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The patent EP2971768 was granted to Kaeser Kompressoren on Apr 5, 2023. The application was filed on Mar 14, 2014 under application number EP14710264A. 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 | Sep 25, 2020 | VO | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE102005006410 |
| INTERNATIONAL-SEARCH-REPORT | DE102008064491 |
| INTERNATIONAL-SEARCH-REPORT | DE102011079732 |
| INTERNATIONAL-SEARCH-REPORT | DE10308725 |
| INTERNATIONAL-SEARCH-REPORT | DE19826169 |
| INTERNATIONAL-SEARCH-REPORT | EP1672454 |
| INTERNATIONAL-SEARCH-REPORT | US2003097243 |
| OPPOSITION | CA2842914 |
| OPPOSITION | US2003097243 |
| OPPOSITION | US2006015315 |
| OPPOSITION | US2007005805 |
| OPPOSITION | US2009292514 |
| OPPOSITION | US2012029706 |
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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Mar 10, 2023
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Sep 7, 2022
Refund of fees
Appeal
Sep 5, 2022
Sep 5, 2022
Aug 31, 2022
Aug 18, 2022
(Electronic) Receipt
Appeal
Aug 18, 2022
Aug 18, 2022
Withdrawal of an appeal
Appeal
Jun 23, 2022
Jun 23, 2022
Jun 17, 2022
(Electronic) Receipt
Appeal
Jun 17, 2022
Jun 17, 2022
Notice of appeal
Appeal
Apr 8, 2022
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Means of redress
OPPO
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Decision to grant a European patent
Search/Exam
Nov 18, 2019
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Intention to grant (signatures)
Search/Exam
Nov 18, 2019
Text intended for grant (clean copy)
Search/Exam
Nov 18, 2019
Oct 25, 2019
(Electronic) Receipt
Search/Exam
Oct 25, 2019
English translation of the claims
Search/Exam
Oct 25, 2019
French translation of claims
Search/Exam
Oct 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2019
Jun 17, 2019
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Jun 17, 2019
Intention to grant (signatures)
Search/Exam
Jun 17, 2019
Text intended for grant (clean copy)
Search/Exam
Jun 17, 2019
Apr 5, 2019
(Electronic) Receipt
Search/Exam
Apr 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 5, 2019
Feb 4, 2019
Jan 30, 2019
(Electronic) Receipt
Search/Exam
Jan 30, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 30, 2019
Sep 28, 2018
Annex to the communication
Search/Exam
Sep 28, 2018
Communication from the Examining Division
Search/Exam
Sep 20, 2018
Examination started
Search/Exam
Jun 10, 2016
Submission concerning representation
Search/Exam
Jun 10, 2016
Submission concerning representation
Search/Exam
Apr 29, 2016
(Electronic) Receipt
Search/Exam
Apr 29, 2016
Apr 29, 2016
Amended description with annotations
Search/Exam
Apr 29, 2016
Amendments received before examination
Search/Exam
Apr 29, 2016
Letter accompanying subsequently filed items
Search/Exam
Jan 18, 2016
Dec 23, 2015
Oct 22, 2015
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 15, 2015
Priority search results copy provided by EPO
Search/Exam
Oct 5, 2015
(Electronic) Receipt
Search/Exam
Oct 5, 2015
Letter accompanying subsequently filed items
Search/Exam
Oct 5, 2015
Matter concerning the application
Search/Exam
Oct 2, 2015
(Electronic) Receipt
Search/Exam
Oct 2, 2015
Request for entry into the European phase
Search/Exam
Oct 1, 2015
Jul 22, 2015
Information on entry into European phase
Search/Exam
Feb 16, 2015
Oct 8, 2014
Sep 18, 2014
Copy of the international search report
Search/Exam
Sep 18, 2014
Copy of the international search report
Search/Exam
Sep 18, 2014
Published international application - A1
Search/Exam
Apr 17, 2014
Apr 17, 2014
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Mar 14, 2014
(Electronic) Receipt
PCTRO
Mar 14, 2014
Abstract
PCTRO
Mar 14, 2014
Claims
PCTRO
Mar 14, 2014
Description
PCTRO
Mar 14, 2014
Drawings
PCTRO
Mar 14, 2014
Mar 14, 2014