DIRECT DIAL: 212.451.2252

EMAIL: KSCHLESINGER@OLSHANLAW.COM

July 20, 2011

United States Securities and Exchange Commission

Division of Corporate Finance

100 F. Street, N.E.

Washington, D.C. 20549

Attention:  Patrick Gilmore

Re: FalconStor Software, Inc.

Form 10-K for the Fiscal Year Ended December 31, 2010

Filed March 14, 2011

Form 10-Q for the Quarterly Period Ended March 31, 2011

Filed May 10, 2011

File No. 000-23970

Dear Mr. Gilmore:

Per our discussions, on behalf of FalconStor Software, Inc. (the “Company”),  the Company hereby requests an extension to respond to the staff’s letter dated July 7, 2011 relating to the above-referenced filings from July 21, 2011 to August 4, 2011.  If you have any questions relating to the foregoing, please contact Steven Wolosky at 212-451-2333 or Kenneth Schlesinger at 212-451-2252.

Very truly yours,

/s/ Kenneth A. Schlesinger

Kenneth A. Schlesinger

cc: Mr. James Weber

Seth Horowitz, Esq.

Steven Wolosky, Esq.