NSN had, in July last year, announced the acquisition of Motorola's wireless network business for USD 1.2 billion.
Huawei and Motorola have had a cooperative relationship since 2000, in which Motorola resold Huawei's products to customers under the Motorola brand name.
During this period, Motorola was provided with products and confidential Huawei IP developed by the Chinese company, Huawei said in a statement here.
Huawei said it has been seeking assurance from Motorola that it would not transfer this confidential information to NSN, post the acquisition.
"Motorola, however, has not responded with assurances that it will prevent disclosure of that information to NSN. If Huawei's proprietary commercial property and information is transferred to a third party, Huawei will suffer irreparable commercial damage," Huawei said.
Motorola's failure to adopt measures sufficient to ensure that Huawei's IP information remains confidential has compelled the company to file for the appropriate legal protection of its rights, it added.
Interestingly, in July last year, Motorola had also sued Huawei for allegedly conspiring with its former employees for stealing trade secrets.