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Former VP & Chief Advertising Counsel at AMEX, Po Yi, joins consumer protection, advertising & competition practice

Manatt, Phelps & Phillips, LLP, a multidisciplinary, integrated national professional services firm, announced today that Po Yi has joined the firm’s New York office as partner in the consumer protection, advertising & competition practice. With deep roots in advertising and marketing, Yi will further strengthen the firm’s advertising, entertainment and digital media knowledge base.

A former vice president at American Express from 2007-2013, Yi served as the chief advertising counsel to the company’s chief marketing officer and global advertising and brand management group. In that role, she advised on in-house marketing and advertising programs in social, digital and traditional media platforms while collaborating with American Express’ creative advertising team to develop branded campaigns. She was also responsible for negotiating and managing alliances with premier entertainment, sports, social media, and technology brands.

“Po has taken an entrepreneurial approach to building her career, both in-house and in private practice,” said William T. Quicksilver, Manatt’s chief executive officer and managing partner. “Her experience counseling major companies across disruptive industries will have an immediate, positive impact on our advertising, entertainment, and digital media practices. We welcome her to the team.”  

Prior to joining Manatt, Yi was a partner in Venable’s advertising and marketing group, where she focused her practice on advertising and marketing, branded entertainment, sponsorships, intellectual property, and digital media. She represented major companies in financial services, consumer products, retail, hospitality, sports, media & entertainment, and advertising industries.

“Manatt’s interdisciplinary approach to serving clients brings new energy to practicing law,” said Yi. “My clients are constantly innovating to keep pace with the rate of change in their industries, and the opportunity to collaborate alongside strategists, technologists and industry experts will only generate more powerful, forward-thinking business results.”

Yi earned her J.D. from Benjamin Cardozo School of Law and her B.A. in economics from Carleton College. She is recognized in The Best Lawyers in America for both advertising and entertainment, and is a frequent speaker at major industry conferences. 

About Manatt, Phelps & Phillips, LLP

Manatt, Phelps & Phillips, LLP, is one of the nation’s leading law and consulting firms, with offices strategically located in California (Los Angeles, Orange County, Silicon Valley, San Francisco and Sacramento), New York (New York City and Albany), Chicago and Washington, D.C. The firm represents a sophisticated client base—including Fortune 500, middle-market and emerging companies—across a range of practice areas and industry sectors. For more information, visit



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