Chinese tech giant Huawei has filed a motion in a United States court challenging the constitutionality of a law that limits its sales of telecom equipment in the country.

Key points: Huawei says the US is using cybersecurity fears as an excuse to come after their company

Huawei says the US is using cybersecurity fears as an excuse to come after their company The company is trying to fast-track a legal process to allow it to give US customers access to Huawei equipment sooner

The company is trying to fast-track a legal process to allow it to give US customers access to Huawei equipment sooner Last week the US Secretary of State said Huawei was lying about its ties to the Chinese Communist Party and posed a "real risk"

Huawei's chief legal officer Song Liuping today said the company had filed a motion for summary judgment asking the court to rule on whether it is constitutional for the US to implement a military spending provision that bars the Government and its contractors from using Huawei equipment.

The Chinese company is the biggest global maker of network equipment, but it is now fighting to maintain access to major markets for next-generation communications as the US claims the company threatens international cybersecurity.

In March, Huawei launched its suit against the US law in Plano, Texas, the headquarters of its US operations.

Mr Song said the US was using security fears as an excuse. ( Supplied: Huawei )

The summary judgment motion, filed in the US District Court for the Eastern District of Texas, seeks to accelerate the legal process to give US customers access to Huawei equipment sooner, according to a statement from Huawei.

Mr Song said the "state-sanctioned campaign" against the company would not improve cybersecurity.

"Politicians in the US are using the strength of an entire nation to come after a private company," he said.

"This is not normal."

Tech company 'blacklisted'

Earlier this month, President Donald Trump signed an executive order barring US companies from using telecommunications equipment made by firms posing a national security risk.

The order invoked the International Emergency Economic Powers Act, which gives the President the authority to regulate commerce in response to a national emergency that threatens the US.

A senior Trump administration official told the ABC the order, which did not specifically name any nation or business, was "company and country agnostic".

The order was widely received as the President effectively blacklisting Huawei and saw Google suspend some business dealings with the Chinese company.

This suspended Huawei's access to Google's Android services not available via open source licensing.

"We are complying with the order and reviewing the implications," a Google spokesperson said.

However, last week the US temporarily lifted some trade restrictions on Huawei, granting the company a licence to buy US goods until August 2019.

The move meant Huawei's smartphones could still receive Android software updates.

Google suspended some aspects of its dealings with Huawei in response to the order. ( AP: Andy Wong )

Mr Trump, who is negotiating a trade deal with China, last week told reporters the software company could become part of that pact.

"You look at what they've done from a security standpoint, from a military standpoint, it's very dangerous," he said.

"If we made a deal, I could imagine Huawei being possibly included in some form, some part of a trade deal."

Founder takes aim at 'laughable' Trump

Earlier this week, Bloomberg asked Huawei founder Ren Zhengfei for his take on whether the company was being used as a bargaining chip in the ongoing negotiations.

Mr Ren scoffed in response.

"It's a big joke," he told Bloomberg.

"How are we related to China-US trade?"

Mr Trump said that Huawei was "very dangerous". ( AP: Andrew Harnik )

Mr Ren said he would ignore the President's attempts to negotiate, saying Mr Trump was contradictory and said his Twitter conduct was "laughable".

"How did he become a master of the art of the deal?" he said.

Huawei questions security fears

In today's statement, Mr Song said going through the court was Huawei's "last line of defence for justice" and said security concerns were a ruse.

"We believe that US politicians are using cybersecurity as an excuse to gain public support for actions that are designed to achieve other goals," he said.

"These actions will do nothing to make networks more secure.

"They provide a false sense of security and distract attention from the real challenges we face."

Last week, US Secretary of State Mike Pompeo accused Huawei Technologies of lying about its ties with the Chinese Government.

"The company is deeply tied not only to China, but to the Chinese Communist Party," Mr Pompeo said in an interview with CNBC.

"If you put your information in the hands of the Chinese Communist Party, it's de facto a real risk to you.

"They may not use it today, they may not use it tomorrow."

Mr Pompeo accused Huawei of being dishonest about its links with China's Government. ( Gage Skidmore/flickr.com/CC BY-SA 2.0 )

But Mr Song said the US Government had not shown any evidence that Huawei was a security threat.

"There is no gun, no smoke — only speculation," he said today.

The hearing on Huawei's motion is set to be held in September.

ABC/wires