The lawyers for Huawei Chief Financial Officer Meng Wanzhou are suing the Canadian government, its border agency and federal police, over violation of Wanzhou's constitutional rights. The Chinese company is also said to be ready to preparing to file a lawsuit in the U.S.

Canada arrested Meng, the daughter of Huawei’s founder, in Vancouver on Dec. 1 at the request of the United States, which has brought sweeping charges against her and China’s Huawei Technologies Co that portray the company as a threat to U.S. national security. Meng was charged with bank and wire fraud to violate American sanctions against Iran.

In a civil lawsuit filed in the British Columbia Supreme Court on Friday, Meng’s lawyers said the manner in which officers obtained evidence and information from Meng constituted serious violations of the Canadian Charter of Rights and Freedoms.

It added that Canadian Border Services Agency (CBSA) officers deliberately delayed the immediate execution of an arrest warrant and unlawfully subjected Meng to detention, search and interrogation to extract evidence from her before she was arrested.

Meng, who is out on bail, is due to appear in a Vancouver court at 10 a.m. PST (1800 GMT) on Wednesday, when a date will be set for her extradition hearing. The Canadian government approved her extradition proceedings on Friday.

Seperately, the New York Times report that Huawei will file a lawsuit in the Eastern District of Texas to sue the United States government for banning federal agencies from using the company’s products.

Huawei declined to comment on the reports.

The Chinese government on Monday lashed out at the U.S. campaign against Huawei even as it hailed progress in negotiations over trade and North Korean denuclearization.

Zhang Yesui, a former ambassador to Washington, said the U.S. was applying a "typical double standard" to Huawei that was "neither fair nor ethical."

U.S. efforts to persuade other governments to block Huawei out of their telecom networks violate the rules of the World Trade Organization, he said.