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The patent EP3816056 was granted to GD Societa PER Azioni on Apr 5, 2023. The application was originally filed on Oct 29, 2020 under application number EP20204753A. 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 | WO2018214648 |
| DESCRIPTION | WO2019049046 |
| DESCRIPTION | WO2019049058 |
| EXAMINATION | US4174780 |
| EXAMINATION | US4962629 |
| OPPOSITION | DE1002676 |
| OPPOSITION | DE102014000350 |
| OPPOSITION | DE60121663T |
| OPPOSITION | EP0838401 |
| OPPOSITION | EP2551204 |
| OPPOSITION | EP3408182 |
| OPPOSITION | US4174780 |
| OPPOSITION | US4196810 |
| OPPOSITION | US4795019 |
| OPPOSITION | US4962629 |
| OPPOSITION | WO02083502 |
| OPPOSITION | WO2015155727 |
| OPPOSITION | WO2018122298 |
| OPPOSITION | WO2019049058 |
| SEARCH | EP0838401 |
| SEARCH | US4196810 |
| SEARCH | US4795019 |
| SEARCH | WO02083502 |
| SEARCH | WO2015155727 |
| SEARCH | WO2018122298 |
| SEARCH | WO2019049058 |
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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Nov 4, 2025
Nov 4, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Means of redress
OPPO
Jul 30, 2025
May 26, 2025
May 26, 2025
May 12, 2025
May 7, 2025
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Apr 29, 2025
Apr 29, 2025
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
Nov 26, 2024
May 28, 2024
May 23, 2024
Annex
Search/Exam
May 23, 2024
Letter accompanying subsequently filed items
Search/Exam
May 23, 2024
Submission concerning representation
Search/Exam
May 2, 2024
Apr 25, 2024
Apr 25, 2024
Apr 25, 2024
Feb 8, 2024
Feb 5, 2024
Feb 5, 2024
Feb 5, 2024
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Jan 19, 2024
Jan 19, 2024
Dec 6, 2023
Nov 29, 2023
Nov 29, 2023
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Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Nov 29, 2023
Sep 7, 2023
Aug 31, 2023
Apr 18, 2023
Mar 10, 2023
Decision to grant a European patent
Search/Exam
Feb 24, 2023
(Electronic) Receipt
Search/Exam
Feb 24, 2023
French translation of claims
Search/Exam
Feb 24, 2023
German translation of the claims
Search/Exam
Feb 24, 2023
Letter accompanying subsequently filed items
Search/Exam
Jan 13, 2023
Nov 22, 2022
Annexes in respect of a client data request
Search/Exam
Nov 22, 2022
Annexes in respect of a client data request
Search/Exam
Nov 22, 2022
Submission concerning representation
Search/Exam
Nov 22, 2022
Submission concerning representation
Search/Exam
Oct 24, 2022
Oct 24, 2022
Oct 24, 2022
Intention to grant (signatures)
Search/Exam
Oct 24, 2022
Text intended for grant (clean copy)
Search/Exam
Oct 24, 2022
Apr 19, 2022
(Electronic) Receipt
Search/Exam
Apr 19, 2022
Amended claims with annotations
Search/Exam
Apr 19, 2022
Claims
Search/Exam
Apr 19, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 19, 2022
Feb 21, 2022
Annex to the communication
Search/Exam
Feb 21, 2022
Communication from the Examining Division
Search/Exam
Feb 11, 2022
Examination started
Search/Exam
Oct 11, 2021
(Electronic) Receipt
Search/Exam
Oct 11, 2021
Oct 11, 2021
Amended description with annotations
Search/Exam
Oct 11, 2021
Amendments received before examination
Search/Exam
Oct 11, 2021
Letter accompanying subsequently filed items
Search/Exam
May 11, 2021
Apr 8, 2021
Notification of forthcoming publication
Search/Exam
Mar 2, 2021
Refund of fees
Search/Exam
Feb 26, 2021
Feb 26, 2021
European search opinion
Search/Exam
Feb 26, 2021
European search report
Search/Exam
Feb 26, 2021
Information on Search Strategy
Search/Exam
Feb 18, 2021
Search started
Search/Exam
Dec 29, 2020
(Electronic) Receipt
Search/Exam
Dec 29, 2020
Abstract
Search/Exam
Dec 29, 2020
Claims
Search/Exam
Dec 29, 2020
Description
Search/Exam
Dec 29, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 22, 2020
Communication to designated inventor
Search/Exam
Dec 22, 2020
Communication to designated inventor
Search/Exam
Dec 22, 2020
Communication to designated inventor
Search/Exam
Dec 22, 2020
Communication to designated inventor
Search/Exam
Nov 27, 2020
Letter concerning the priority
Search/Exam
Nov 27, 2020
Priority document
Search/Exam
Oct 29, 2020
Oct 29, 2020
Designation of inventor
Search/Exam
Oct 29, 2020
Drawings
Search/Exam
Oct 29, 2020
Request for grant of a European patent
Search/Exam
Oct 29, 2020
Jun 9, 2020
Priority search results copy provided by EPO
Search/Exam