On 15 November 2011, Qihoo issued proceedings against Tencent in the Guangdong Higher Court, asserting that Tencent had abused its dominant position, marking the beginning of the first anti-monopoly case in the internet arena. Qihoo lost the first trial and appealed. On 16 October 2014, the Supreme Court handed down its final decision, rejecting Qihoo’s appeal and upholding the first-instance court judgment. This was the first anti-monopoly case heard by the Supreme Court. The Supreme Court’s judgment elaborates detailed fundamental principles of anti-monopoly law, in particular in the context of abuse of dominance, which offers guidance and rules for future anti-monopoly litigation, especially those concerning abuse of dominance.