RELATED APPLICATIONSThis application is a national stage entry under 35 U.S.C. .sctn. 371 of PCT/IN03/00043, filed Mar., 3, 2003.FIELD OF THE INVENTIONThe present invention relates to novel polymorphic forms of quetiapine fumarate, processes for their preparation and pharmaceutical compositions containing them.BACKGROUND OF THE INVENTION2-[2-(4-Dibenzo[b,f]-[1,4]thiazepin-11-yl-1-piperazinyl)ethox