The patent EP3678634 was granted to Evonik Operations on Oct 4, 2023. The application was originally filed on Aug 14, 2018 under application number EP18752494A. 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 | 
|---|---|
| DESCRIPTION | DE10327871 | 
| DESCRIPTION | DE19755488 | 
| DESCRIPTION | EP1715833 | 
| DESCRIPTION | EP2273966 | 
| DESCRIPTION | FR6935E | 
| DESCRIPTION | WO2008155073 | 
| DESCRIPTION | WO2008155075 | 
| INTERNATIONAL-SEARCH-REPORT | DE102011078382 | 
| INTERNATIONAL-SEARCH-REPORT | EP2363387 | 
| INTERNATIONAL-SEARCH-REPORT | US2013012423 | 
| INTERNATIONAL-SEARCH-REPORT | US2015297485 | 
| OPPOSITION | DE10054020 | 
| OPPOSITION | DE102015223028 | 
| OPPOSITION | DE19710155 | 
| OPPOSITION | US2002010104 | 
| OPPOSITION | WO0021502 | 
| OPPOSITION | WO2012130413 | 
| OPPOSITION | WO9531957 | 
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | 
|---|---|
| OPPOSITION | - Anonymous, "DEHYQUART® AU-46 - Labeling Information", carechemicals, (20040126), XP093239162 | 
| OPPOSITION | - Anonymous, "VARISOFT® EQ 100 - Technical Information ", VARISOFT, (20200901), VARISOFT, URL: https://glenncorp.com/wp-content/uploads/2020/09/VARISOFT_EQ_100_TI_C0920.pdf, XP093239163 | 
| OPPOSITION | - Cosima Stubenrauch, "Index", Cosima Stubenrauch, Cosima Stubenrauch, Microemulsions - Background, New Concepts, Applications, Perspectives, Wiley, (20090101), page whole book, ISBN 978-1-4051-6782-6, XP009558975 | 
| OPPOSITION | - Matthias Hloucha, "XIII Mikroemulsionen und PIT-Emulsionen", Matthias Hloucha, Karbstein, Prof. Dr. Heike et al, Emulgiertechnik : Grundlagen, Verfahren und Anwendungen; 3. Auflage, Hamburg, DE, Behr's Verlag, (20120101), pages 291 - 314, ISBN 978-3-89947-869-3, XP009560638 | 
| OPPOSITION | - Najjar Reza, "Microemulsions - A Brief Introduction", Microemulsions - An Introduction to Properties and Applications, InTech, (20120316), doi:10.5772/36057, XP093239165 | 
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Date
Description
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Oct 17, 2023
Sep 7, 2023
Decision to grant a European patent
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Jul 5, 2023
(Electronic) Receipt
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Jul 5, 2023
English translation of the claims
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Jul 5, 2023
Filing of the translations of the claims
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Jul 5, 2023
French translation of claims
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Jul 5, 2023
Letter accompanying subsequently filed items
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Mar 30, 2023
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Intention to grant (signatures)
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Mar 30, 2023
Text intended for grant (clean copy)
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Mar 30, 2023
Dec 16, 2021
(Electronic) Receipt
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Dec 16, 2021
Amended claims with annotations
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Dec 16, 2021
Claims
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Dec 16, 2021
Description
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Dec 16, 2021
Letter accompanying subsequently filed items
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Dec 16, 2021
Nov 4, 2021
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(Electronic) Receipt
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Oct 28, 2021
Letter accompanying subsequently filed items
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Oct 28, 2021
Jul 1, 2021
Annex to the communication
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Jul 1, 2021
Communication from the Examining Division
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Jun 16, 2021
Examination started
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Oct 14, 2020
(Electronic) Receipt
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Oct 14, 2020
Oct 14, 2020
Amended claims with annotations
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Oct 14, 2020
Amendments received before examination
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Oct 14, 2020
Letter accompanying subsequently filed items
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Jun 24, 2020
Communication to designated inventor
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Jun 17, 2020
(Electronic) Receipt
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Jun 17, 2020
Letter accompanying subsequently filed items
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Jun 17, 2020
Letter concerning the inventor
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Jun 17, 2020
May 26, 2020
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Letter which had not been notified
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Apr 14, 2020
Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Apr 14, 2020
Communication to designated inventor
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Apr 7, 2020
Priority search results copy provided by EPO
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Mar 26, 2020
Mar 10, 2020
Information regarding early processing
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Feb 17, 2020
(Electronic) Receipt
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Feb 17, 2020
Request for entry into the European phase
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Jan 17, 2020
Information on entry into European phase
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Notification of the recording of a change
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Notification of the recording of a change
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Notification of the recording of a change
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Nov 6, 2019
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Copy of the international search report
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Mar 14, 2019
Copy of the international search report
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Mar 14, 2019
Published international application - A1
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Sep 24, 2018
ISR: cited documents
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(Electronic) Receipt
PCTRO
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Abstract
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Aug 14, 2018
Claims
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Description
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Drawings
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