Possibilities for testing Lorentz symmetry using precision experiments with
antiprotons in Penning traps and with antihydrogen spectroscopy are reviewed.
Estimates of bounds on relevant coefficients for Lorentz violation in the
Standard-Model Extension (SME) are considered.Comment: 8pp, proceedings of invited talk at 8th International Conf. on Low
Energy Antiproton Physics (LEAP '05), Bonn, Germany, May 200