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The patent EP3906122 was granted to SMS Group on Feb 8, 2023. The application was filed on Dec 2, 2019 under application number EP19816577A. 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 |
|---|---|---|---|
| PRIMETALS AUSTRIA | Nov 7, 2023 | METALSLINZ | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1436104 |
| DESCRIPTION | EP1648626 |
| INTERNATIONAL-SEARCH-REPORT | AT509455 |
| INTERNATIONAL-SEARCH-REPORT | DE4417274 |
| OPPOSITION | CN202290757U |
| OPPOSITION | CN2719433Y |
| OPPOSITION | DE3331055 |
| OPPOSITION | EP2572808 |
| OPPOSITION | US4744235 |
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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Dec 22, 2025
Dec 22, 2025
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Dec 3, 2025
Nov 28, 2025
(Electronic) Receipt
Appeal
Nov 28, 2025
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Description
Appeal
Nov 28, 2025
Description
Appeal
Nov 28, 2025
Description
Appeal
Nov 28, 2025
Nov 28, 2025
Reply to appeal
Appeal
Jul 28, 2025
Jul 28, 2025
Jul 17, 2025
(Electronic) Receipt
Appeal
Jul 17, 2025
Notice of appeal
Appeal
Jul 17, 2025
May 20, 2025
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Means of redress
OPPO
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Authorisation
OPPO
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Jul 1, 2024
Annexes in respect of a client data request
Search/Exam
Jul 1, 2024
May 17, 2024
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Feb 21, 2023
Jan 12, 2023
Decision to grant a European patent
Search/Exam
Nov 21, 2022
(Electronic) Receipt
Search/Exam
Nov 21, 2022
English translation of the claims
Search/Exam
Nov 21, 2022
Filing of the translations of the claims
Search/Exam
Nov 21, 2022
French translation of claims
Search/Exam
Nov 21, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 20, 2022
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Intention to grant (signatures)
Search/Exam
Jul 20, 2022
Text intended for grant (clean copy)
Search/Exam
Jul 20, 2022
Jun 24, 2022
Examination started
Search/Exam
Apr 11, 2022
(Electronic) Receipt
Search/Exam
Apr 11, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 11, 2022
Mar 30, 2022
Oct 13, 2021
Aug 30, 2021
(Electronic) Receipt
Search/Exam
Aug 30, 2021
Aug 30, 2021
Amended claims with annotations
Search/Exam
Aug 30, 2021
Amendments received before examination
Search/Exam
Aug 30, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 11, 2021
Jul 12, 2021
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Jun 22, 2021
(Electronic) Receipt
Search/Exam
Jun 22, 2021
Request for entry into the European phase
Search/Exam
May 17, 2021
Information on entry into European phase
Search/Exam
Dec 8, 2020
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Dec 3, 2020
Notification of election of EPO
Search/Exam
Nov 21, 2020
Oct 29, 2020
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PCT demand form
PCT2
Oct 23, 2020
Oct 23, 2020
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Jul 27, 2020
Jul 9, 2020
Copy of the international search report
Search/Exam
Jul 9, 2020
Copy of the international search report
Search/Exam
Jul 9, 2020
Published international application - A1
Search/Exam
Mar 25, 2020
ISR: cited documents
PCTISA
Mar 25, 2020
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Mar 25, 2020
Dec 20, 2019
Dec 19, 2019
Dec 16, 2019
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Dec 2, 2019
(Electronic) Receipt
PCTRO
Dec 2, 2019
Abstract
PCTRO
Dec 2, 2019
Claims
PCTRO
Dec 2, 2019
Description
PCTRO
Dec 2, 2019
Dec 2, 2019
Drawings
PCTRO
Dec 2, 2019