Huawei Technologies Co Ltd has scored a point in its patent dispute in China with its rival Samsung Electronics Co Ltd, which may weigh down on the South Korean company's business in the world's largest smartphone market, experts said.

The Patent Reexamination Board of the State Intellectual Property Office said on its official website that some of the patents involved in Samsung's lawsuit against Huawei are invalid.

Among the eight patents, five are not valid, one is partially valid and only two are valid, the office said on Sept 30.