Tucson-based Raytheon Missile Systems has fired back at a lawsuit filed by a former development partner who alleges Raytheon stole its trade secrets involving a warhead for the Tomahawk cruise missile.

Ordnance Technologies North America Inc. had filed a federal lawsuit against Raytheon in May, seeking a court order halting Raytheon’s use of the bunker-busting warhead technology as well as unspecified monetary damages.

Raytheon has declined to comment publicly on the lawsuit.

But in an answer recently filed in court, Raytheon said that though the companies shared information, no proprietary information from La Jolla, Calif.-based Ordnance has been adapted to the latest version of the Tomahawk.

Raytheon said the design that Ordnance alleges was misappropriated “was independently designed by Raytheon,” and that purchase orders for designs from Ordnance gave Raytheon ownership of any intellectual property developed under the contracts.

“While Raytheon denies that it misappropriated anything from OTNA (Ordnance), the contracts between the parties establish that Raytheon owns that which it contracted to be developed on its behalf and that which it paid for,” Raytheon said in its answer.

Read the rest of this story Sunday in the print edition of the Arizona Daily Star.