Katrina Burchell, the former head of Unilever's trade mark team has joined UK firm Irwin Mitchell. Burchell began her career in trade marks at Allied Lyons before moving to ICI and Wildbore & Gibbons. She joined Unilever in 1997 where she became head of the global trade mark team. She notably oversaw the outsourcing of the administration of Unilever's 160,000 trade marks – the world's largest trade mark portfolio – to Baker & McKenzie in 2007. In 2012 Burchell joined French luxury goods company PPR as group IP director, splitting her time between Paris and London and managing a portfolio that includes Gucci and Yves Saint Laurent.