Litigious US vendor Trading Technologies (TT) has filed patent infringement suits against Cunningham Trading Systems and Interactive Brokers.
In addition, the firm has added to patent claims already filed against SunGard/GL Trade, Futurepath Trading, BGC Partners and CQG.
TT has numerous lawsuits against brokerages and other vendors over patents related to its MD Trader product, the order-entry screen incorporated in its X_Trader software.
Most have settled out of court for a nominal sum while one, eSpeed, was ordered by a jury to pay its rival $3.5 million in damages in 2007.