The Military Order of the Purple Heart’s fundraising organization is suing Detroit nonprofit Others First Inc. for using its trademarked phrase “Purple Heart” to promote an unaffiliated car donation program.

Military Order of the Purple Heart Service Foundation Inc. filed the case on May 16 in the District of Maryland. The foundation, whose members are Purple Heart medal recipients, raises money for charitable programs. It funds programs that benefit veterans and their dependents and unrelated charities, and it registered the “Purple Heart” mark for charitable fundraising services, which include a car donation program.