What type of law firm is central to the plot of "Suits"?

The type of law firm central to the plot of "Suits" is a corporate law firm. The show primarily revolves around Harvey Specter, a senior partner at the fictional law firm Pearson Hardman (later Pearson Specter and Pearson Specter Litt), and his associate Mike Ross, who starts working at the firm despite never having attended law school. The show focuses on Harvey and Mike managing to close cases while maintaining Mike's secret.