0000950123-04-003254 10-K 4 20031231 20040312 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 10-K 34 000-19034 04666199 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 10-K 1 y94850e10vk.htm REGENERON PHARMACEUTICALS, INC. EX-23.1 3 y94850exv23w1.htm CONSENT OF PRICEWATERHOUSECOOPERS LLP EX-31 4 y94850exv31.htm 302 CERTIFICATION OF CEO AND CFO EX-32 5 y94850exv32.htm 906 CERTIFICATION OF CEO AND CFO