I dunno if this fits your case, but I often prefer, in such cases, to start by removing the cases that I do not want using for example two regexes: 
while (<DATA>) {
    next if /in\s*$/;
    print "$1.$2\n" if /^\s*Pin:\s+(\w+)\.(\w+)/;
}

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In reply to Re: Help with a regex by Laurent_R
in thread Help with a regex by mavericknik

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