Sorry, I think i misunderstood your question. You want to pattern a pattern.
Group the pattern [Feature > Group > Local Group (enter a name)], then select the pattern. Then from the Group menu, select Pattern, and pattern the new group that you just made. Use the dimensions from the first pattern.
to pattern a patterned group do one thing make this pattern as a group and now go to group pattern and pattern this group.u can do this i have done it in patterning holes. i made a hole patterened it lenierly and made it as a group and then patterened this group radilly.