SEC Comment Letter for REGENERON PHARMACEUTICALS, INC. (REGN) (CIK 0000872589) (REGN) — Aug 25, 2009

REGENERON PHARMACEUTICALS, INC. (REGN) (CIK 0000872589)
Date: Aug. 25, 2009 · CIK: 0000872589 · Accession: 0000000000-09-046659

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AI Filing Summary & Sentiment

File numbers found in text: 000-19034

Date

August 25, 2009

Author

Jeffrey Riedler, Assistant Director

Form

UPLOAD

Company

REGENERON PHARMACEUTICALS, INC. (REGN) (CIK 0000872589)

Letter

Via Facsimile and U.S. Mail Mail Stop 4720 August 25, 2009 Leonard S. Schleifer, M.D., Ph.D. Chief Executive Officer Regeneron Pharmaceuticals, Inc. 777 Old Saw Mill River Road Tarrytown, New York 10591-6707 Re: Regeneron Pharmaceuticals, Inc. Form 10-K for the Fiscal Year Ended December 31, 2008 Filed February 26, 2009 File Number 000-19034

Dear Dr. Schleifer:

We have completed our review of your Fo rm 10-K and related filings and have no further comments at this time.

Sincerely,
Jeffrey Riedler, Assistant Director

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Via Facsimile and U.S. Mail Mail Stop 4720                                                                                                   August 25, 2009  Leonard S. Schleifer, M.D., Ph.D.    Chief Executive Officer    Regeneron Pharmaceuticals, Inc. 777 Old Saw Mill River Road Tarrytown, New York 10591-6707
Re: Regeneron Pharmaceuticals, Inc.
Form 10-K for the Fiscal Year Ended December 31, 2008 Filed February 26, 2009 File Number 000-19034

Dear Dr. Schleifer:

We have completed our review of your Fo rm 10-K and related filings and have no
further comments at this time.

Sincerely,

  Jeffrey Riedler,  Assistant Director

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