The 6th U.S. Circuit Court of Appeals revived a False Claims Act complaint that alleged a federal contractor used “falsely inflated labor cost estimates” to dupe the National Aeronautics and Space Administration into awarding fixed-price contracts for facilities maintenance projects.Concurring with a separate opinion, “because the parties seem to have overlooked common-law principles that may provide important guidance” on remand, Circuit Judge Eric Earl Murphy reviewed the distinct standards &mdash …