0000950123-04-014749 10-K/A 5 20031231 20041214 20041214 REGENERON PHARMACEUTICALS INC 0000872589 2834 133444607 NY 1231 10-K/A 34 000-19034 041200169 777 OLD SAW MILL RIVER RD TARRYTOWN NY 10591-6707 9143477000 10-K/A 1 y69484e10vkza.htm AMENDMENT NO. 2 TO FORM 10-K EX-23.1 2 y69484exv23w1.htm EX-23.1: CONSENT OF PRICEWATERHOUSECOOPERS LLP EX-23.2 3 y69484exv23w2.htm EX-23.2: CONSENT OF ERNST & YOUNG LLP EX-31 4 y69484exv31.htm EX-31: CERTIFICATIONS EX-32 5 y69484exv32.htm EX-32: CERTIFICATIONS