I Destroyed Billion Empire after Divorce

The system the husband's company sells runs on patents held in the architect's own name, under a license she can withdraw. The marriage between them has been secret for three years, and in that time she has built his company into one worth billions. At the launch of the new project he presents her work as his lover's achievement, humiliates the architect in front of the guests, and has her thrown out. She divorces him at once and withdraws the patent license, and the system he has just launched becomes electronic scrap. She then takes up two identities she had set aside: heiress to her own family's fortune, and the architect who works under the name Zero. A penalty clause puts the company on the hook for a sum running into the billions. She also digs into the lover's background and finds that the woman is a fraud.