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The patent EP2905584 was granted to Blueair on Aug 26, 2020. The application was originally filed on Feb 7, 2014 under application number EP14154379A. 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 |
|---|---|
| OPPOSITION | CN1627763 |
| OPPOSITION | GB2224863 |
| OPPOSITION | JP2007275836 |
| OPPOSITION | KR20060020355 |
| OPPOSITION | KR20120063881 |
| OPPOSITION | US2005207950 |
| OPPOSITION | US2007012191 |
| OPPOSITION | US2007012192 |
| OPPOSITION | US2007023045 |
| OPPOSITION | US2010101264 |
| OPPOSITION | US3950155 |
| OPPOSITION | US4347443 |
| OPPOSITION | US4790862 |
| OPPOSITION | WO2009007727 |
| SEARCH | EP1637811 |
| SEARCH | JPH04284811 |
| SEARCH | JPH10249129 |
| SEARCH | KR20120063881 |
| SEARCH | US4790862 |
| SEARCH | US6267010 |
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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Jul 30, 2020
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Means of redress
OPPO
Dec 3, 2019
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Authorisation
OPPO
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Jun 22, 2017
May 26, 2017
Decision to grant a European patent
Search/Exam
May 15, 2017
(Electronic) Receipt
Search/Exam
May 15, 2017
French translation of claims
Search/Exam
May 15, 2017
German translation of the claims
Search/Exam
May 15, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 18, 2017
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Intention to grant (signatures)
Search/Exam
Jan 18, 2017
Text intended for grant (clean copy)
Search/Exam
Jan 18, 2017
Dec 14, 2016
Examination started
Search/Exam
Feb 12, 2016
Feb 12, 2016
Amended claims with annotations
Search/Exam
Feb 12, 2016
Amendments received before examination
Search/Exam
Feb 12, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 4, 2015
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Notification of forthcoming publication
Search/Exam
Sep 19, 2014
Sep 19, 2014
European search opinion
Search/Exam
Sep 19, 2014
European search report
Search/Exam
Aug 13, 2014
Letter accompanying subsequently filed items
Search/Exam
Aug 13, 2014
Letter concerning search matters
Search/Exam
Jul 21, 2014
Jul 21, 2014
Partial European search report
Search/Exam
Jun 30, 2014
Search started
Search/Exam
Apr 2, 2014
Communication to designated inventor
Search/Exam
Feb 7, 2014
Abstract
Search/Exam
Feb 7, 2014
Feb 7, 2014
Claims
Search/Exam
Feb 7, 2014
Description
Search/Exam
Feb 7, 2014
Designation of inventor
Search/Exam
Feb 7, 2014
Drawings
Search/Exam
Feb 7, 2014
Request for grant of a European patent
Search/Exam