西安市未央区人民法院民 事 判 决 书（2020）陕0112民初15052号 原告西安腾盾商贸有限公司。住所地：西安市碑林区。统一社会信用代码91610103311077646C。法定代表人李慧婷，总经理。委托代理人苏丹，陕西信邦律师事务所律师。被告中核混凝土股份有限公司。住所地：西安市。统一社会信用代码91610132722877429J。法定代表人杜国伟,董事长。委托代理人陈辉，陕西连邦律师事务所律师。委托代理人赵静，陕西连邦律师事务所实习律师原告西安腾盾商贸有限公司与被告中核混凝土股份有限公司买卖合同纠纷一案，本院受理后，依法适用简易程序，公开开庭进行了审理。原告委托代理人苏丹，被告委托代理人陈辉、赵静均到庭参加诉讼。本案现已审理终结。原告诉称，2016年9月，其与被告约定按被告需求为被告供应砂石材料。其依约向被告供货，被告按月与其进行结算，出具结算单，双方确认截止2017年12月31日，其总供货价值4809131.55元，被告陆续支付了部分货款，余款未付。诉请：被告支付拖欠的货款1109131.55元及利息暂计74635元（利息暂自2018年1月1日计算至2020年6月1日，应支付至货款清偿之日），暂合计1183766.55元；诉讼费由被告承担。被告辩称，原告已于2019年3月6日将1109131.55元的货款所涉债权转让给案外人陕西万禄实业有限公司，其向新的债权人全部履行了付款义务。应驳回原告的诉讼请求。经审理查明，原告自2016年9月24日至2017年12月31日为被告供应砂石材料，并按月结算，双方经办人在“中核混凝土股份有限公司原材料结算单”上签字确认。被告陆续向原告支付了部分货款。2019年3月6日，原告和案外人陕西万禄实业有限公司共同向被告出具“委托书”，通知被告将拖欠原告的货款1109131.55元转至案外人陕西万禄实业有限公司账户，由此引起的一切经济纠纷与被告无关。2019年3月25日，原告作出“告知函”，通知被告撤回“委托书”，要求被告将欠款1109131.55元支付至其公司账户。并于2019年3月28日向被告公司的书记孟凡君邮寄送达了“告知函”。2020年9月8日，陕西万禄实业有限公司向被告出具“情况说明”，载明：原告于2019年3月6日将对被告1109131.55元的债权转让给其公司，并与其共同向被告发送了债权转让通知（委托书）。现债务人已向其全部付清了该转让债权。另查明，原告与陕西万禄实业有限公司均向被告供应材料，被告分别与原告和陕西万禄实业有限公司进行滚动式结算。上述事实，有“中核混凝土股份有限公司原材料结算单”，“委托书”，“告知函”，“情况说明”等证据以及双方当事人陈述在卷佐证。本院认为，原告提交的结算单，证明其与被告之间形成了买卖合同关系，且被告已支付了原告部分货款，剩余货款未付，双方存在债权债务关系。原告向被告出具的“委托书”，实为债权转让通知。《中华人民共和国合同法》第八十条规定：“债权人转让权利的，应当通知债务人。未经通知，该转让对债务人不发生效力。债权人转让权利的通知不得撤销，但经受让人同意的除外”。原告将债权转让给案外人陕西万禄实业有限公司，并履行了向债务人通知的责任，该债权转让有效。此后，原告发出“告知函”，要求撤销债权转让，受让人陕西万禄实业有限公司仅出具了“情况说明”，证明被告已经按债权转让通知向其清偿了转让债权，未表示同意撤销债权转让通知。故，原告发出的债权转让撤销的通知无效，再向被告主张已转让的权利，本院不予支持。依照《中华人民共和国合同法》第八十条，最高人民法院《关于适用的解释》第九十条之规定，判决如下：驳回原告西安腾盾商贸有限公司的诉讼请求。案件受理费15453元（原告已预交），由原告自行负担。                                                                        如不服本判决，可在判决书送达之日起十五日内，向本院递交上诉状，并按对方当事人的人数提出副本，上诉于陕西省西安市中级人民法院。    审  判  员  王  琦          二○二〇年九月十日 书  记  员  叶  娟                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