Administrative dispute over invalidation of a utility model patent between Yu Siji, the National Intellectual Property Administration and Dacheng-based Lide Anticorrosive Insulation Equipment Co., Ltd

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Administrative dispute over invalidation of a utility model patent between Yu Siji, the National Intellectual Property Administration and Dacheng-based Lide Anticorrosive Insulation Equipment Co., Ltd

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Updated : 2020-10-20