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The patent EP2658509 was granted to KAO Germany on May 16, 2018. The application was originally filed on Dec 23, 2011 under application number EP11805862A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US2004221401 |
| INTERNATIONAL-SEARCH-REPORT | EP1462092 |
| INTERNATIONAL-SEARCH-REPORT | US2004253283 |
| INTERNATIONAL-SEARCH-REPORT | US2005011017 |
| INTERNATIONAL-SEARCH-REPORT | US2005129644 |
| INTERNATIONAL-SEARCH-REPORT | US5961667 |
| INTERNATIONAL-SEARCH-REPORT | WO03053386 |
| OPPOSITION | EP0107159 |
| OPPOSITION | EP2196183 |
| OPPOSITION | FR2852828 |
| OPPOSITION | FR2852834 |
| OPPOSITION | US2004221401 |
| OPPOSITION | WO0147486 |
| OPPOSITION | WO02089754 |
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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Jun 9, 2021
Advice of delivery
Appeal
Jun 7, 2021
May 20, 2021
May 4, 2021
Apr 9, 2021
Mar 12, 2021
Advice of delivery
Appeal
Mar 9, 2021
Mar 9, 2021
Mar 9, 2021
Nov 27, 2020
Nov 27, 2020
Nov 10, 2020
Nov 10, 2020
Sep 15, 2020
Jun 12, 2020
Jun 8, 2020
(Electronic) Receipt
Appeal
Jun 8, 2020
Jun 8, 2020
Jun 8, 2020
Jun 8, 2020
Reply to appeal
Appeal
Jan 30, 2020
Jan 29, 2020
Jan 29, 2020
Claims
Appeal
Jan 29, 2020
Jan 27, 2020
Nov 14, 2019
Nov 12, 2019
Nov 12, 2019
Notice of appeal
Appeal
Nov 7, 2019
Notice of appeal
Appeal
Oct 1, 2019
Sep 24, 2019
Sep 24, 2019
Sep 23, 2019
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Sep 20, 2019
Means of redress
OPPO
Feb 27, 2019
Feb 27, 2019
Feb 20, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
May 30, 2018
Apr 19, 2018
Decision to grant a European patent
Search/Exam
Apr 4, 2018
(Electronic) Receipt
Search/Exam
Apr 4, 2018
French translation of claims
Search/Exam
Apr 4, 2018
German translation of the claims
Search/Exam
Apr 4, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 23, 2018
Feb 23, 2018
Feb 23, 2018
Intention to grant (signatures)
Search/Exam
Feb 23, 2018
Text intended for grant (clean copy)
Search/Exam
Feb 23, 2018
Feb 1, 2018
Jan 22, 2018
Jan 18, 2018
Nov 17, 2017
Advice of delivery
Search/Exam
Nov 13, 2017
Advice of delivery
Search/Exam
Nov 10, 2017
Acknowledgement of a document
Search/Exam
Nov 10, 2017
Summons to attend oral proceedings
Search/Exam
Jul 17, 2017
Advice of delivery
Search/Exam
Jul 17, 2017
Advice of delivery
Search/Exam
Jul 14, 2017
Acknowledgement of a document
Search/Exam
Jul 14, 2017
Annex to the communication
Search/Exam
Jul 14, 2017
Summons to attend oral proceedings
Search/Exam
Jul 4, 2017
Preparation for oral proceedings
Search/Exam
Nov 8, 2016
Amended claims with annotations
Search/Exam
Nov 8, 2016
Claims
Search/Exam
Nov 8, 2016
Nov 8, 2016
Nov 4, 2016
Amended claims with annotations
Search/Exam
Nov 4, 2016
Claims
Search/Exam
Nov 4, 2016
Nov 4, 2016
Sep 9, 2016
Sep 6, 2016
Sep 5, 2016
Apr 25, 2016
Annex to the communication
Search/Exam
Apr 25, 2016
Communication from the Examining Division
Search/Exam
Apr 15, 2016
Examination started
Search/Exam
Dec 30, 2014
Payment of fees and costs
Search/Exam
Dec 30, 2014
Payment of fees and costs
Search/Exam
Mar 22, 2014
Mar 22, 2014
Amendments received before examination
Search/Exam
Mar 21, 2014
Mar 21, 2014
Amendments received before examination
Search/Exam
Dec 13, 2013
(Electronic) Receipt
Search/Exam
Dec 13, 2013
Letter accompanying subsequently filed items
Search/Exam
Oct 9, 2013
Sep 11, 2013
Sep 4, 2013
Priority search results copy provided by EPO
Search/Exam
Aug 22, 2013
Letter which had not been notified
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Aug 2, 2013
Communication to designated inventor
Search/Exam
Jul 17, 2013
Jul 11, 2013
(Electronic) Receipt
Search/Exam
Jul 11, 2013
Annexes in respect of a client data request
Search/Exam
Jul 11, 2013
Request for entry into the European phase
Search/Exam
May 13, 2013
Information on entry into European phase
Search/Exam
Sep 27, 2012
Copy of the international search report
Search/Exam
Sep 27, 2012
Aug 16, 2012
Aug 16, 2012
Aug 16, 2012
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