The scope of the theft, and the value of the software to SAP, justifies an award of more than $1 billion in damages, he argued.

Attorney Bob Mittelstaedt, in his closing argument for SAP, shot back that Oracle was trying to trick the jury with phoney math.

"They're asking for far more than they're entitled to, and they're trying to trick you in order to get it," he told the jury.

SAP should have to pay no more than about $40 million in damages, Mittelstaedt said.

The great disparity between the companies' estimates reflects the different methods presented at trial to calculate the damages, and the jury will have to pick an amount based on whichever one it thinks is fair.