Leo Stoller

Who is Leo Stoller?

Leo D. Stoller is an American self-styled "intellectual property entrepreneur" based in suburban Chicago, Illinois. Stoller controversially claimed rights to a large inventory of "famous" trademarks and engaged in the assertive enforcement of those alleged trademark rights, threatening infringement action against people and companies who attempt to use similar marks.

Though he managed to obtain license payments in some circumstances through demand letters, Stoller lost some key challenges in federal court, and was sanctioned by United States regulators for filing thousands of motions. A federal court labeled Stoller and his companies as "vexatious litigants" in 2005, and his bankruptcy filing from that year was converted to a liquidation in 2006 after the judge found Stoller's filing to have been made in bad faith. On August 8, 2007, the bankruptcy court approved the sale of Stoller's trademark assets to the Society for the Prevention of Trademark Abuse, LLC.