The patent EP3990391 was granted to Basf on Aug 9, 2023. The application was originally filed on Jun 17, 2020 under application number EP20732923A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | KR20160045029 |
| INTERNATIONAL-SEARCH-REPORT | US2009081548 |
| INTERNATIONAL-SEARCH-REPORT | US2013171523 |
| OPPOSITION | CN107732179 |
| OPPOSITION | CN107742717 |
| OPPOSITION | CN108767239 |
| OPPOSITION | EP3439084 |
| OPPOSITION | US2003047717 |
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
Get a free citation report including examiner, opposition, and international search citations.
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Date
Description
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OPPO
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OPPO
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OPPO
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Aug 22, 2023
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Decision to grant a European patent
Search/Exam
Jun 2, 2023
(Electronic) Receipt
Search/Exam
Jun 2, 2023
Filing of the translations of the claims
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Jun 2, 2023
French translation of claims
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Jun 2, 2023
German translation of the claims
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Feb 28, 2023
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Intention to grant (signatures)
Search/Exam
Feb 28, 2023
Text intended for grant (clean copy)
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Feb 28, 2023
Nov 23, 2022
Examination started
Search/Exam
Apr 6, 2022
Mar 4, 2022
(Electronic) Receipt
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Mar 4, 2022
Letter accompanying subsequently filed items
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Mar 4, 2022
Matter concerning the application
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Feb 25, 2022
Feb 20, 2022
Priority search results copy provided by EPO
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Jan 4, 2022
Dec 13, 2021
Information regarding early processing
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Nov 23, 2021
(Electronic) Receipt
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Nov 23, 2021
Request for entry into the European phase
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Nov 5, 2021
Information on entry into European phase
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Jun 15, 2021
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Dec 30, 2020
Copy of the international search report
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Dec 30, 2020
Notification of election of EPO
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Dec 30, 2020
Published international application - A1
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Dec 3, 2020
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ISR: cited documents
PCTISA
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PCT demand form
PCT2
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(Electronic) Receipt
PCTRO
Jun 17, 2020
Abstract
PCTRO
Jun 17, 2020
Claims
PCTRO
Jun 17, 2020
Description
PCTRO
Jun 17, 2020
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Drawings
PCTRO
Jun 17, 2020