DES MOINES, Iowa (AP) – An Iowa planter and grain cart manufacturer is asking a federal judge to protect it from having to turn over sensitive internal documents in an antitrust lawsuit in which it’s not directly involved.

The Des Moines Register reports that Kinze Manufacturing, of Williamsburg, Iowa, filed motions Thursday in the government’s lawsuit intended to block a deal between farm equipment maker John Deere and seed giant Monsanto. Kinze says John Deere is trying to access a wide variety of internal documents about Kinze’s business, including marketing strategies, sales data and research and development plans. John Deere served the Iowa company a subpoena last month seeking the documents.

Kinze argues those documents would divulge its most tightly held business secrets and irreparably affect its ability to compete with Deere.