Patent No. EP3904268 (titled "Elevator Control System") was filed by Inventio on Apr 21, 2017. The application was issued on Aug 23, 2023.

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 | May 23, 2024 | SCHMITT NILSON SCHRAUD WAIBEL WOHLFROM PATENTANWALTE PARTNERSCHAFT MBB |
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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