with sub as (
select '4260958M099PB6'         pass from dual union all
select '4260958m099pb6'         pass from dual union all
select '4260958m099pbf'         pass from dual union all
select '2260958m099pb7'         pass from dual union all
select '2a60958m099pb7'         pass from dual union all
select '4281084B011PB01'        pass from dual union all
select 'Буквы у тебя латинские' pass from dual union all
select 'v0850493m03vi'          pass from dual union all
select 'V0850493M03VI3'         pass from dual union all
select 'Коба - кличка Сталина'  pass from dual
  )
select s.*
from sub s
where length(pass) = 14
and translate(      substr(pass, 1, 7) || substr(pass, 9,  3) || substr(pass, 14, 1), 'x1234567890', 'x') is null
and translate(upper(substr(pass, 8, 1) || substr(pass, 12, 2)),  '1QWERTYUIOPASDFGHJKLZXCVBNM'     , '1') is null;

PASS
----------------------
4260958M099PB6
4260958m099pb6
2260958m099pb7