Hundreds of lawsuits against seed company Syngenta could evolve into a major class-action and involve almost every corn farmer in the country, National Public Radio reports.

China rejected some American corn imports in 2013 because they contained the Viptera trait, produced by Syngenta, which had not yet been approved for sale in China.

Lawyers have filed many cases on behalf of farmers seeking compensation from Syngenta for lost sales. Many of those lawyers are asking the court to combine the cases into a class action, which could include “virtually every corn farmer in America,” according to court documents.

Syngenta denies any wrongdoing and in a statement said the lawsuits have no merit because the seed was approved for sale in the United States.