Traction Elevator System Using A Flexible, Flat Rope And A Permanent Magnet Machine

Patent No. EP1391413 (titled "Traction Elevator System Using A Flexible, Flat Rope And A Permanent Magnet Machine") was filed by Otis Elevator on Feb 19, 1999. The application was issued on Mar 9, 2022.

Patent Summary

Patent Family

Patent Family

Patent Oppositions (2)

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.

Dossier Documents

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.

  • Date

    Description

  • Get instant alerts for new documents

EP1391413

OTIS ELEVATOR
Application Number
EP03024661A
Filing Date
Feb 19, 1999
Status
Patent Maintained As Amended
Feb 4, 2022
Publication Date
Mar 9, 2022