Jan. 25 (Bloomberg) -- Roche Holding AG’s diagnostics unit won an appeals court ruling that revives a patent-infringement case against Johnson & Johnson’s LifeScan unit and Nova Biomedical Corp. over glucose monitors.

The U.S. Court of Appeals for the Federal Circuit today said a judge should have considered the definition of a key term in the Roche patents for methods to determine the concentration of glucose in a blood sample. The court vacated a finding of non-infringement, and remanded the case for further proceedings.

To contact the reporter on this story: Susan Decker in Washington at sdecker1@bloomberg.net

To contact the editor responsible for this story: Michael Shepard at mshepard7@bloomberg.net