Patent No. EP3740187 (titled "Instant Natural Dyes And Processes For Preparation Thereof") was filed by Meneses DA Silva on Oct 30, 2018. The application was issued on Dec 10, 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.
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