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The patent EP3829749 was granted to Saudi Arabian OIL on May 15, 2024. The application was filed on Jul 19, 2019 under application number EP19749110A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| LINDE | Feb 16, 2025 | GRUNDNER | ADMISSIBLE |
| LINDE | Feb 16, 2025 | IMHOF | ADMISSIBLE |
| LAIR LIQUIDE | Feb 10, 2025 | 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 | EP2263778 |
| INTERNATIONAL-SEARCH-REPORT | US10005018 |
| INTERNATIONAL-SEARCH-REPORT | US2017232384 |
| INTERNATIONAL-SEARCH-REPORT | WO0053978 |
| OPPOSITION | CN101929791 |
| OPPOSITION | DE102005023434 |
| OPPOSITION | EP1389672 |
| OPPOSITION | EP2489968 |
| OPPOSITION | FR2710370 |
| OPPOSITION | FR2844344 |
| OPPOSITION | FR2946099 |
| OPPOSITION | JP2002347507 |
| OPPOSITION | JPH03164677 |
| OPPOSITION | JPH10267526 |
| OPPOSITION | JPH10267527 |
| OPPOSITION | JPH10267528 |
| OPPOSITION | US2004074850 |
| OPPOSITION | US2009100863 |
| OPPOSITION | US2012125044 |
| OPPOSITION | US2018010848 |
| OPPOSITION | US2021278132 |
| OPPOSITION | US5406786 |
| OPPOSITION | US5758515 |
| OPPOSITION | US5921106 |
| OTHER | US6945076 |
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.
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Decision to grant a European patent
Search/Exam
Apr 9, 2024
(Electronic) Receipt
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Apr 9, 2024
Filing of the translations of the claims
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Apr 9, 2024
French translation of claims
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Apr 9, 2024
German translation of the claims
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Apr 9, 2024
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
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Oct 9, 2023
Amended claims with annotations
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Oct 9, 2023
Claims
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Oct 9, 2023
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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Sep 6, 2021
(Electronic) Receipt
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Sep 6, 2021
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Amended claims with annotations
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Sep 6, 2021
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Amended description with annotations
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Sep 6, 2021
Amendments received before examination
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Sep 6, 2021
Letter accompanying subsequently filed items
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Jul 9, 2021
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Observations by third parties
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Communication to designated inventor
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Feb 15, 2021
Jan 27, 2021
(Electronic) Receipt
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Jan 27, 2021
Request for entry into the European phase
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Dec 10, 2020
Information on entry into European phase
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Feb 21, 2020
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Copy of the international search report
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Jan 30, 2020
Published international application - A1
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Nov 5, 2019
Annex to a communication
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Nov 5, 2019
ISR: cited documents
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Abstract
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Annex
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Claims
PCTISA
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Description
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