USPTO relaxes requirement on structural similarity for Markush group
On Aug. 25, USPTO designated a PTAB decision in Ex parte Chowdhury (Appeal No. 2025-002261) issued in February as informative. The decision concerns the Board’s reversal of an Examiner’s rejection of claims based on improper inclusion of structurally diverse microRNAs (miRNAs) in a Markush group. The patent application