Patent No. EP2558394 (titled "Elevator System") was filed by Kone on Apr 13, 2011. The application was issued on Jan 8, 2025.
Elevator system with motor drive load limiting, comprising an elevator car and a motor drive for moving the car according to a movement profile. The system limits motor drive loading to a maximum permitted value by adjusting the car's acceleration and deceleration in the movement profile based on the car's position and load.

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 |
|---|---|---|
| OTIS ELEVATOR | Mar 1, 2023 | DEHNS |
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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