Huawei is suing its tech rival Samsung in the U.S. and China over claims that its patents have been infringed. In a lawsuit filed Tuesday in federal court in San Francisco, Huawei claims Samsung infringes as many as 11 patents related to 4G mobile devices. It’s seeking cash compensation.

The patents cover communications networks and software to operate LTE networks established through international standard-setting organizations, Huawei said in the complaint. Huawei, one of the world’s largest makers of networking gear, said it’s offered to charge Samsung a fair and reasonable rate but Samsung refuses to pay.

Samsung said Wednesday it will file a countersuit against Huawei Technologies.The S. Korean company said Huawei's allegations are "groundless."Companies that get together to develop industry standards pledge to license any patents on "fair, reasonable and non-discriminatory" terms.

Ericsson AB, which vies with Huawei for title of top global networking company, also claimed Samsung refused to pay fair and reasonable rates. The companies later settled.