Patent No. EP3171231 (titled "Shock Detector Circuit And Operating Method Thereof") was filed by ETA Manufacture Horlogre Suisse on Nov 18, 2015. The application was issued on Jun 6, 2018.

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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