Patent No. EP3393994 (titled "Composition For A Pasty Filler Material, Pasty Filler, And Method For Producing A Pasty Filler Material") was filed by Knauf Insulation on Jun 23, 2016. The application was issued on Oct 7, 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.
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