Washington stops approving renewal of licenses to some US companies that have been selling essential components to the Chinese company, officials say, with Beijing vowing to "defend" rights of its firms.
US officials are creating a new formal policy of denial for shipping items to Huawei that would include items below the 5G level.
The US Commerce Department said it was amending an export rule to "strategically target Huawei's acquisition of semiconductors that are the direct product of certain US software and technology."
The future of US companies' ties to Huawei, the world's top maker of telecommunications equipment, remains uncertain after the Trump administration put the company on a blacklist in May, citing national security concerns.
Donald Trump’s decision to force American companies to stop doing business with the Chinese tech giant create losers on both sides.
The ruling effectively outlaws the offering and placing on the market of the finished product in Germany, including the sale. The iPhones 7plus, 7, 8, 8plus and X are affected, the court said.
Broadcom made an unsolicited bid last week to buy Qualcomm in an effort to become the dominant supplier of chips used in the 1.5 billion smartphones expected to be sold around the world this year.
The Court of Justice of the European Union (ECJ) will rule whether Intel offered illegal rebates to rivals for buying their computer chips.
BlackBerry's Chief Executive John Chen says they expect software sales to grow this year in line with previous forecasts.
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