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The patent EP3707303 was granted to CHT Germany on Dec 8, 2021. The application was filed on Oct 30, 2018 under application number EP18796420A. 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 |
|---|---|---|---|
| CARBOCON | Sep 8, 2022 | GOTTFRIED | WITHDRAWN |
| LEFATEX CHEMIE | Sep 8, 2022 | GODEMEYER BLUM LENZE PATENTANWALTE PARTNERSCHAFT MBB WERKPATENT | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102005048190 |
| DESCRIPTION | DE102008040919 |
| DESCRIPTION | EP0227207 |
| DESCRIPTION | EP2004712 |
| DESCRIPTION | EP2530217 |
| DESCRIPTION | EP2666922 |
| DESCRIPTION | EP2894272 |
| DESCRIPTION | US4910076 |
| DESCRIPTION | US6632309 |
| DESCRIPTION | WO2004007161 |
| DESCRIPTION | WO2014106685 |
| INTERNATIONAL-SEARCH-REPORT | DE102005048190 |
| INTERNATIONAL-SEARCH-REPORT | EP0987363 |
| INTERNATIONAL-SEARCH-REPORT | WO2017156206 |
| OPPOSITION | DE102005048190 |
| OPPOSITION | DE102011005638 |
| OPPOSITION | DE3438388 |
| OPPOSITION | EP0178612 |
| OPPOSITION | EP0987363 |
| OPPOSITION | JP2007131966 |
| OPPOSITION | JP2013043816 |
| OPPOSITION | JPH02112454 |
| OPPOSITION | US2001023568 |
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 21, 2021
Nov 11, 2021
Decision to grant a European patent
Search/Exam
Oct 5, 2021
(Electronic) Receipt
Search/Exam
Oct 5, 2021
English translation of the claims
Search/Exam
Oct 5, 2021
Filing of the translations of the claims
Search/Exam
Oct 5, 2021
French translation of claims
Search/Exam
Oct 5, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 2, 2021
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Jun 2, 2021
Intention to grant (signatures)
Search/Exam
Jun 2, 2021
Text intended for grant (clean copy)
Search/Exam
Jun 2, 2021
Mar 29, 2021
Examination started
Search/Exam
Mar 2, 2021
(Electronic) Receipt
Search/Exam
Mar 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 2, 2021
Priority search results
Search/Exam
Mar 2, 2021
Feb 17, 2021
Nov 4, 2020
Communication to designated inventor
Search/Exam
Oct 29, 2020
(Electronic) Receipt
Search/Exam
Oct 29, 2020
Oct 29, 2020
Amended description with annotations
Search/Exam
Oct 29, 2020
Amendments received before examination
Search/Exam
Oct 29, 2020
Letter accompanying subsequently filed items
Search/Exam
Aug 19, 2020
Jul 23, 2020
Jul 10, 2020
Letter which had not been notified
Search/Exam
Jun 18, 2020
Jun 16, 2020
Communication to designated inventor
Search/Exam
Jun 16, 2020
Communication to designated inventor
Search/Exam
Jun 16, 2020
Communication to designated inventor
Search/Exam
Jun 16, 2020
Communication to designated inventor
Search/Exam
May 20, 2020
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May 4, 2020
Information regarding early processing
Search/Exam
Apr 8, 2020
(Electronic) Receipt
Search/Exam
Apr 8, 2020
Request for entry into the European phase
Search/Exam
Mar 20, 2020
Information on entry into European phase
Search/Exam
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Oct 24, 2019
Written opinion
PCT2
Oct 24, 2019
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Oct 2, 2019
Notification of election of EPO
Search/Exam
Sep 17, 2019
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PCT demand form
PCT2
Sep 3, 2019
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Copy of the international search report
Search/Exam
May 16, 2019
Copy of the international search report
Search/Exam
May 16, 2019
Published international application - A1
Search/Exam
Jan 7, 2019
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Oct 30, 2018
(Electronic) Receipt
PCTRO
Oct 30, 2018
Abstract
PCTRO
Oct 30, 2018
Claims
PCTRO
Oct 30, 2018
Description
PCTRO
Oct 30, 2018
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Drawings
PCTRO
Oct 30, 2018