The patent EP2550191 was granted to Siemens on Jan 26, 2022. The application was originally filed on Apr 28, 2010 under application number EP10722972A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - LKAB, "Remote-controlled locomotives 1000 meters under ground", Remote-controlled locomotives 1000 meters under ground, (19970000), XP055517744 | - |
| OPPOSITION | - Masahiro Fujiwara et al, "Full-automatic Operation System for Nanakuma Line Subway in Fukuoka", Hitachi Review, (20051200), pages 185 - 192, URL: http://www.hitachi.com/rev/pdf/2005/r2005_04_106.pdf, XP055517738 | - |
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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English translation of the claims
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German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Refund of fees
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Communication to designated inventor
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Communication to designated inventor
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(Electronic) Receipt
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Amendments received before examination
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Request for entry into the European phase
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Information on entry into European phase
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Copy of the international search report
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Copy of the international search report
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Sep 29, 2011
Published international application - A1
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(Electronic) Receipt
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Abstract
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Apr 28, 2010
Claims
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Apr 28, 2010
Description
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Apr 28, 2010
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Apr 28, 2010