I was not paid during my employment, can I invalidate a confidential informaion agreement.

I signed a confidential information and invention assignment agreement as an employee in my company ( I am also a shareholder). I am creating a new company on the same product, and my ex-partner wants to sue me for the breach of this contract. However, I was not paid during my contract and never receive any compensation of any sort.
The agreement says: "As a condition of my becoming employed (or my employment being continued) by XXXXXXXX, Inc., a Delaware corporation, or any of its current or future subsidiaries, affiliates, successors or assigns (collectively, the “Company”), and in consideration of my employment with the Company and my receipt of the compensation now and hereafter paid to me by the Company, the receipt of Confidential Information (as defined below) while associated with the Company, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, I hereby agree to the following"
Following this extract, there is a breach in the agreement as I was not paid nor compensated in any sort. Can my ex-partner actually sue me and win? Thanks