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The patent EP3670984 was granted to Hecht Technologie on Mar 9, 2022. The application was originally filed on Dec 19, 2019 under application number EP19218070A. 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 |
|---|---|
| EXAMINATION | EP0300113 |
| SEARCH | DE4432562 |
| SEARCH | EP0300113 |
| SEARCH | WO2013044403 |
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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Oct 6, 2025
Oct 6, 2025
Sep 23, 2025
Sep 23, 2025
Sep 18, 2025
Jul 25, 2025
Jul 25, 2025
Jul 18, 2025
(Electronic) Receipt
Appeal
Jul 18, 2025
(Electronic) Receipt
Appeal
Jul 18, 2025
Jul 18, 2025
Jul 18, 2025
Reply to appeal
Appeal
Jul 18, 2025
Reply to appeal
Appeal
Apr 11, 2025
Mar 19, 2025
Mar 19, 2025
Mar 12, 2025
(Electronic) Receipt
Appeal
Mar 12, 2025
(Electronic) Receipt
Appeal
Mar 12, 2025
Mar 12, 2025
Mar 12, 2025
Mar 12, 2025
Mar 12, 2025
Mar 12, 2025
Feb 7, 2025
Jan 20, 2025
Jan 20, 2025
Jan 13, 2025
(Electronic) Receipt
Appeal
Jan 13, 2025
(Electronic) Receipt
Appeal
Jan 13, 2025
Jan 13, 2025
Notice of appeal
Appeal
Jan 13, 2025
Notice of appeal
Appeal
Jan 13, 2025
Notice of appeal
Appeal
Jan 13, 2025
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Means of redress
Search/Exam
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Nov 12, 2024
Sep 19, 2024
Aug 22, 2024
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May 17, 2024
May 8, 2024
Non-public annex
OPPO
Mar 21, 2024
Mar 14, 2024
Mar 14, 2024
Mar 14, 2024
Mar 11, 2024
Mar 4, 2024
Mar 4, 2024
Mar 4, 2024
Feb 12, 2024
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Jun 13, 2023
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May 19, 2023
May 19, 2023
May 12, 2023
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May 8, 2023
May 2, 2023
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May 2, 2023
Dec 23, 2022
Dec 23, 2022
Dec 16, 2022
Dec 9, 2022
Dec 9, 2022
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Dec 9, 2022
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Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Dec 9, 2022
Mar 22, 2022
Feb 10, 2022
Decision to grant a European patent
Search/Exam
Jan 31, 2022
(Electronic) Receipt
Search/Exam
Jan 31, 2022
English translation of the claims
Search/Exam
Jan 31, 2022
Filing of the translations of the claims
Search/Exam
Jan 31, 2022
French translation of claims
Search/Exam
Jan 31, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 22, 2021
Sep 22, 2021
Sep 22, 2021
Sep 22, 2021
Intention to grant (signatures)
Search/Exam
Sep 22, 2021
Text intended for grant (clean copy)
Search/Exam
Sep 22, 2021
Jul 26, 2021
Examination started
Search/Exam
Jan 25, 2021
(Electronic) Receipt
Search/Exam
Jan 25, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 25, 2021
Jan 14, 2021
Dec 22, 2020
(Electronic) Receipt
Search/Exam
Dec 22, 2020
Dec 22, 2020
Dec 22, 2020
Amended claims with annotations
Search/Exam
Dec 22, 2020
Amended claims with annotations
Search/Exam
Dec 22, 2020
Dec 22, 2020
Dec 22, 2020
Amended description with annotations
Search/Exam
Dec 22, 2020
Amended description with annotations
Search/Exam
Dec 22, 2020
Amendments received before examination
Search/Exam
Dec 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 29, 2020
May 27, 2020
Notification of forthcoming publication
Search/Exam
May 4, 2020
May 4, 2020
European search opinion
Search/Exam
May 4, 2020
European search report
Search/Exam
May 4, 2020
Information on Search Strategy
Search/Exam
Apr 16, 2020
Search started
Search/Exam
Feb 14, 2020
Communication to designated inventor
Search/Exam
Jan 31, 2020
Letter concerning the priority
Search/Exam
Jan 31, 2020
Priority document
Search/Exam
Jan 22, 2020
Letter concerning the priority
Search/Exam
Jan 22, 2020
Priority document
Search/Exam
Dec 19, 2019
Abstract
Search/Exam
Dec 19, 2019
Dec 19, 2019
Claims
Search/Exam
Dec 19, 2019
Description
Search/Exam
Dec 19, 2019
Designation of inventor
Search/Exam
Dec 19, 2019
Drawings
Search/Exam
Dec 19, 2019
Request for grant of a European patent
Search/Exam