Patent No. EP3023569 (titled "Spacer For Spacing Glass Sheets Of A Multiple Glazed Window, A Multiple Glazed Window, And A Method For The Production Of A Spacer") was filed by ALU PRO on Apr 10, 2012. The application was issued on Feb 12, 2025.

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 |
|---|---|---|
| TECHNOFORM GLASS INSULATION HOLDING | Mar 1, 2019 | KRAMER BARSKE SCHMIDTCHEN 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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