2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/148123I address the phenomenology of CPT violation in the neutral kaon system under the assumption that it originates from Planck scale physics. This assumption opens the door to a new set of CPT violating parameters whose phenomenology is distinct from the $Δ$ parameter usually considered in the Hamiltonian. The origin of these parameters reflects a possible departure from a $S$-matrix evolution. Existing bounds on CPT violation are near the expected range based on naive dimensional analysis. This provides a strong incentive to pursue the quest of CPT violation in near-future kaon experiments. (Talk given at the Workshop on K Physics, Orsay, France, May 30 - June 4, 1996.)6 pages, uses LaTeX, typographical errors corrected and references addedHigh Energy Physics - Phenomenologytext