How long for epilepsy remission in the ILAE definition?

RS Fisher, C Acevedo, A Arzimanoglou, A Bogacz, JH Cross, CE Elger, J Engel, L Forsgren, JA French, DC Hesdorffer, BI Lee, GW Mathern, SL Moshe, E Perucca, IE Scheffer, T Tomson, M Watanabe, S Wiebe