Software firm GL Trade has introduced evidence it claims invalidates Trading Technologies' (TT) MD Trader patent and has asked for a summary judgment in its patent infringement case with the rival ISV.
In a 31 May filing, GL Trade claimed that it had developed a front-end trading system called Tradepad by December 1998, which would preempt TT's MD-Trader software patent. GL Trade claim that Tradepad used the vertical price axis, a dynamic display of bids and asks, aligned with the price axis and other items that GL Trade says...