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The patent EP2046483 was granted to Praxair Technology on Aug 22, 2018. The application was filed on Jul 3, 2007 under application number EP07810198A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| LAIR LIQUIDE | Apr 30, 2019 | AIR LIQUIDE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2007227352 |
| INTERNATIONAL-SEARCH-REPORT | US2007227353 |
| INTERNATIONAL-SEARCH-REPORT | US4684377 |
| INTERNATIONAL-SEARCH-REPORT | US4857083 |
| INTERNATIONAL-SEARCH-REPORT | US4915711 |
| INTERNATIONAL-SEARCH-REPORT | US5656067 |
| INTERNATIONAL-SEARCH-REPORT | US5656068 |
| INTERNATIONAL-SEARCH-REPORT | US5997612 |
| INTERNATIONAL-SEARCH-REPORT | WO2007053494 |
| INTERNATIONAL-SEARCH-REPORT | WO2007123673 |
| OPPOSITION | EP0248922 |
| OPPOSITION | EP0791388 |
| OPPOSITION | FR2672818 |
| OPPOSITION | US5656068 |
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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Authorisation
OPPO
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Authorisation
OPPO
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Sep 3, 2018
Jul 26, 2018
Decision to grant a European patent
Search/Exam
Jul 11, 2018
(Electronic) Receipt
Search/Exam
Jul 11, 2018
French translation of claims
Search/Exam
Jul 11, 2018
German translation of the claims
Search/Exam
Jul 11, 2018
Letter accompanying subsequently filed items
Search/Exam
Jun 5, 2018
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May 10, 2018
(Electronic) Receipt
Search/Exam
May 10, 2018
Letter accompanying subsequently filed items
Search/Exam
May 10, 2018
Mar 6, 2018
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Intention to grant (signatures)
Search/Exam
Mar 6, 2018
Text intended for grant (clean copy)
Search/Exam
Mar 6, 2018
Jan 27, 2017
(Electronic) Receipt
Search/Exam
Jan 27, 2017
Amended claims with annotations
Search/Exam
Jan 27, 2017
Amended description with annotations
Search/Exam
Jan 27, 2017
Claims
Search/Exam
Jan 27, 2017
Description
Search/Exam
Jan 27, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 27, 2017
Sep 20, 2016
Annex to the communication
Search/Exam
Sep 20, 2016
Communication from the Examining Division
Search/Exam
Sep 2, 2016
Examination started
Search/Exam
Nov 12, 2015
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Submission concerning representation
Search/Exam
Apr 18, 2012
Jun 26, 2009
Final instructions (loss of partial rights)
Search/Exam
Mar 18, 2009
Mar 17, 2009
Feb 25, 2009
Feb 2, 2009
(Electronic) Receipt
Search/Exam
Feb 2, 2009
Feb 2, 2009
Request for entry into the European phase
Search/Exam
Jan 20, 2009
Nov 13, 2008
Information on entry into European phase
Search/Exam
Feb 29, 2008
Feb 6, 2008
Jan 10, 2008
Copy of the international search report
Search/Exam