India's Leander Paes and his doubles partner Czech Republic's Radek Stepanek defeated Jan-Lennard Struff and Dominic Thiem 6-1, 6-7(3), 10-5 to enter the quarter-finals of BMW Open here on Wednesday.
The Indian-Czech pair next face Alexander Peya and Bruno Soares in the last-eight encounter to book a place in the semi-finals.
