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The patent EP2759733 was granted to Carl Freudenberg on May 9, 2018. The application was filed on May 29, 2013 under application number EP13002799A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| CARBON AIR | Feb 7, 2019 | BINGHAM | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2012052776 |
| OPPOSITION | EP1064996 |
| OPPOSITION | GB1552446 |
| OPPOSITION | US2006011064 |
| OPPOSITION | US2007056954 |
| OPPOSITION | US2009188392 |
| OPPOSITION | US2011139129 |
| OPPOSITION | US2011167530 |
| OPPOSITION | US2014037119 |
| OPPOSITION | US4000236 |
| OPPOSITION | US4477062 |
| OPPOSITION | US7112272 |
| OPPOSITION | WO0225190 |
| OPPOSITION | WO2005054742 |
| OPPOSITION | WO2012052776 |
| OPPOSITION | WO2012140895 |
| OPPOSITION | WO2013068763 |
| OPPOSITION | WO9007970 |
| SEARCH | DE2344263 |
| SEARCH | US2004100005 |
| SEARCH | WO2012052776 |
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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Jan 27, 2020
Jan 22, 2020
Nov 19, 2019
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Claims
OPPO
Jul 4, 2019
Claims
OPPO
Jul 4, 2019
Claims
OPPO
Jul 4, 2019
Claims
OPPO
Jul 4, 2019
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May 22, 2018
Apr 12, 2018
Decision to grant a European patent
Search/Exam
Mar 26, 2018
(Electronic) Receipt
Search/Exam
Mar 26, 2018
English translation of the claims
Search/Exam
Mar 26, 2018
Filing of the translations of the claims
Search/Exam
Mar 26, 2018
French translation of claims
Search/Exam
Mar 26, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 27, 2018
Feb 27, 2018
Feb 27, 2018
Intention to grant (signatures)
Search/Exam
Feb 27, 2018
Text intended for grant (clean copy)
Search/Exam
Feb 27, 2018
Jan 28, 2018
Jan 17, 2018
(Electronic) Receipt
Search/Exam
Jan 17, 2018
Amended claims with annotations
Search/Exam
Jan 17, 2018
Claims
Search/Exam
Jan 17, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 17, 2018
Jan 2, 2018
Jan 2, 2018
Jan 2, 2018
Intention to grant (signatures)
Search/Exam
Jan 2, 2018
Text intended for grant (clean copy)
Search/Exam
Jan 2, 2018
Feb 24, 2017
Feb 6, 2017
Jan 27, 2017
Aug 26, 2016
(Electronic) Receipt
Search/Exam
Aug 26, 2016
Amended claims with annotations
Search/Exam
Aug 26, 2016
Amended description with annotations
Search/Exam
Aug 26, 2016
Claims
Search/Exam
Aug 26, 2016
Description
Search/Exam
Aug 26, 2016
Letter accompanying subsequently filed items
Search/Exam
Aug 26, 2016
Apr 20, 2016
Annex to the communication
Search/Exam
Apr 20, 2016
Communication from the Examining Division
Search/Exam
Jan 30, 2015
(Electronic) Receipt
Search/Exam
Jan 30, 2015
Jan 30, 2015
Amended claims with annotations
Search/Exam
Jan 30, 2015
Jan 30, 2015
Amended description with annotations
Search/Exam
Jan 30, 2015
Amendments received before examination
Search/Exam
Jan 30, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2014
Aug 20, 2014
Aug 4, 2014
Jul 2, 2014
Notification of forthcoming publication
Search/Exam
Mar 31, 2014
Mar 31, 2014
European search opinion
Search/Exam
Mar 31, 2014
European search report
Search/Exam
Feb 19, 2014
Search started
Search/Exam
Feb 11, 2014
Feb 11, 2014
Jan 22, 2014
Payment of fees and costs
Search/Exam
Dec 18, 2013
Nov 27, 2013
Nov 21, 2013
Jul 22, 2013
Communication to designated inventor
Search/Exam
Jul 22, 2013
Communication to designated inventor
Search/Exam
Jul 22, 2013
Communication to designated inventor
Search/Exam
Jul 22, 2013
Communication to designated inventor
Search/Exam
Jul 10, 2013
Letter concerning the priority
Search/Exam
Jul 10, 2013
Priority document
Search/Exam
May 29, 2013
Abstract
Search/Exam
May 29, 2013
Claims
Search/Exam
May 29, 2013
Description
Search/Exam
May 29, 2013
Designation of inventor
Search/Exam
May 29, 2013
Drawings
Search/Exam
May 29, 2013
Payment of fees and costs
Search/Exam
May 29, 2013
Request for grant of a European patent
Search/Exam