Samsung is planning to seek further review.
US District Judge, Lucy Koh, has cut about $450.5m from the $1.05bn in damages that Apple was awarded in a patent suit against Samsung Electronics in August 2012.
Last year, the nine-member US jury panel, which heard infringement claims and counter-claims by both the parties, revealed that Samsung infringed six of seven patents for mobile devices.
Koh said the jury had improperly calculated part of the award and ordered for a new trial in which damages will be reassessed.
The new trial will involve such devices as Samsung's Gem, Galaxy S II, Infuse 4G, Droid Charge, Galaxy Tab, Nexus S 4G, Prevail, Epic 4G as well as several other products.
Nam Ki Yung, a spokesman for Samsung,said "We are pleased that the court decided to strike $450,514,650 from the jury's award."
"Samsung intends to seek further review as to the remaining award," Ki Yung said.
Both firms have had several setbacks in their various legal trials in different countries.
Last week, a Tokyo court rejected Samsung's request to ban sales of Apple's iPhone and iPad in Japan.
Last month, the US Court of Appeals turned down Apple's request to fast-track its bid to ban several Samsung's phones.