John Maurice O’Quinn (September 4, 1941 – October 29, 2009) was a Texas trial lawyer and founding partner of The O’Quinn Law Firm (formerly known as O’Quinn & Laminack). His firm made its business handling plaintiff’s litigation, including representing clients suing breast implant manufacturers, medical facilities, and tobacco companies. In 2009, O’Quinn, along with his passenger, died in a single car crash in Houston, Texas. There were three class-action law firms, headed by John O’Quinn, pushing back against naked short selling. O’Quinn ‘s firm was one also representing Overstock.com in the Internet retailer’s suit against short seller Rocker Partners LP and research firm Gradient Analytics.