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The patent EP2845638 was granted to Kaeser Kompressoren on Jul 3, 2024. The application was filed on Sep 9, 2013 under application number EP13183511A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| ATLAS COPCO | May 22, 2019 | VO | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2332631 |
| OPPOSITION | EP1973631 |
| OPPOSITION | EP2464441 |
| OPPOSITION | US2011132191 |
| OPPOSITION | US2013025450 |
| OPPOSITION | US5915816 |
| OPPOSITION | US6960236 |
| OPPOSITION | US7326277 |
| OPPOSITION | US7569095 |
| OPPOSITION | US8328904 |
| OPPOSITION | WO0247797 |
| OPPOSITION | WO2012078542 |
| SEARCH | CH691349 |
| SEARCH | EP0566180 |
| SEARCH | EP2332631 |
| SEARCH | WO0074819 |
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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Reply to appeal
Appeal
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Reply to appeal
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Non-scannable object
Appeal
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Non-scannable object
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Claims
Appeal
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Appeal
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Notice of appeal
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Authorisation
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Decision to grant a European patent
Search/Exam
Jul 12, 2018
(Electronic) Receipt
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Jul 12, 2018
English translation of the claims
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Jul 12, 2018
Filing of the translations of the claims
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Jul 12, 2018
French translation of claims
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May 9, 2018
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Intention to grant (signatures)
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May 9, 2018
Text intended for grant (clean copy)
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May 9, 2018
Mar 29, 2018
Examination started
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Oct 2, 2017
Sep 15, 2017
(Electronic) Receipt
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Sep 15, 2017
Enquiry as to the processing of the file
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Sep 15, 2017
Letter accompanying subsequently filed items
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Submission concerning representation
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Submission concerning representation
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Mar 16, 2015
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Notification of forthcoming publication
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Sep 4, 2014
(Electronic) Receipt
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Amended claims with annotations
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Sep 4, 2014
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Sep 4, 2014
Letter accompanying subsequently filed items
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Annexes in respect of a client data request
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Annexes in respect of a client data request
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Letter accompanying subsequently filed items
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European search opinion
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European search report
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Dec 16, 2013
(Electronic) Receipt
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Dec 16, 2013
Letter accompanying subsequently filed items
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Dec 16, 2013
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Communication to designated inventor
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Oct 23, 2013
Oct 16, 2013
Search started
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Sep 9, 2013
Abstract
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Sep 9, 2013
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Claims
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Sep 9, 2013
Description
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Sep 9, 2013
Designation of inventor
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Sep 9, 2013
Drawings
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Sep 9, 2013
Request for grant of a European patent
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