Yum! Brands Shareholder Alert: Briscoe Law and Powers Taylor Investigate Possible Breaches of Fiduciary Duty by … Former United States Securities and Exchange Commission attorney Willie Briscoe, founder of The Briscoe Law Firm, PLLC, and the securities litigation firm of Powers Taylor, LLP announce that a federal class action lawsuit has been filed against Yum! Brands, Inc. [News Source]