Huawei Technologies Co has won a temporary injunction against former partner Motorola, which prevents the United States firm from passing intellectual property rights information to Nokia Siemens Networks.

The Northern District Court of Illinois has issued a temporary restraining order for the lawsuit application by Huawei, China's biggest telecommunications maker.

"Motorola is hereby ordered not to disclose any of the plaintiff's (Huawei) confidential information to defendant Nokia Siemens Networks," the court said in the order.

Huawei filed the lawsuit against former partner Motorola to stop it transferring IPR to Nokia Siemens Networks, which seeks to complete its US$1.2 billion acquisition of Motorola's wireless network business, the Shenzhen-based firm said yesterday.

Huawei said the acquisition deal would transfer the Chinese firm's core technologies to Nokia Siemens Networks, one of its biggest rivals globally.

The lawsuit represented the intensely fierce competition among the top global telecom equipment makers, industry insiders said.

Since 2000, Huawei's products have been distributed by Motorola under the latter's brand.

Nearly half of Huawei's over 100,000 employees are involved in research and development and it sinks an average of 10 percent of its total revenue to R&D annually.