Patent No. EP3084109 (titled "Plastic Insulating Course, Composite Profile And Window That Comprise Such An Insulating Course And Method For Producing A Frame For A Window") was filed by Aluk on Dec 17, 2014. The application was issued on Mar 23, 2022.

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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