Quote from JackR:
The ruling cited in the links above were all dated in Spring, 2007. They referenced Federal District Court rulings. Perhaps there has been a recent ruling issued by a federal appelate court that modified the lower court's decision. If so, TT may have started threatening/suing again.
Jack
Trading Technologies Sues Cunningham Trading Systems and Interactive Brokers
Some of the patents relate to its MD Trader product, the order-entry screen incorporated in its X_Trader software.
By Melanie Rodier More from this author
FEBRUARY 05, 2010
Trading Technologies (TT), the world's largest technology provider for futures trading, has filed patent infringement suits against Cunningham Trading Systems and Interactive Brokers.
In addition, the firm has filed patent claims against SunGard/GL Trade, Futurepath Trading, BGC Partners and CQG.
Patents relate to its MD Trader product, the order-entry screen incorporated in its X_Trader software, as well as to other features.
Chicago-based TT previously filed around 15 lawsuits against brokerages and trading firms over patent infringements that occurred in 2004.
Most brokerages and vendors settled out of court, although eSpeed was ordered by a court to pay its rival $3.5 million in damages in 2007.
This figure was reached by multiplying the number of trades eSpeed made over a period of four or five months by 25 cents.
I guess TT musta won the case.