The new lawsuit comes just months after the two reportedly reached an agreement on the harassment and stalking charges she brought against him after he was arrested in January for allegedly threatening the reality star at their young daughter's school.
Frankel and Hoppy, both 47, announced they were parting ways in December 2012 after three years of marriage and months of speculation they were on the rocks.
The creator of SkinnyGirl has always spoken openly about her bitter divorce, telling PEOPLE it had gone on 'way too long.'
'I feel like I’m on the 18th hole of the golf round now. I feel like we’re here,' she said at the time. 'I feel like I survived something. When it all shakes down, I’ll be a woman who has not kind of just felt backed into a corner. I stayed strong and I did what was best for myself, my daughter, for women.'
Frankel was even brought to tears on an episode of RHONY when discussing her divorce.
'I don’t know why I’m being punished this way,' she said. 'My custody situation is over, my financial settlement is over, my apartment is sold, and yet I sometimes feel hopeless. And I sometimes feel like my ex is untouchable and I’m not going to be able to get out of this.'