Patent No. EP1426540 (titled "Sealing Arrangement For Junctions Between A Structural Member And A Wall And A Corresponding Sealing Strip") was filed by Lehrhuber on Dec 5, 2003. The application was issued on Apr 6, 2016.

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 |
|---|---|---|
| LOHMANN GMBH & CO. KG | Jan 9, 2017 | OKOAMPAH |
| PROTEKTORWERK FLORENZ MAISCH GMBH & CO. KG | Jan 5, 2017 | GEITZ 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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