Patent No. EP1550189 (titled "Frame") was filed by Roxtec on Oct 8, 2003. The application was issued on Mar 11, 2020.

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 |
|---|---|---|
| HAUFF TECHNIK | Oct 25, 2017 | KONIG SZYNKA TILMANN VON RENESSE PATENTANWALTE PARTNERSCHAFT MBB MUNCHEN |
| BIMED TEKNIK ALETLER SANAYI VE TICARET | Oct 24, 2017 | DREISS PATENTANWALTE PARTG 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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