HP Pavilion is a line of personal computers produced by Hewlett-Packard and introduced in 1995. The Pavilion competes with Acer Aspire, Dell Inspiron and Toshiba Satellite. The name is applied to both desktops and laptops for the Home and Home Office product range.
When HP merged with Compaq in 2002, it took over Compaq's existing naming rights agreement. As a result, HP sells both HP and Compaq-branded machines.(Wikipedia)