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The patent EP3818090 was granted to DDP Specialty Electronic Materials on Feb 28, 2024. The application was filed on Jun 14, 2019 under application number EP19740104A. 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 |
|---|---|---|---|
| SIKA TECHNOLOGY | Nov 26, 2024 | SIKA PATENT ATTORNEYS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US4910279 |
| EXAMINATION | WO2019245755 |
| INTERNATIONAL-SEARCH-REPORT | US2006270807 |
| INTERNATIONAL-SEARCH-REPORT | US2015013904 |
| INTERNATIONAL-SEARCH-REPORT | US6657035 |
| INTERNATIONAL-SEARCH-REPORT | WO2008076146 |
| OPPOSITION | US6657035 |
| OPPOSITION | WO2019245755 |
| OTHER | US6657035 |
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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Authorisation
OPPO
Feb 19, 2025
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Mar 13, 2024
Feb 1, 2024
Decision to grant a European patent
Search/Exam
Jan 24, 2024
(Electronic) Receipt
Search/Exam
Jan 24, 2024
Filing of the translations of the claims
Search/Exam
Jan 24, 2024
French translation of claims
Search/Exam
Jan 24, 2024
German translation of the claims
Search/Exam
Jan 24, 2024
Letter accompanying subsequently filed items
Search/Exam
Dec 19, 2023
Dec 15, 2023
Dec 11, 2023
Non-patent literature filed by a third party
Search/Exam
Dec 11, 2023
Non-patent literature filed by a third party
Search/Exam
Dec 11, 2023
Non-patent literature filed by a third party
Search/Exam
Dec 11, 2023
Observations by third parties
Search/Exam
Oct 23, 2023
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Oct 23, 2023
Intention to grant (signatures)
Search/Exam
Oct 23, 2023
Text intended for grant (clean copy)
Search/Exam
Oct 23, 2023
Jun 15, 2022
(Electronic) Receipt
Search/Exam
Jun 15, 2022
Amended claims with annotations
Search/Exam
Jun 15, 2022
Amended claims with annotations
Search/Exam
Jun 15, 2022
Claims
Search/Exam
Jun 15, 2022
Claims
Search/Exam
Jun 15, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 15, 2022
Feb 17, 2022
Annex to the communication
Search/Exam
Feb 17, 2022
Communication from the Examining Division
Search/Exam
Feb 10, 2022
Examination started
Search/Exam
Aug 4, 2021
(Electronic) Receipt
Search/Exam
Aug 4, 2021
Aug 4, 2021
Amended claims with annotations
Search/Exam
Aug 4, 2021
Amendments received before examination
Search/Exam
Aug 4, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 14, 2021
Mar 17, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 17, 2021
Mar 17, 2021
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Feb 9, 2021
Feb 5, 2021
Communication to designated inventor
Search/Exam
Feb 5, 2021
Communication to designated inventor
Search/Exam
Jan 19, 2021
Jan 19, 2021
Jan 18, 2021
Dec 28, 2020
Dec 22, 2020
(Electronic) Receipt
Search/Exam
Dec 22, 2020
Request for entry into the European phase
Search/Exam
Nov 13, 2020
Information on entry into European phase
Search/Exam
Nov 9, 2020
Notification of the recording of a change
Search/Exam
Nov 9, 2020
Notification of the recording of a change
Search/Exam
Jan 29, 2020
Jan 9, 2020
Copy of the international search report
Search/Exam
Jan 9, 2020
Published international application - A1
Search/Exam
Oct 24, 2019
ISR: cited documents
PCTISA
Oct 24, 2019
Oct 24, 2019
Oct 24, 2019
Jul 29, 2019
Jul 15, 2019
Abstract
PCTISA
Jul 15, 2019
Annex
PCTISA
Jul 15, 2019
Claims
PCTISA
Jul 15, 2019
Description
PCTISA
Jul 15, 2019
Jul 15, 2019
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