Bayer on Monday said it filed a petition with the US Supreme Court to reverse court verdicts that awarded damages to a customer blaming his cancer on use of the German group’s glyphosate-based weedkillers.

Bayer last week lost a third appeal in lower courts against verdicts that sided with users of glyphosate-based Roundup, awarding them tens of millions of dollars in damages each, leaving the drugs and pesticides group to pin hopes for legal relief on the top US court.

Bayer asked the Supreme Court to review verdicts that went in favor of California resident and Roundup user Edwin Hardeman, a spokesman said.