The patent EP3299327 was granted to Otis Elevator on Jul 30, 2025. The application was originally filed on Sep 22, 2017 under application number EP17192731A. 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.
| Citation Phase | Publication Number | 
|---|---|
| OPPOSITION | EP1819624 | 
| OPPOSITION | GB2514355 | 
| OPPOSITION | KR20160027311 | 
| OPPOSITION | US2004206583 | 
| OPPOSITION | US2014351642 | 
| OPPOSITION | US2016012707 | 
| OPPOSITION | US2016185568 | 
| OPPOSITION | US8965817 | 
| OPPOSITION | WO2010122041 | 
| OPPOSITION | WO2013055346 | 
| OPPOSITION | WO2016091309 | 
| SEARCH | US2016185568 | 
| SEARCH | WO2013055346 | 
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 | 
|---|---|
| OPPOSITION | - H. Kubota, Et Al, "New Elevator Maintenance System Employing Diagnostic Technology: HERIOS", Elevator World, (19990801), vol. 47, no. 8, pages 74 - 80, XP093014073 | 
| OPPOSITION | - W.K. TOU et al., "Elevator Absolute Landing Position Sensor Using Infrared Interrupter and MEMS Accelerator", Proceedings of the 2015 5th Australian Control Conference (AUCC, Gold Coast, Australia, (20151106), ISBN 978-1-4673-9552-6, pages 366 - 370, XP032837804 | 
| SEARCH | - KUBOTA H ET AL, "NEW ELEVATOR MAINTENANCE SYSTEM EMPLOYING DIAGNOSTIC TECHNOLOGY: HERIOS", HITACHI REVIEW, HITACHI LTD. TOKYO, JP, (19971201), vol. 46, no. 6, ISSN 0018-277X, pages 285 - 292, XP000832257 [A] 1-15 * the whole document * | 
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Decision to grant a European patent
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Feb 24, 2022
(Electronic) Receipt
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Feb 24, 2022
Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Feb 24, 2022
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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(Electronic) Receipt
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Jun 24, 2021
Amended claims with annotations
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Jun 24, 2021
Amended description with annotations
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Jun 24, 2021
Claims
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Jun 24, 2021
Description
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Jun 24, 2021
Letter accompanying subsequently filed items
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Jun 24, 2021
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(Electronic) Receipt
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Letter accompanying subsequently filed items
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Annex to the communication
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Communication from the Examining Division
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(Electronic) Receipt
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Amended claims with annotations
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Amended claims with annotations
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Amended description with annotations
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Claims
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Description
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Letter accompanying subsequently filed items
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Jun 25, 2020
Annex to the communication
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Jun 25, 2020
Communication from the Examining Division
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May 15, 2020
Examination started
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Nov 23, 2018
(Electronic) Receipt
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Nov 23, 2018
Letter accompanying subsequently filed items
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Nov 23, 2018
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(Electronic) Receipt
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Sep 28, 2018
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Amended claims with annotations
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Sep 28, 2018
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Amended description with annotations
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Sep 28, 2018
Amendments received before examination
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Sep 28, 2018
Letter concerning fees and payments
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May 28, 2018
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Notification of forthcoming publication
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Feb 12, 2018
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European search opinion
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Feb 12, 2018
European search report
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Feb 12, 2018
Information on Search Strategy
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Jan 31, 2018
Search started
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Nov 15, 2017
Communication to designated inventor
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Nov 15, 2017
Communication to designated inventor
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Nov 8, 2017
Letter concerning the priority
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Nov 8, 2017
Priority document
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Sep 22, 2017
Abstract
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Claims
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Sep 22, 2017
Description
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Sep 22, 2017
Designation of inventor
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Sep 22, 2017
Drawings
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Sep 22, 2017
Request for grant of a European patent
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