0000950123-04-005871 10-Q 3 20040331 20040506 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 10-Q 34 000-19034 04785073 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 10-Q 1 y96986e10vq.htm FORM 10-Q EX-31 2 y96986exv31.htm EXHIBIT 31-302 CERTIFICATION OF CEO AND CFO EX-32 3 y96986exv32.htm EXHIBIT 32-906 CERTIFICATION OF CEO AND CFO