A September trial date has been set for a Chinese brother and sister charged with trying to steal patented corn seeds from Iowa test fields.

Mo Hailong and Mo Yun are scheduled to face trial for conspiring to steal trade secrets on Sept. 14, 2015, according to court records, as reported by the Des Moines Register. The brother and sister are amongst a group of seven Chinese citizens facing charges stemming from the investigation. The trial stems from 2013 charges.

The trial is to include the brother and sister under one court trial. A motion to separate the trials was denied, and many more pretrial motions are anticipated. 

"A September trial setting is most realistic and appropriate considering the vast quantity of discovery already disclosed, the strong likelihood of numerous complicated pretrial motions, required rulings and the overall nature of this case," wrote U.S. District Judge Robert Pratt in a ruling.

The Register reported the background to the trial: “A complaint filed in Dec. 2013 claims Mo Yun helped coordinate the seed-stealing plot with her brother between 2007 and 2008. At the time, she worked in research project management for a Chinese company called the DBN Group. Mo Yun is married to Dr. Shao Genhuo, the company's CEO.”

The two are not being let out of the country even though motions have been filed for temporary returns to China. The Chinese government’s interest in the trial has not been overly publicized.