A group of leading smartphone manufacturers joined Apple Inc. in a legal battle against Qualcomm Inc., claiming that the chip maker charges excessive patent licenses and violates antitrust laws.

Taiwan-based contract manufacturers Compal Electronics Inc., Foxconn Technology Group, Pegatron Corp. and Wistron Corp. filed a lawsuit against Qualcomm late Tuesday night in U.S. federal district court in San Diego, according to Theodore J....

The text above is a summary, you can read full article here.