In denying Monsanto's request for a new trial, San Francisco Superior Court Judge Suzanne Bolanos cut the jury's punitive damage award from $250 million to $39 million. The judge had earlier said she had strong doubts about the jury's entire punitive damage award.

Bolanos gave DeWayne Johnson until Dec. 7 to accept the reduced amount or demand a new trial.

Johnson's spokeswoman Diana McKinley said he and his lawyers are reviewing the decision and haven't decided the next step. "Although we believe a reduction in punitive damages was unwarranted and we are weighing the options, we are pleased the court did not disturb the verdict," she said.

Monsanto spokesman Daniel Childs said that the company was pleased with the reduced reward but still planned to appeal the verdict. Childs said there's no scientific proof linking Roundup to cancer.

The jury awarded punitive damages after it found that the St. Louis-based agribusiness had purposely ignored warnings and evidence that its popular Roundup product causes cancer, including Johnson's lymphoma.

Punitive damages are designed to punish companies that juries determine have purposely misbehaved and to deter others from operating similarly.

In a tentative ruling on Oct. 11, Bolanos said it appeared the jurors overreached with their punitive damages award. She said then that she was considering wiping out the $250 million judgment after finding no compelling evidence presented at trial that Monsanto employees ignored evidence that the weed killer caused cancer.