An opinion in the case came on Monday as Syngenta and its parent company, Swiss-based Syngenta AG (>> Syngenta AG), have become the target of lawsuits over the same variety of corn, Agrisure Viptera.

A three-judge panel of the U.S. 8th Circuit Court of Appeals ordered a district court to review whether Syngenta had standing to bring a claim of false advertising against Bunge in 2011 after Bunge began refusing to accept Viptera corn because it was not approved for imports by China.

Syngenta sued Bunge over the decision, and a district court in 2012 ruled in Bunge's favour.

The appeals court sent Syngenta's false-advertising claim back to the lower court for review, while affirming the lower court's rulings in favour of Bunge on two other claims.

Viptera corn has become controversial because China last year began rejecting boatloads of U.S. corn containing the trait, known as MIR 162. Commodities trader Cargill Inc [CARG.UL] and farmers have separately sued Syngenta, claiming they lost money from the trade disruptions.

Bunge expects to prevail on the false advertising claim in district court, spokeswoman Deb Seidel said, adding that Monday's opinion was a clarification of a ruling the appeals court made in August.

Syngenta declined to comment.

The original case was Syngenta Seeds Inc v. Bunge North America, U.S. District Court, Northern District of Iowa, No. 11-cv-04074.

(Reporting by Tom Polansek, editing by G Crosse)

By Tom Polansek

Stocks treated in this article : Bunge Ltd, Syngenta AG