Halozyme Sues Merck for Patent Infringement over Subcutaneous Keytruda Formulation

Complaint filed in New Jersey alleges Merck uses Halozyme's patented MDASE technology to develop SC Keytruda Halozyme is seeking damages and injunctive relief to stop the infringement SAN DIEGO, April 24, 2025 /PRNewswire/ -- Halozyme Therapeutics, Inc. (NASDAQ: HALO) (Halozyme), a biotechnology company that pioneered the use of human hyaluronidase for subcutaneous drug delivery, today filed a patent infringement lawsuit against Merck Sharp & Dohme Corp. (Merck) in U.S. District Court in New Jersey. Halozym ...