Patent No. EP1517850 (titled "Elevator Provided With A Coated Hoisting Rope") was filed by Kone on May 28, 2003. The application was issued on Aug 20, 2014.

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 |
|---|---|---|
| BEKAERT | May 19, 2015 | SEYNHAEVE |
| ORONA | May 19, 2015 | CARPINTERO LOPEZ |
| BRUGG DRAHTSEIL | Mar 6, 2015 | KELLER SCHNEIDER PATENT UND MARKENANWALTE |
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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