Patent No. EP3429723 (titled "Vacuum Cleaner Filter Bag With Recycled Textile Materials And/Or Cotton Linters") was filed by Eurofilters on Mar 15, 2017. The application was issued on Jul 15, 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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