The 'Forgetting Sarah Marshall' star filed suit against Meridian Restaurant group on January 25 after investing USD 20,000 into the company's Hollywood Boulevard pub L'Scorpion in July 2005, court documents suggest, reported E! online.
The 32-year-old actress, who is preparing for litigation alongside four other investors in the bar, claims its owners failed to pay her an agreed five per cent of profits.
L'Scorpion, known for its 200 varieties of authentic Mexican tequilas, has generated USD 30,000 a month since opening in 2006, but the plaintiffs claim they did not receive their fair share.
Bell is pregnant with her first child and the 'House of Lies' starlet is rumoured to be expecting a baby boy this spring with her fiance Dax Shepard.