C:\tmp\files>perl -nE"if ($x=(/PATTERN1/../PATTERN3/)) { @out=() if /PATTERN1/; push @out,$_; print @out if $x=~/E0$/ }" input2
PATTERN1 SOME INFO

TEXT4

TEXT5

TEXT6 PATTERN3 SOME INFO
PATTERN1 SOME INFO

TEXT4

TEXT5

TEXT6 PATTERN3 SOME INFO

C:\tmp\files>