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The patent EP4054979 was granted to Casale on Nov 29, 2023. The application was filed on Oct 12, 2020 under application number EP20789597A. 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 |
|---|---|---|---|
| STAMICARBON | Aug 29, 2024 | VO | ADMISSIBLE |
| THYSSENKRUPP UHDE | Aug 28, 2024 | KUTZENBERGER WOLFF & PARTNER | ADMISSIBLE |
| TOPSOE | Aug 28, 2024 | INSPICOS PS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE102017222948 |
| INTERNATIONAL-SEARCH-REPORT | US2013108538 |
| INTERNATIONAL-SEARCH-REPORT | US4215099 |
| OPPOSITION | EP0049967 |
| OPPOSITION | US2013108538 |
| OPPOSITION | US2017122129 |
| OPPOSITION | US7594386 |
| OPPOSITION | WO2017153304 |
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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Dec 12, 2023
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Decision to grant a European patent
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Oct 16, 2023
(Electronic) Receipt
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Oct 16, 2023
Filing of the translations of the claims
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Oct 16, 2023
French translation of claims
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Oct 16, 2023
German translation of the claims
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Oct 16, 2023
Letter accompanying subsequently filed items
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Aug 8, 2023
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Intention to grant (signatures)
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Aug 8, 2023
Text intended for grant (clean copy)
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Aug 8, 2023
Jun 16, 2023
Examination started
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Apr 5, 2023
Mar 29, 2023
Non-patent literature filed by a third party
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Mar 29, 2023
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Mar 29, 2023
Observations by third parties
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Mar 29, 2023
Patent document filed by a Third party
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Mar 29, 2023
Patent document filed by a Third party
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Mar 29, 2023
Patent document filed by a Third party
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Mar 29, 2023
Patent document filed by a Third party
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Aug 18, 2022
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Priority search results copy provided by EPO
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May 23, 2022
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(Electronic) Receipt
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Mar 23, 2022
Request for entry into the European phase
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Mar 18, 2022
Information on entry into European phase
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May 31, 2021
May 14, 2021
Copy of the international search report
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May 14, 2021
Published international application - A1
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Oct 23, 2020
Oct 12, 2020
(Electronic) Receipt
PCTRO
Oct 12, 2020
Abstract
PCTRO
Oct 12, 2020
Claims
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Oct 12, 2020
Description
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Oct 12, 2020
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Drawings
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Oct 12, 2020