Duffy & Partners Managing Director Tricia Davidson has resigned to pursue new opportunities elsewhere, the branding and design firm said Wednesday. Davidson helped lead the spinoff of Duffy from Minneapolis-based Fallon in 2001 and worked for the company ever since. Prior to that, she spent 11 years at Fallon. “Tricia’s contributions have been invaluable as we successfully transitioned our firm from a subsidiary to an independent design firm with global clients,” Duffy & Partners Creative…