Moderna's stock falls the day after 'disappointing' patent ruling

Shares of Moderna Inc. MRNA, -8.74% were down 4.7% in premarket trading on Friday, the day after the U.S. Patent and Trademark Office ruled in favor of Arbutus Biopharma Corp. ABUS, 43.71% in a patent dispute between the companies. Shares of Arbutus rallied 15.9% on Friday before the market opened.