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The patent EP3574177 was granted to Clearwell Technology on Oct 18, 2023. The application was filed on Jan 18, 2018 under application number EP18701223A. 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 |
|---|---|---|---|
| DE GASPARI OSGNACH | Jul 11, 2024 | PELANDA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US3588303 |
| INTERNATIONAL-SEARCH-REPORT | GB2528054 |
| INTERNATIONAL-SEARCH-REPORT | US2008257549 |
| INTERNATIONAL-SEARCH-REPORT | US2016130903 |
| INTERNATIONAL-SEARCH-REPORT | US3602620 |
| INTERNATIONAL-SEARCH-REPORT | US4864093 |
| OPPOSITION | EP3482036 |
| OPPOSITION | GB2559217 |
| OPPOSITION | US1631290 |
| OPPOSITION | US3602620 |
| OPPOSITION | WO2016079512 |
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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Jan 8, 2026
Jan 2, 2026
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Authorisation
OPPO
Jan 2, 2026
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Oct 31, 2023
Sep 21, 2023
Decision to grant a European patent
Search/Exam
Sep 11, 2023
(Electronic) Receipt
Search/Exam
Sep 11, 2023
Filing of the translations of the claims
Search/Exam
Sep 11, 2023
French translation of claims
Search/Exam
Sep 11, 2023
German translation of the claims
Search/Exam
Sep 11, 2023
Letter accompanying subsequently filed items
Search/Exam
May 23, 2023
May 23, 2023
May 23, 2023
May 23, 2023
Intention to grant (signatures)
Search/Exam
May 23, 2023
Text intended for grant (clean copy)
Search/Exam
May 23, 2023
May 3, 2023
(Electronic) Receipt
Search/Exam
May 3, 2023
Amended claims with annotations
Search/Exam
May 3, 2023
Amended description with annotations
Search/Exam
May 3, 2023
Claims
Search/Exam
May 3, 2023
Description
Search/Exam
May 3, 2023
Letter accompanying subsequently filed items
Search/Exam
May 3, 2023
Apr 28, 2023
Annex to the communication
Search/Exam
Apr 28, 2023
Consultation by telephone/in person
Search/Exam
Apr 28, 2023
Apr 21, 2023
(Electronic) Receipt
Search/Exam
Apr 21, 2023
Amended claims with annotations
Search/Exam
Apr 21, 2023
Claims
Search/Exam
Apr 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Apr 21, 2023
Nov 15, 2022
Nov 10, 2022
(Electronic) Receipt
Search/Exam
Nov 10, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 10, 2022
Oct 11, 2022
Annex to the communication
Search/Exam
Oct 11, 2022
Communication from the Examining Division
Search/Exam
Nov 10, 2021
Document concerning representation
Search/Exam
Nov 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2021
(Electronic) Receipt
Search/Exam
Jan 11, 2021
Amended claims with annotations
Search/Exam
Jan 11, 2021
Claims
Search/Exam
Jan 11, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2021
Sep 4, 2020
(Electronic) Receipt
Search/Exam
Sep 4, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 4, 2020
Matter concerning the application
Search/Exam
Aug 31, 2020
Annex to the communication
Search/Exam
Aug 31, 2020
Aug 31, 2020
May 29, 2020
Document concerning representation
Search/Exam
May 4, 2020
Annex to the communication
Search/Exam
May 4, 2020
Communication from the Examining Division
Search/Exam
Apr 24, 2020
Examination started
Search/Exam
Mar 11, 2020
(Electronic) Receipt
Search/Exam
Mar 11, 2020
Mar 11, 2020
Amended claims with annotations
Search/Exam
Mar 11, 2020
Mar 11, 2020
Amended description with annotations
Search/Exam
Mar 11, 2020
Amendments received before examination
Search/Exam
Mar 11, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 6, 2019
Sep 10, 2019
Sep 6, 2019
Communication to designated inventor
Search/Exam
Sep 6, 2019
Communication to designated inventor
Search/Exam
Sep 4, 2019
(Electronic) Receipt
Search/Exam
Sep 4, 2019
Sep 4, 2019
Amendments received before examination
Search/Exam
Sep 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Aug 23, 2019
(Electronic) Receipt
Search/Exam
Aug 23, 2019
Aug 23, 2019
Amended claims with annotations
Search/Exam
Aug 23, 2019
Request for entry into the European phase
Search/Exam
Aug 12, 2019
Jun 7, 2019
Information on entry into European phase
Search/Exam
Aug 22, 2018
Aug 22, 2018
Aug 2, 2018
Copy of the international search report
Search/Exam
Aug 2, 2018
Published international application - A1
Search/Exam
Apr 23, 2018
ISR: cited documents
PCTISA
Apr 20, 2018
Apr 20, 2018
Apr 20, 2018
Feb 6, 2018
Jan 26, 2018
Abstract
PCTISA
Jan 26, 2018
Claims
PCTISA
Jan 26, 2018
Description
PCTISA
Jan 26, 2018
Drawings
PCTISA
Jan 26, 2018
Jan 26, 2018
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Jan 26, 2018
Jan 26, 2018