Mar 11, 2021
Text intended for grant (clean copy)
Search/Exam
Mar 11, 2021
Jul 21, 2020
Claims
Search/Exam
Jul 21, 2020
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Claims
Search/Exam
Jul 20, 2020
Mar 30, 2020
Annex to the communication
Search/Exam
Mar 30, 2020
Communication from the Examining Division
Search/Exam
Nov 25, 2019
Claims
Search/Exam
Nov 25, 2019
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Claims
Search/Exam
Nov 20, 2019
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Annex to the communication
Search/Exam
Jul 17, 2019
Communication from the Examining Division
Search/Exam
Feb 18, 2019
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Annex to the communication
Search/Exam
Oct 10, 2018
Communication from the Examining Division
Search/Exam
Mar 16, 2018
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Annex
Search/Exam
Mar 15, 2018
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Annex to the communication
Search/Exam
Aug 8, 2017
Communication from the Examining Division
Search/Exam
Aug 12, 2016
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Annex to the communication
Search/Exam
Feb 8, 2016
Communication from the Examining Division
Search/Exam
Dec 30, 2014
Payment of fees and costs
Search/Exam
Dec 30, 2014
Payment of fees and costs
Search/Exam
Mar 18, 2014
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 14, 2014
Reply to Written Opinion prepared by the EPO
Search/Exam
Dec 13, 2013
(Electronic) Receipt
Search/Exam
Dec 13, 2013
Letter concerning fees and payments
Search/Exam
Oct 9, 2013
Sep 5, 2013
Sep 2, 2013
Aug 29, 2013
Letter which had not been notified
Search/Exam
Aug 29, 2013
Priority search results copy provided by EPO
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Jul 17, 2013
Jul 3, 2013
(Electronic) Receipt
Search/Exam
Jul 3, 2013
Annexes in respect of a client data request
Search/Exam
Jul 3, 2013
Request for entry into the European phase
Search/Exam
May 13, 2013
Information on entry into European phase
Search/Exam
Jan 24, 2013
Copy of the international search report
Search/Exam
Jan 24, 2013
Dec 12, 2012
Dec 12, 2012
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Jul 25, 2012
Jul 5, 2012
Published international application - A2
Search/Exam
Dec 23, 2011
(Electronic) Receipt
PCTRO
Dec 23, 2011
Abstract
PCTRO
Dec 23, 2011
Claims
PCTRO
Dec 23, 2011
Description
PCTRO
Dec 23, 2011