In addition to the Hardeman and Pilliod cases, a jury in San Francisco past year initially awarded a man, Dewayne Johnson, $289 million in a case related to non-Hodgkin's lymphoma and glyphosate-based products, but the judge later slashed the punitive damages levied against Bayer/Monsanto in that case to $39 million, down from $250 million (and left another $39 million in compensatory damages intact).
A federal jury in San Francisco previously ordered the weed killer maker to pay a man $80 million (NZ$121.7 million) and a San Francisco jury in August awarded $289 million (NZ$434 million) to a former greenskeeper, though a judge later reduced it.
The decision Monday marked the third defeat in court for Monsanto in California since August.
"Monsanto has never had any interest in finding out whether Roundup is safe", R Brent Wisner, one of the Pilliods' attorneys, said in a statement after the verdict.
Bayer announced last month that over 13,000 lawsuits related to the weedkiller had been launched in the US.
They filed their lawsuit in 2017 after being diagnosed with cancer in 2011 and 2015, respectively.
"The verdict in this trial has no impact on future cases and trials, as each one has its own factual and legal circumstances", the company said. Both of them are now in remission, but their trial had been expedited due to the risk of a relapse and potentially short life expectancy.
Shareholders have rebuked the company's top management over its handling of the Monsanto acquisition and the litigation it inherited, which has wiped around 30 billion euros ($33.68 billion) from Bayer's market value since the first jury verdict. "A number of Roundup cancer studies have confirmed that glyphosate exposure is a probable cause of non-Hodgkin lymphoma and other cancers".
The juries have repeatedly ruled that Roundup was defectively designed, that the company failed to warn consumers about the cancer risks, and that Monsanto has acted negligently.
The U.S. EPA, the European Chemicals Agency and other regulators have found that glyphosate is not likely carcinogenic to humans.
China hits back at USA with tariffs on $60bn of products
The fallout from an increase in tariffs on Chinese goods only slightly impacted oil markets on Monday morning in Asia. The broader market retreat indicated growing concern that talks between the United States and China could fall apart.