Matt Knopp became a partner in 2000, Mike Wampold in 2004. Ann Rosato came on board in 2005. In 2007, Felix Luna, from the commercial side of law practice, joined as a partner, especially to try cases. In 2012, the firm name was changed from Peterson Young Putra to Peterson Wampold Rosato Luna Knopp. Leonard Feldman, an appellate specialist, was added to the firm in 2015. In 2017, the firm became Peterson Wampold Rosato Feldman Luna.
Early on, the firm began specializing in plaintiffs’ personal injury work, representing ordinary individuals in extraordinary struggles against other individuals, corporations, insurance companies, and the government. The firm has been willing to match resources with much bigger defendants. A high value lawsuit costs, tens, if not hundreds, of thousands of dollars for research, discovery and trial. A good deal of the firm’s work comes from other lawyers.