Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 15, 2013 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in Regeneron Pharmaceuticals, Inc.’s Annual Report on Form10-K for the year ended December 31, 2012. We also consent to the reference to us under the heading “Experts” in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Florham Park, NJ
November 5, 2013
