Lenovo acquired IBM's PC division in 2004 for $1.75 billion, gaining the ThinkPad brand. It aimed to build its Lenovo master brand while leveraging ThinkPad's brand equity. Lenovo planned a three-phase advertising campaign using ThinkPad initially to maintain sales momentum before promoting Lenovo and innovation. It also launched new 3000 series PCs targeted at small businesses. However, Lenovo faced challenges including an inability to use the IBM logo, falling PC prices, and smaller advertising budgets than competitors that impacted its market share.