McDermott Will & Emery·IP / PATENT
PTAB: Interchangeable function sufficient for proper Markush group
The Patent Trial & Appeal Board has clarified that structurally distinct microRNAs can form a proper Markush group when interchangeable as markers for the claimed invention.
markush-groupsptab-decisionpatent-prosecutionmirna-biotechpatent-appeals
Read the original firm alert → Friday, September 11, 2026