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The patent EP2571943 was granted to Sachtleben Chemie on Feb 27, 2019. The application was originally filed on May 19, 2011 under application number EP11782026A. 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 |
|---|---|
| DESCRIPTION | EP2050796 |
| INTERNATIONAL-SEARCH-REPORT | WO2005003218 |
| INTERNATIONAL-SEARCH-REPORT | WO2007084245 |
| INTERNATIONAL-SEARCH-REPORT | WO2008023073 |
| OPPOSITION | EP0675128 |
| OPPOSITION | EP0991698 |
| OPPOSITION | US4151154 |
| OPPOSITION | WO0198403 |
| OPPOSITION | WO2005003218 |
| OPPOSITION | WO2007084245 |
| OPPOSITION | WO2008023073 |
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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Nov 4, 2020
Nov 4, 2020
Oct 30, 2020
Aug 11, 2020
Jul 29, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Jul 21, 2020
Means of redress
OPPO
Mar 24, 2020
Mar 20, 2020
Mar 18, 2020
Mar 10, 2020
Mar 2, 2020
Mar 2, 2020
Mar 2, 2020
Sep 30, 2019
Sep 30, 2019
Sep 17, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Sep 12, 2019
Jan 2, 2019
Dec 6, 2018
Nov 28, 2018
Nov 19, 2018
(Electronic) Receipt
Search/Exam
Nov 19, 2018
Annexes in respect of a client data request
Search/Exam
Nov 19, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 19, 2018
Nov 15, 2018
Decision to grant a European patent
Search/Exam
Oct 31, 2018
(Electronic) Receipt
Search/Exam
Oct 31, 2018
English translation of the claims
Search/Exam
Oct 31, 2018
Filing of the translations of the claims
Search/Exam
Oct 31, 2018
French translation of claims
Search/Exam
Oct 31, 2018
Letter accompanying subsequently filed items
Search/Exam
Jun 27, 2018
Jun 27, 2018
Jun 27, 2018
Intention to grant (signatures)
Search/Exam
Jun 27, 2018
Text intended for grant (clean copy)
Search/Exam
Jun 27, 2018
May 7, 2018
(Electronic) Receipt
Search/Exam
May 7, 2018
Amended description with annotations
Search/Exam
May 7, 2018
Description
Search/Exam
May 7, 2018
Letter accompanying subsequently filed items
Search/Exam
May 7, 2018
Jan 17, 2018
Jan 12, 2018
Jan 11, 2018
Annex to the communication
Search/Exam
Jan 11, 2018
Communication from the Examining Division
Search/Exam
Jul 2, 2016
Jul 1, 2016
Mar 30, 2016
Annex to the communication
Search/Exam
Mar 30, 2016
Communication from the Examining Division
Search/Exam
Feb 10, 2016
Submission concerning representation
Search/Exam
Feb 8, 2016
Submission concerning representation
Search/Exam
Apr 17, 2015
(Electronic) Receipt
Search/Exam
Apr 17, 2015
Amended claims with annotations
Search/Exam
Apr 17, 2015
Claims
Search/Exam
Apr 17, 2015
Letter accompanying subsequently filed items
Search/Exam
Apr 17, 2015
Feb 26, 2015
Feb 23, 2015
Feb 20, 2015
Oct 10, 2014
Annex to the communication
Search/Exam
Oct 10, 2014
Communication from the Examining Division
Search/Exam
Jun 2, 2014
Examination started
Search/Exam
Oct 14, 2013
Oct 11, 2013
Aug 26, 2013
Jul 15, 2013
Jul 15, 2013
Amended claims with annotations
Search/Exam
Jul 15, 2013
Amendments received before examination
Search/Exam
Jul 10, 2013
Jul 10, 2013
Amended claims with annotations
Search/Exam
Jul 10, 2013
Amendments received before examination
Search/Exam
Feb 27, 2013
Jan 18, 2013
Jan 16, 2013
Submission concerning representation
Search/Exam
Jan 7, 2013
Jan 3, 2013
Communication to designated inventor
Search/Exam
Jan 3, 2013
Communication to designated inventor
Search/Exam
Nov 27, 2012
Nov 27, 2012
Nov 27, 2012
Reply to Written Opinion prepared by the EPO
Search/Exam
Nov 14, 2012
(Electronic) Receipt
Search/Exam
Nov 14, 2012
Request for entry into the European phase
Search/Exam
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Sep 11, 2012
Aug 25, 2012
Aug 25, 2012
Aug 23, 2012
Aug 23, 2012
Jul 24, 2012
Written opinion
PCT2
Jul 24, 2012
Jul 24, 2012
Apr 24, 2012
Notification of election of EPO
Search/Exam
Mar 29, 2012
Mar 29, 2012
Mar 23, 2012
Mar 21, 2012
PCT demand form
PCT2
Mar 21, 2012
Mar 21, 2012
Mar 20, 2012
Mar 20, 2012
PCT demand form
PCT2
Mar 20, 2012
Mar 20, 2012
Mar 1, 2012
Copy of the international search report
Search/Exam
Mar 1, 2012
Copy of the international search report
Search/Exam
Mar 1, 2012
Published international application - A1
Search/Exam
Jan 23, 2012
Jan 23, 2012
Jan 23, 2012
Nov 11, 2011
Abstract
PCTISA
Nov 11, 2011
Claims
PCTISA
Nov 11, 2011
Description
PCTISA
Nov 11, 2011
Drawings
PCTISA