A Delaware federal judge has upheld a $4.1 million jury verdict in favor of a Houston-based engineering startup in a breach-of-contract suit over technology for a spacecraft and lunar lander vehicle capable of transporting experiments from the International Space Station.

U.S. District Chief Judge Leonard P. Stark of the District of Delaware on Monday declined to roll back the Jan. 12 verdict, which awarded Intuitive Machines cash and equity in Moon Express Inc. as a result of Moon Express’ failure to complete work on the software underpinning its project.