Testing kappa-Poincare with neutral kaons

In recent work on experimental tests of quantum-gravity-motivated phenomeno logical models, a significant role has been played by the so-called "kappa" deformations of Poincare symmetries. Sensitivity to values of the relevant deformation length lambda as small as 5 x 10(-33) m has been achieved in r ecent analyses comparing the structure of kappa -Poincare symmetries with d ata on the gamma rays we detect from distant astrophysical sources. We inve stigate violations of CPT symmetry which may be associated with kappa -Poin care in the physics of the neutral-kaon system. A simple estimate indicates that experiments on the neutral kaons may actually be more lambda -sensiti ve than the corresponding astrophysical experiments, and may already allow to probe values of lambda of order the Planck length.