Keytruda Qlex™ Updates: PTAB Finds Four Additional Halozyme PH20 Patents Unpatentable and Halozyme Appeals Prior FWDs

On September 25, 2026, the Patent Trial and Appeal Board (“PTAB”) issued Final Written Decisions (“FWD”) in PGR2025-00033 and PGR2025-00039 finding all remaining challenged claims of Halozyme’s U.S. Patent Nos. 12,049,652 (“the ’652 patent”) and 12,104,185 (“the ’185 patent”) unpatentable….
By: Venable LLP