Patent No. EP3476968 (titled "Low-Density Hot-Dipped Steel And Manufacturing Method Therefor") was filed by Baoshan Iron & Steel on Jun 14, 2017. The application was issued on May 19, 2021.

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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