Huawei Technologies Ltd. Said it wants "reasonable compensation" but gave no financial figure for its claim against Samsung Electronics Ltd.
Huawei is a leading maker of network switching gear used by phone companies and launched its own smartphone brand in 2009. It became the third vendor last year and accounted for 8.2 per cent of global sales in the first quarter of this year, according to International Data Corporation (IDC).
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Samsung is the biggest global mobile phone brand, with a 24.5 per cent market share in the first quarter, according to IDC. Apple was second with 15.3 per cent.
The lawsuits against Samsung cover four patents for mobile devices and eight for networks, according to a Huawei spokesman, Joe Kelly. He said Huawei was not asking the court to restrict sales of Samsung handsets.
In a statement, the president of Huawei's intellectual property department, Ding Jianxing, expressed hope Samsung would sign a license agreement "and work together with Huawei to jointly drive the industry forward."
In an email, Samsung said, "We will thoroughly review the complaint and take appropriate action to defend Samsung's business interests."
Huawei says it spent USD 9 billion on research and development last year, which government data show is the biggest research budget of any Chinese company.
Huawei says it has patent cross-licensing agreements with dozens of companies. Payments for such technology licenses can run to hundreds of millions of dollars a year.
The cases were filed in US federal court in California and in Shenzhen, the southern Chinese city where Huawei is headquartered, according to the company.