Guardant Health stock tumbled Monday after losing a patent battle against privately held TwinStrand Biosciences.

TwinStrand Biosciences Announces Final Judgment in Patent Infringement Suit Against Guardant Health, Awarding TwinStrand and the University of Washington More Than $245.2 Million…

Guardant Health stock tumbled Monday after losing a patent battle against privately held TwinStrand Biosciences.