The patent EP3581534 was granted to Otis Elevator on Jul 27, 2022. The application was originally filed on Jun 17, 2019 under application number EP19180699A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 | CN107572334 | 
| OPPOSITION | EP3293137 | 
| OPPOSITION | US6604611 | 
| OPPOSITION | WO2009150251 | 
| SEARCH | EP1353868 | 
| SEARCH | EP3287405 | 
| SEARCH | US2017029244 | 
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Date
Description
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Authorisation
OPPO
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Aug 9, 2022
Jun 30, 2022
Decision to grant a European patent
Search/Exam
May 19, 2022
(Electronic) Receipt
Search/Exam
May 19, 2022
Filing of the translations of the claims
Search/Exam
May 19, 2022
French translation of claims
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May 19, 2022
German translation of the claims
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May 19, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 11, 2022
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Intention to grant (signatures)
Search/Exam
Jan 11, 2022
Text intended for grant (clean copy)
Search/Exam
Jan 11, 2022
Dec 7, 2021
Annex to a communication
Search/Exam
Dec 7, 2021
Annex to the communication
Search/Exam
Dec 7, 2021
Consultation by telephone/in person
Search/Exam
Dec 7, 2021
Dec 2, 2021
(Electronic) Receipt
Search/Exam
Dec 2, 2021
Drawings
Search/Exam
Dec 2, 2021
Letter accompanying subsequently filed items
Search/Exam
Dec 2, 2021
Aug 17, 2021
(Electronic) Receipt
Search/Exam
Aug 17, 2021
Amended claims with annotations
Search/Exam
Aug 17, 2021
Amended description with annotations
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Aug 17, 2021
Claims
Search/Exam
Aug 17, 2021
Description
Search/Exam
Aug 17, 2021
Letter accompanying subsequently filed items
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Aug 17, 2021
Apr 8, 2021
Annex to the communication
Search/Exam
Apr 8, 2021
Communication from the Examining Division
Search/Exam
Mar 25, 2021
Examination started
Search/Exam
Jun 18, 2020
(Electronic) Receipt
Search/Exam
Jun 18, 2020
Jun 18, 2020
Amended claims with annotations
Search/Exam
Jun 18, 2020
Jun 18, 2020
Amended description with annotations
Search/Exam
Jun 18, 2020
Amendments received before examination
Search/Exam
Jun 18, 2020
Letter accompanying subsequently filed items
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Jan 2, 2020
Nov 20, 2019
Notification of forthcoming publication
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Oct 30, 2019
Oct 30, 2019
European search opinion
Search/Exam
Oct 30, 2019
European search report
Search/Exam
Oct 30, 2019
Information on Search Strategy
Search/Exam
Oct 4, 2019
Search started
Search/Exam
Aug 9, 2019
Communication to designated inventor
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Aug 9, 2019
Communication to designated inventor
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Aug 9, 2019
Communication to designated inventor
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Aug 9, 2019
Communication to designated inventor
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Jul 9, 2019
Jun 20, 2019
Jun 17, 2019
Abstract
Search/Exam
Jun 17, 2019
Jun 17, 2019
Claims
Search/Exam
Jun 17, 2019
Description
Search/Exam
Jun 17, 2019
Designation of inventor
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Jun 17, 2019
Drawings
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Jun 17, 2019
Request for grant of a European patent
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