Document:

<PAGE>

                                                                    EXHIBIT 10.9

                           PATENT SECURITY AGREEMENT

            Patent Security Agreement, dated as of July 28, 2005 (as amended,
restated or otherwise modified from time to time, the "Patent Security
Agreement"), between MediaDefender, Inc., a Delaware corporation ("Grantor") and
U.S. Bank National Association, in its capacity as collateral agent for the
Initial Purchasers and all other Holders of the Securities (together with its
successors and assigns in such capacity, the "Collateral Agent").

                             PRELIMINARY STATEMENTS

            WHEREAS, Grantor is a party to a Security Agreement dated as of even
date herewith (as amended, restated or otherwise modified from time to time, the
"Security Agreement") between Grantor and the other grantors party thereto and
the Collateral Agent, as well as certain other Transaction Documents as
described in that certain Note and Warrant Purchase Agreement dated as of even
date herewith (as amended, restated or otherwise modified from time to time, the
"Note and Warrant Purchase Agreement") by and among Company, the investors
listed on the signature pages thereto and the Collateral Agent pursuant to which
Grantor is required to execute and deliver the Security Agreement and this
Patent Security Agreement.

            NOW, THEREFORE, in consideration of the promises contained therein
and to induce the Initial Purchasers to enter into the Transaction Documents,
Grantor hereby agrees with the Collateral Agent, as follows:

            Section 1. Defined Terms. Unless otherwise defined herein, terms
defined in the Security Agreement and used herein have the meaning given to them
in the Security Agreement.

            Section 2. Grant of Security Interest in Patent Collateral. Grantor
hereby pledges and grants to Collateral Agent, for the benefit of the Initial
Purchasers and Holders of the Securities, a security interest in all of
Grantor's right, title and interest in, to and under the following, whether
presently existing or hereafter created or acquired (collectively, the "Patent
Collateral"):

            (a) all United States and foreign patents and certificates of
invention, or similar industrial property rights, and applications for any of
the foregoing (collectively, "Patents"), including, but not limited to: (i) each
patent and patent application referred to on Schedule I hereto (as such schedule
may be amended or supplemented from time to time), (ii) all reissues, divisions,
continuations, continuations-in-part, extensions, renewals, and reexaminations
thereof, (iii) all rights corresponding thereto throughout the world, (iv) all
inventions and improvements described therein, (v) all rights to sue for past,
present and future infringements thereof, (vi) all licenses, claims, damages,
and proceeds of suit arising therefrom, and (vii) all Proceeds of the foregoing,
including,

                                       1
<PAGE>

without limitation, licenses, royalties, income, payments, claims, damages, and
proceeds of suit.

            (b) all agreements providing for the granting of any right in or to
Patents (whether Grantor is licensee or licensor thereunder) including those
referred to on Schedule I hereto (collectively, "Patent Licenses");

            (c) all reissues, divisions, continuations, continuations-in-part,
extensions, renewals, and reexaminations thereof;

            (d) all rights corresponding thereto throughout the world;

            (e) all inventions and improvements described therein;

            (f) all rights to sue for past, present and future infringements
thereof;

            (g) all licenses, claims, damages, and proceeds of suit arising
therefrom; and

            (h) all Proceeds of the foregoing, including, without limitation,
licenses, royalties, income, payments, claims, damages, and proceeds of suit.

            Section 3. Security Agreement. The security interest granted
pursuant to this Patent Security Agreement is granted in conjunction with the
security interest granted to the Collateral Agent for the Initial Purchasers and
Holders of the Securities pursuant to the Security Agreement and Grantor hereby
acknowledges and affirms that the rights and remedies of the Collateral Agent
with respect to the security interest in the Patents made and granted hereby are
more fully set forth in the Security Agreement and the other Transaction
Documents, the terms and provisions of which are incorporated by reference
herein as if fully set forth herein. In the event that any provision of this
Patent Security Agreement is deemed to conflict with the Security Agreement, the
provisions of the Security Agreement shall control.

            Section 4. Applicable Law. This Patent Security Agreement and the
rights and obligations of the parties hereunder shall be governed by, and shall
be construed and enforced in accordance with, the laws of the State of New York,
without regard to its conflicts of law provisions (other than Section 5-1401 and
Section 5-1402 of the New York General Obligation Laws).

            Section 5. Counterparts. This Agreement may be executed in any
number of counterparts, each of which when so executed and delivered shall be
deemed an original, but all such counterparts together shall constitute but one
and the same instrument.

                  [Remainder of page intentionally left blank]

                                       2
<PAGE>

            IN WITNESS WHEREOF, Grantor has caused this Patent Security
Agreement to be executed and delivered by its duly authorized officer as of the
date first set forth above.

                                     MEDIADEFENDER, INC., a Delaware corporation

                                     By: /s/ Octavio Herrera
                                         -----------------------------
                                         Name: Octavio Herrera
                                         Title: Secretary

                           [Patent Security Agreement]

<PAGE>

Accepted and Agreed:

U.S. BANK NATIONAL ASSOCIATION
as Collateral Agent

By: /s/ Brad E. Scarbrough
    --------------------------------
    Name: Brad E. Scarbrough
    Title: Vice President

                           [Patent Security Agreement]

<PAGE>

                                   SCHEDULE I
                                       TO
                            PATENT SECURITY AGREEMENT

                      PATENT REGISTRATIONS AND APPLICATIONS

<TABLE>
<CAPTION>
APPLICATION NO.   PATENT NO.                      TITLE                      OWNER
---------------   ----------   -------------------------------------   -------------------
<S>               <C>          <C>                                     <C>
  10/371,513       PENDING     COMPUTER NETWORK FILE SYNCHRONIZATION   MEDIADEFENDER, INC.
                                         SYSTEM AND METHOD
</TABLE><PAGE>

                                                                   EXHIBIT 10.10

                          TRADEMARK SECURITY AGREEMENT

            Trademark Security Agreement, dated as of July 28, 2005 (as amended,
restated or otherwise modified from time to time, the "Trademark Security
Agreement"), between ARTISTDirect, Inc. a Delaware corporation ("Grantor") and
U.S. Bank National Association, in its capacity as collateral agent for the
Initial Purchasers and all other Holders of the Securities (together with its
successors and assigns in such capacity, the "Collateral Agent").

                              PRELIMINARY STATEMENT

            WHEREAS, Grantor is a party to a Security Agreement dated as of even
date herewith (as amended, restated or otherwise modified from time to time, the
"Security Agreement") between Grantor and the other grantors party thereto and
the Collateral Agent, as well as certain other Transaction Documents as
described in that certain Note and Warrant Purchase Agreement dated as of even
date herewith (as amended, restated or otherwise modified from time to time, the
"Note and Warrant Purchase Agreement") by and among Company, the investors
listed on the signature pages thereto and the Collateral Agent pursuant to which
Grantor is required to execute and deliver the Security Agreement and this
Trademark Security Agreement.

            NOW, THEREFORE, in consideration of the promises contained therein
and to induce the Initial Purchasers to enter into the Transaction Documents,
Grantor hereby agrees with the Collateral Agent, as follows:

            Section 1. Defined Terms. Unless otherwise defined herein, terms
defined in the Security Agreement and used herein have the meaning given to them
in the Security Agreement.

            Section 2. Grant of Security Interest in Trademark Collateral.
Grantor hereby pledges and grants to Collateral Agent, for the benefit of the
Initial Purchasers and Holders of the Securities, a security interest in all of
Grantor's right, title and interest in, to and under the following, whether
presently existing or hereafter created or acquired (collectively, the
"Trademark Collateral"):

            (a) all United States federal and state trademarks, foreign
trademarks, trade names, corporate names, company names, business names,
fictitious business names, Internet domain names, service marks, certifications
marks, collective marks, logos, other source or business identifiers, designs
and general intangibles of a like nature, all registrations and applications for
any of the foregoing, including the registrations and applications referred to
on Schedule I hereto (collectively, "Trademarks");

            (b) any and all agreements providing for the granting of any right
in or to Trademarks (whether Grantor is licensee or licensor thereunder)
including those referred to on Schedule I hereto (collectively, "Trademark
Licenses");

                                       1
<PAGE>

            (c) all extensions or renewals of the foregoing;

            (d) all goodwill of the business connected with the use of, and
symbolized by, each Trademark and each Trademark License;

            (e) the right to sue for past, present and future infringement or
dilution of any of the foregoing or for any injury to goodwill; and

            (f) all Proceeds of the foregoing, including, without limitation,
licenses, royalties, income, payments, claims, damages, and proceeds of suit.

            Section 3. Security Agreement. The security interest granted
pursuant to this Trademark Security Agreement is granted in conjunction with the
security interest granted to the Collateral Agent for the Initial Purchasers and
Holders of the Securities pursuant to the Security Agreement and Grantor hereby
acknowledges and affirms that the rights and remedies of the Collateral Agent
with respect to the security interest in the Trademarks made and granted hereby
are more fully set forth in the Security Agreement and the other Transaction
Documents, the terms and provisions of which are incorporated by reference
herein as if fully set forth herein. In the event that any provision of this
Trademark Security Agreement is deemed to conflict with the Security Agreement,
the provisions of the Security Agreement shall control.

            Section 4. Applicable Law. This Trademark Security Agreement and the
rights and obligations of the parties hereunder shall be governed by, and shall
be construed and enforced in accordance with, the laws of the State of New York,
without regard to its conflicts of law provisions (other than Section 5-1401 and
Section 5-1402 of the New York General Obligation Laws).

            Section 5. Counterparts. This Agreement may be executed in any
number of counterparts, each of which when so executed and delivered shall be
deemed an original, but all such counterparts together shall constitute but one
and the same instrument.

                  [Remainder of page intentionally left blank]

                                       2
<PAGE>

            IN WITNESS WHEREOF, Grantor has caused this Trademark Security
Agreement to be executed and delivered by its duly authorized officer as of the
date first set forth above.

                                         ARTISTDIRECT, INC., a Delaware
                                         corporation

                                         By: /s/ Robert N. Weingarten
                                             -----------------------------
                                             Name: Robert N. Weingarten
                                             Title: Chief Financial Officer

                         [Trademark Security Agreement]

<PAGE>

Accepted and Agreed:

U.S. BANK NATIONAL ASSOCIATION
as Collateral Agent

By: /s/ Brad E. Scarbrough
    -----------------------------
    Name:  Brad E. Scarbrough
    Title: Vice President

                         [Trademark Security Agreement]

<PAGE>

                                   SCHEDULE I
                                       TO
                          TRADEMARK SECURITY AGREEMENT

                    TRADEMARK REGISTRATIONS AND APPLICATIONS

Federal Trademark Filings

<TABLE>
<CAPTION>
           MARK               APPL. NO.    APPL. DATE    REG. NO.    REG. DATE           OWNER
--------------------------    ---------    ----------    --------    ---------    ------------------
<S>                           <C>          <C>           <C>         <C>          <C>
       ARTISTDIRECT            75927362      2/24/00     2742630      7/29/03     ARTISTdirect, Inc.

            A                  76072567      6/19/00     2764726      9/16/03     ARTISTdirect, Inc.

            A                  76072566      6/19/00     2457335       6/5/01     ARTISTdirect, Inc.

            A                  76072563      6/19/00     2569613      7/17/01     ARTISTdirect, Inc.

            A                  76072562      6/19/00     2473501      7/31/01     ARTISTdirect, Inc.

            A                  76072561      6/19/00     2473500      7/31/01     ARTISTdirect, Inc.

            A                  76072560      6/19/00     2524524       1/1/02     ARTISTdirect, Inc.

BORN ON THE WORLD WIDE WEB     75768869       8/4/99     2382999       9/5/00     ARTISTdirect, Inc.

BORN ON THE WORLD WIDE WEB     75768868       8/4/99     2382998       9/5/00     ARTISTdirect, Inc.

BORN ON THE WORLD WIDE WEB     75768011       8/4/99     2382995       9/5/00     ARTISTdirect, Inc.

  THE ULTIMATE BAND LIST       75306059      6/10/97     2407553     11/28/00     ARTISTdirect, Inc.

       ARTISTDIRECT            75418187      7/15/98     2355839       6/6/00     ARTISTdirect, Inc.

       ARTISTDIRECT            75061782       2/2/96     2155335       5/5/98     ARTISTdirect, Inc.

       ARTISTDIRECT            75061781       2/2/96     2288100     10/19/99     ARTISTdirect, Inc.

           UBL                 75306060      6/10/97     2190655      9/22/98     ARTISTdirect, Inc.
</TABLE>

                                      -1-
<PAGE>

State Trademark Filings

<TABLE>
<CAPTION>
         MARK                STATE       APPL. NO.    APPL. DATE    REG. NO.      REG. DATE              OWNER
----------------------    -----------    ---------    ----------    --------    --------------    ------------------
<S>                       <C>            <C>          <C>           <C>         <C>               <C>
THE ULTIMATE BAND LIST    Puerto Rico                                50161      April 30, 2002    ARTISTdirect, Inc.

     ARTISTDIRECT         Puerto Rico                                50159      April 30, 2002    ARTISTdirect, Inc.

     ARTISTDIRECT         Puerto Rico                                49609      March 31, 2002    ARTISTdirect, Inc.

         UBL              Puerto Rico                                49616      March 31, 2002    ARTISTdirect, Inc.

         UBL              Puerto Rico                                49615      March 31, 2002    ARTISTdirect, Inc.

THE ULTIMATE BAND LIST     Tennessee                                 49614      March 31, 2002    ARTISTdirect, Inc.

THE ULTIMATE BAND LIST    Puerto Rico                                49614      March 31, 2002    ARTISTdirect, Inc.

THE ULTIMATE BAND LIST     Tennessee                                 49613      March 31, 2002    ARTISTdirect, Inc.

THE ULTIMATE BAND LIST    Puerto Rico                                49613      March 31, 2002    ARTISTdirect, Inc.

THE ULTIMATE BAND LIST     Tennessee                                 49612      March 31, 2002    ARTISTdirect, Inc.
</TABLE>

                                      -2-
<PAGE>

<TABLE>
<S>                       <C>           <C>          <C>           <C>          <C>               <C>
THE ULTIMATE BAND LIST    Puerto Rico                              49612        March 31, 2002    ARTI STdirect, Inc.

     ARTISTDIRECT          Tennessee                               49611        March 31, 2002    ARTI STdirect, Inc.

     ARTISTDIRECT          Tennessee                               49610        March 31, 2002    ARTI STdirect, Inc.

     ARTISTDIRECT          Tennessee                               49609        March 31, 2002    ARTI STdirect, Inc.

         UBL              Puerto Rico                              50158        April 30, 2002    ARTI STdirect, Inc.

         UBL              Puerto Rico                              50157        April 30, 2002    ARTI STdirect, Inc.
</TABLE>

                                      -3-

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