A US federal appeals court has rejected SAP’s bid to overturn a $345m patent infringement judgement awarded to Versata Software against it.

Versata filed a lawsuit against SAP in 2007, alleging that the German firm’s pricing software infringed a number of its patents.

In August 2009, Versata won a patent lawsuit against SAP America and its German-based parent company SAP AG, relating to the pricing technology, after jury imposed $138m fine.

According to the appeals court, before the second trial started, SAP attempted to eliminate any basis for future infringement and modified its products with a software patch.

The court said that the modification essentially prevented users from saving data into certain fields relating to hierarchical access.

"This court carefully considered the remainder of SAP’s arguments on infringement and finds no reversible error," the court said in its final ruling.

Reacting to court’s decision, SAP said it is reviewing the judgment and may consider all legal options, including appeal.