0001171843-07-000754 6-K 1 20071220 20071221 20071220 RESEARCH IN MOTION LTD 0001070235 3661 000000000 0228 6-K 34 000-29898 071320311 295 PHILLIP ST WATERLOO ONTARIO CANADA A6 00000 5198887465 295 PHILLIP STREET WATERLOO, ONTARIO N2L 3W8 ONTARIO A6 N2L 3W8 6-K 1 f6k122007.htm FORM 6-K