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The patent EP2198167 was granted to Praxair Technology on Apr 20, 2022. The application was filed on Aug 25, 2008 under application number EP08798620A. 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 |
|---|---|---|---|
| SIEMENS | Jan 12, 2018 | PATERIS PATENTANWALTE PARTMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2007036647 |
| INTERNATIONAL-SEARCH-REPORT | US2372880 |
| INTERNATIONAL-SEARCH-REPORT | US5529457 |
| OPPOSITION | DE19502808 |
| OPPOSITION | US2007036647 |
| OPPOSITION | US2372880 |
| OPPOSITION | US4850795 |
| OPPOSITION | US4902200 |
| OPPOSITION | US5529457 |
| OPPOSITION | US6386830 |
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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Means of redress
OPPO
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Authorisation
OPPO
Mar 31, 2021
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Apr 12, 2017
Mar 16, 2017
Decision to grant a European patent
Search/Exam
Mar 6, 2017
(Electronic) Receipt
Search/Exam
Mar 6, 2017
French translation of claims
Search/Exam
Mar 6, 2017
German translation of the claims
Search/Exam
Mar 6, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 27, 2016
Oct 27, 2016
Oct 27, 2016
Intention to grant (signatures)
Search/Exam
Oct 27, 2016
Text intended for grant (clean copy)
Search/Exam
Oct 27, 2016
Oct 10, 2016
Examination started
Search/Exam
Nov 12, 2015
Nov 9, 2015
Nov 9, 2015
May 13, 2014
Submission concerning representation
Search/Exam
Mar 28, 2014
Apr 18, 2012
Sep 21, 2011
Letter concerning the inventor
Search/Exam
Sep 19, 2011
Letter concerning the inventor
Search/Exam
Jun 30, 2011
Jun 17, 2011
Letter concerning the inventor
Search/Exam
May 27, 2010
May 4, 2010
Apr 13, 2010
Mar 26, 2010
(Electronic) Receipt
Search/Exam
Mar 26, 2010
Request for entry into the European phase
Search/Exam
Feb 5, 2010
Information on entry into European phase
Search/Exam
Apr 23, 2009
Apr 2, 2009
Copy of the international search report
Search/Exam
Apr 2, 2009
Published international application - A1
Search/Exam
Dec 30, 2008
Dec 30, 2008
Dec 30, 2008
Sep 4, 2008
Abstract
PCTISA
Sep 4, 2008
Claims
PCTISA
Sep 4, 2008
Description
PCTISA
Sep 4, 2008
Drawings
PCTISA