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The patent EP3900999 was granted to GTS Schweiz on Oct 16, 2024. The application was filed on Apr 21, 2020 under application number EP20170627A. 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 |
|---|---|---|---|
| DEUTSCHE BAHN | Jul 15, 2025 | - | ADMISSIBLE |
| SNCF RESEAU | Jul 11, 2025 | ARGYMA | ADMISSIBLE |
| SCHWEIZERISCHE BUNDESBAHNEN SBB | Jul 9, 2025 | RUTZ & PARTNER | ADMISSIBLE |
| PRORAIL | Jun 27, 2025 | MAISON | ADMISSIBLE |
| SIEMENS MOBILITY | Jun 19, 2025 | SIEMENS PATENT ATTORNEYS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CH39096 |
| OPPOSITION | DE102006030911 |
| OPPOSITION | DE102014209474 |
| OPPOSITION | DE10341324 |
| OPPOSITION | DE1055037 |
| OPPOSITION | DE1149043 |
| OPPOSITION | DE1530451 |
| OPPOSITION | DE2607328 |
| OPPOSITION | EP0052759 |
| OPPOSITION | EP0473834 |
| OPPOSITION | EP1038752 |
| OPPOSITION | EP1593575 |
| OPPOSITION | EP1750988 |
| OPPOSITION | EP2978654 |
| OPPOSITION | EP3539845 |
| OPPOSITION | JP2005212532 |
| OPPOSITION | JP2009001179 |
| OPPOSITION | JP2009051352 |
| OPPOSITION | JP2016157662 |
| OPPOSITION | JPH11192947 |
| OPPOSITION | WO2015028634 |
| SEARCH | DE1149043 |
| SEARCH | EP2978654 |
| SEARCH | EP3539845 |
| SEARCH | US2014032797 |
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.
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Oct 29, 2024
Sep 19, 2024
Decision to grant a European patent
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Sep 10, 2024
(Electronic) Receipt
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Sep 10, 2024
English translation of the claims
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Sep 10, 2024
Filing of the translations of the claims
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Sep 10, 2024
French translation of claims
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Sep 10, 2024
Letter accompanying subsequently filed items
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Aug 16, 2024
Aug 12, 2024
(Electronic) Receipt
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Aug 12, 2024
Annexes in respect of a client data request
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Aug 12, 2024
Letter accompanying subsequently filed items
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Aug 12, 2024
Jun 7, 2024
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Intention to grant (signatures)
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Jun 7, 2024
Text intended for grant (clean copy)
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Jun 7, 2024
Aug 24, 2023
(Electronic) Receipt
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Aug 24, 2023
Amended claims with annotations
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Aug 24, 2023
Amended description with annotations
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Aug 24, 2023
Claims
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Aug 24, 2023
Description
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Aug 24, 2023
Letter accompanying subsequently filed items
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Aug 24, 2023
Jul 17, 2023
Jul 11, 2023
(Electronic) Receipt
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Jul 11, 2023
Letter accompanying subsequently filed items
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Jul 11, 2023
Mar 7, 2023
Annex to the communication
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Mar 7, 2023
Communication from the Examining Division
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Feb 28, 2023
Examination started
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Oct 6, 2022
Sep 27, 2022
(Electronic) Receipt
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Sep 27, 2022
Annexes in respect of a client data request
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Sep 27, 2022
Letter accompanying subsequently filed items
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Sep 27, 2022
Apr 14, 2022
(Electronic) Receipt
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Apr 14, 2022
Apr 14, 2022
Amended claims with annotations
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Apr 14, 2022
Apr 14, 2022
Amended description with annotations
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Apr 14, 2022
Letter accompanying subsequently filed items
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Apr 14, 2022
Reply to Written Opinion prepared by the EPO
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Mar 18, 2022
(Electronic) Receipt
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Mar 18, 2022
Letter accompanying subsequently filed items
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Nov 2, 2021
Sep 29, 2021
Notification of forthcoming publication
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Sep 18, 2020
Sep 18, 2020
European search opinion
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Sep 18, 2020
European search report
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Sep 18, 2020
Information on Search Strategy
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Sep 7, 2020
Search started
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Jun 15, 2020
Communication to designated inventor
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Jun 15, 2020
Communication to designated inventor
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Jun 15, 2020
Communication to designated inventor
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Apr 21, 2020
Abstract
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Apr 21, 2020
Apr 21, 2020
Claims
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Apr 21, 2020
Description
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Apr 21, 2020
Designation of inventor
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Apr 21, 2020
Drawings
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Apr 21, 2020
Request for grant of a European patent
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