"We were finally allowed to show a jury the mountain of evidence showing Monsanto's manipulation of science, the media and regulatory agencies to forward their own agenda despite Roundup's severe harm to the animal kingdom and humankind", he said in a statement.
"The jury saw for themselves internal company documents demonstrating that, from day one, Monsanto has never had any interest in finding out whether Roundup is safe", an attorney for the couple, R. Brent Wisner, said in a statement sent to CBS News.
This is the third verdict against Monsanto in Roundup cases and the biggest so far. Jurors awarded them each $1 billion in punitive damages in addition to a combined $55 million in compensatory damages.
A jury in Oakland ruled Monday that Monsanto, now owned by the German pharmaceutical corporation Bayer, was liable for the non-Hodgkin's lymphoma (NHL) cancer of Alva and Alberta Pilliod.More news: China Responds to Trump's New Tariffs, Targeting $60 Billion in US Exports
The trials were the first of an estimated 13,000 lawsuits against Monsanto.
The next jury trial in the glyphosate litigation is scheduled for August in Missouri state court, the first time a jury outside of California will hear a Roundup case. A spokesman called the jury's decision "excessive and unjustifiable". Bayer also points to several regulators around the world that found that glyphosate was not carcinogenic to humans.
The Alameda County Superior Court jury deliberated for less than two days before reaching a verdict. A judge later reduced the award by $200 million. In March, a federal jury in San Francisco granted $80 million to Edwin Hardeman of Santa Rosa.
The company said it will appeal.More news: Legendary actress and singer Doris Day dead at 97
"There is zero chance it will stand", said University of California, Hastings School of Law professor David Levine.
Chairman Werner Wenning told shareholders at Bayer's annual general meeting last month that company leaders "very much regret" falls in its share price.
The Pilliods, a California couple in their 70s, allege the regular use of Roundup on their property between 1975 and 2011 caused them to develop cancers of the lymph system. They are both in remission. The company insists the glyphosate-based product is not linked to cancer. Bayer denies those allegations. "A number of Roundup cancer studies have confirmed that glyphosate exposure is a probable cause of non-Hodgkin lymphoma and other cancers".
The EPA reaffirmed its position in April, saying that the active ingredient glyphosate found in the weed killer posed "no risks of concern" for people exposed to it by any means.More news: 'Empire' will go 1 more season, Smollett's future is unclear