Amazon wins "one-click" purchasing patent appeal

Online retail giant Amazon won another round in the patent fight over its "one-click" purchasing system as an appeals court ruled that it did not infringe technology patented by Cordance Corp.

A lower court jury found that Amazon did not infringe two Cordance patents and that a third was invalid. But the judge in that court, the U.S. District Court for the District of Delaware, overturned the finding of invalidity. Both sides appealed to the U.S. Court of Appeals for the Federal Circuit, which ruled that Amazon was innocent of infringement. The appeals court ruled that Amazon did not infringe two of the Cordance patents and that portions of the third were invalid.