https://apnews.com/c40522d81852c53628839355b5c6beb7

BEIJING (AP) — Chinese tech giant Huawei accused U.S. phone carrier Verizon of violating its patents in a lawsuit filed Thursday, broadening efforts to defend company's business in the United States amid government sanctions.

Huawei Technologies Ltd. accused Verizon Communications Inc. of violating 12 patents on optical transmission, digital communications and other technology, according to a copy of the lawsuit released by the company. Huawei said it filed the lawsuit after negotiations failed to produce a licensing agreement.