Xiang Guangchun v. Reexamination Board under SIPO & the third party Wenzhou Huakai Slope Cutting Machine Co., Ltd. through administrative litigation a
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Xiang Guangchun v. Reexamination Board under SIPO & the third party Wenzhou Huakai Slope Cutting Machine Co., Ltd. through administrative litigation against “Electronic Slope Cutting Machine” utility model patent invalid dispute
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