0000950123-04-014750 S-3 4 20041214 20041214 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 S-3 33 333-121225 041200174 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 S-3 1 y69426sv3.htm REGENERON PHARMACEUTICALS, INC. EX-12.1 2 y69426exv12w1.txt STATEMENT RE: COMPUTATION OF RATIOS OF EARNINGS TO COMBINED FIXED CHARGES EX-23.1 3 y69426exv23w1.txt CONSENT OF PRICEWATERHOUSECOOPERS LLP EX-23.2 4 y69426exv23w2.txt CONSENT OF ERNST & YOUNG LLP