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The patent EP3193621 was granted to Basf on Dec 21, 2022. The application was filed on Aug 6, 2015 under application number EP15750679A. 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 |
|---|---|---|---|
| SASOL GERMANY | Aug 21, 2019 | HOFFMANN EITLE | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0394847 |
| INTERNATIONAL-SEARCH-REPORT | WO03090531 |
| INTERNATIONAL-SEARCH-REPORT | WO2008132150 |
| INTERNATIONAL-SEARCH-REPORT | WO2009013247 |
| INTERNATIONAL-SEARCH-REPORT | WO2009130281 |
| INTERNATIONAL-SEARCH-REPORT | WO9518531 |
| OPPOSITION | EP1023832 |
| OPPOSITION | EP2615919 |
| OPPOSITION | US2008064756 |
| OPPOSITION | US4115457 |
| OPPOSITION | WO03090531 |
| OPPOSITION | WO9903345 |
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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Nov 24, 2022
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Means of redress
OPPO
May 27, 2022
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Description
OPPO
Sep 15, 2021
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Description
OPPO
Mar 15, 2021
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Claims
OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
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OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
Claims
OPPO
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Claims
OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
Claims
OPPO
Mar 9, 2020
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OPPO
Mar 9, 2020
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Dec 3, 2018
Oct 25, 2018
Decision to grant a European patent
Search/Exam
Oct 5, 2018
(Electronic) Receipt
Search/Exam
Oct 5, 2018
Filing of the translations of the claims
Search/Exam
Oct 5, 2018
French translation of claims
Search/Exam
Oct 5, 2018
German translation of the claims
Search/Exam
Jul 10, 2018
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Intention to grant (signatures)
Search/Exam
Jul 10, 2018
Text intended for grant (clean copy)
Search/Exam
Jul 10, 2018
Jun 20, 2018
Examination started
Search/Exam
Oct 25, 2017
(Electronic) Receipt
Search/Exam
Oct 25, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 25, 2017
Reply to Written Opinion prepared by the EPO
Search/Exam
Jun 28, 2017
May 2, 2017
Apr 26, 2017
Communication to designated inventor
Search/Exam
Apr 26, 2017
Communication to designated inventor
Search/Exam
Apr 26, 2017
Communication to designated inventor
Search/Exam
Apr 26, 2017
Communication to designated inventor
Search/Exam
Apr 21, 2017
Priority search results copy provided by EPO
Search/Exam
Mar 23, 2017
Feb 15, 2017
Feb 15, 2017
Submission concerning representation
Search/Exam
Jan 30, 2017
(Electronic) Receipt
Search/Exam
Jan 30, 2017
Request for entry into the European phase
Search/Exam
Jan 27, 2017
Information on entry into European phase
Search/Exam
Aug 22, 2016
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Notification of election of EPO
Search/Exam
Jul 19, 2016
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Annex
PCT2
Jun 29, 2016
PCT demand form
PCT2
Jun 29, 2016
Jun 29, 2016
Apr 12, 2016
Mar 24, 2016
Copy of the international search report
Search/Exam
Mar 24, 2016
Published international application - A1
Search/Exam
Sep 28, 2015
Sep 28, 2015
Sep 28, 2015
Aug 28, 2015
Aug 6, 2015
(Electronic) Receipt
PCTRO
Aug 6, 2015
Abstract
PCTRO
Aug 6, 2015
Claims
PCTRO
Aug 6, 2015
Description
PCTRO
Aug 6, 2015
Aug 6, 2015
Aug 6, 2015