Patent No. EP2864567 (titled "Insulating Web For A Compound Profile For Windows, Doors Or Facade Elements, And Method For Production Of Such An Insulating Web And Compound Profile Having Such An Insulating Web") was filed by Technoform Bautec Holding on Jun 20, 2013. The application was issued on Oct 9, 2019.

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.
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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