Fed. Circ. Revives E-Trading Patents In TD Ameritrade Case

Law360, New York (August 30, 2013, 4:42 PM EDT) -- The Federal Circuit on Friday reversed a lower court's ruling that four electronic trading patents asserted against TD Ameritrade Inc. and others are invalid, finding that the judge incorrectly relied on an earlier Federal Circuit ruling concerning different patents owned by the plaintiff.

While the lower court judge found that the patents owned by Trading Technologies International Inc. were invalid for lack of a written description, the Federal Circuit found that the earlier claim construction ruling on which that judge based her decision had no bearing...
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