On May 12, 2006, plaintiff was injured while working with a punch press. Components of the machine were manufactured by defendants, and on May 9, 2008, plaintiff filed a product-liability complaint against defendants in the circuit court of Cook County. The initial complaint identified plaintiff as “Juan Ortiz,” and it did not indicate whether he had ever been known by any other name. Plaintiff filed his first amended complaint on November 4, 2008, naming additional defendants that had been identified during discovery. The first amended complaint also named “Juan Ortiz” as the sole plaintiff.
During written discovery, plaintiff received at least three sets of interrogatories from various defendants. Among other information, each set of interrogatories asked plaintiff to disclose personal identification information, including his name, work history, and social security number. Plaintiff answered the interrogatories on February 25, 2009, identifying himself as “Juan Ortiz.” As required by section 1-109 of the Code of Civil Procedure . . . plaintiff signed and verified each interrogatory with the signature “Juan Ortiz.”
Defendants deposed plaintiff on May 19, 2009. When defendants asked plaintiff to state his full name, however, plaintiff responded that his name was Rogasciano Santiago, not Juan Ortiz. This was the first time during the course of litigation that plaintiff had used this name, and defendants had not previously been aware that plaintiff’s true name was not Juan Ortiz. The record does not disclose whether plaintiff’s attorney was aware of plaintiff’s true name.