TAT is a mobile user interface company, licensing software to improve the user experience and development process of user interfaces for mobile phones and other devices. TAT was founded in 2002 by Mikael Tellhed (formerly Persson), Paul Blomdahl, Per Grimberg (formerly Gustafsson), Ludvig Linge, Karl-Anders Johansson, and Hampus Jakobsson. TAT was acquired by RIM in December 2010.