UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                      ----

                                    FORM 10-K


     (Mark One)

         [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
              EXCHANGE ACT OF 1934

        For the fiscal year ended December 31, 2007

                                       or

         [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
              SECURITIES EXCHANGE ACT OF 1934

        For the transition period from ________ to ________

                        Commission File Number: 001-31366


                               filed on behalf of:
Corporate Backed Trust Certificates, Motorola Debenture-Backed
Series 2002-12 Trust
-------------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in Its Charter)

                                       by:
                             Lehman ABS Corporation
-------------------------------------------------------------------------------
              (Exact Name of Depositor as Specified in Its Charter)


                  Delaware                                         13-3447441
-----------------------------------------------           ---------------------
(State or other jurisdiction of incorporation             (I.R.S. Employer
 or organization)                                         Identification No.)


      745 Seventh Avenue, New York, New York                          10019
    -------------------------------------------           ---------------------
     (Address of principal executive offices)                      (Zip Code)


         Registrant's telephone number, including area code:  (212) 526-7000

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class                            Name of Each Exchange on Which
-------------------                            ------------------------------
                                                           Registered
                                                           ----------

Corporate Backed Trust Certificates,           New York Stock Exchange ("NYSE")
Motorola Debenture-Backed Series 2002-12


Securities registered pursuant to Section 12(g) of the Act:   None

<PAGE>

Indicate by check mark if the registrant is a well-known seasoned issuer, as
defined in Rule 405 of the Securities Act.
Yes [ ]         No [X]

Indicate by check mark if the registrant is not required to file reports
pursuant to Section 13 or Section 15(d) of the Act.
Yes [ ]         No [X]

Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.
Yes [X]         No [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K (ss. 229.405) is not contained herein, and will not be
contained, to the best of registrant's knowledge, in definitive proxy or
information statements incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K. [X]

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, a non-accelerated filer, or a smaller reporting company. See
the definitions of "large accelerated filer," "accelerated filer" and "smaller
reporting company" in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer [ ] Accelerated Filer [ ]  Non-Accelerated Filer [X]
Smaller Reporting Company [ ]

Indicate by check mark whether the registrant is a shell company (as defined in
Rule 12b-2 of the Act).
Yes [ ]         No [X]

State the aggregate market value of the voting and non-voting common equity held
by nonaffiliates computed by reference to the price at which the common equity
was last sold, or the average bid and asked price of such common equity, as of
the last business day of the registrant's most recently completed second fiscal
quarter.

         The registrant has no voting stock or class of common stock that is
held by nonaffiliates.



                       DOCUMENTS INCORPORATED BY REFERENCE

The distribution reports to security holders filed on Form 8-K during the fiscal
year in lieu of reports on Form 10-Q which include the reports filed on Form 8-K
listed in Item 15(a) hereto are incorporated by reference into part IV of this
Annual Report.

The following is reported for informational purposes only:

The distribution report filed on form 8-K for the October 1, 2007 distribution
was filed on October 5, 2007 under EDGAR C1K 0001174923.

                                Introductory Note

Lehman ABS Corporation (the "Depositor") is the Depositor in respect of the
Corporate Backed Trust Certificates, Motorola Debenture-Backed Series 2002-12
Trust (the "Trust"), a common law trust formed pursuant to the Standard Terms
for Trust Agreements, dated as of January 16, 2001, between the Depositor and
U.S. Bank Trust National Association, as trustee (the "Trustee"), as
supplemented by a Series Supplement (the "Series Supplement") dated as of June
18, 2002 in respect of the Trust, as supplemented by a Supplement to the Series
Supplement, dated as of June 21, 2002. The Trust's assets consist solely of
debentures issued by Motorola, Inc. The Certificates do not represent
obligations of or interests in the Depositor or the Trustee.



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<PAGE>

Motorola, Inc., the issuer of the underlying securities, is subject to the
information reporting requirements of the Securities Exchange Act of 1934, as
amended, (the "Exchange Act"). For information on the issuer of the underlying
securities, please see its periodic and current reports filed with the
Securities and Exchange Commission (the "Commission") under Motorola, Inc.'s
Exchange Act file number, 001-07221. The Commission maintains a site on the
World Wide Web at "http://www.sec.gov" at which users can view and download
copies of reports, proxy and information statements and other information
regarding issuers filed electronically through the Electronic Data Gathering,
Analysis and Retrieval system, or "EDGAR." Periodic and current reports and
other information required to be filed pursuant to the Exchange Act by the
issuer of the underlying securities may be accessed on this site. Neither the
Depositor nor the Trustee has participated in the preparation of such reporting
documents, or made any due diligence investigation with respect to the
information provided therein. Neither the Depositor nor the Trustee has verified
the accuracy or completeness of such documents or reports. There can be no
assurance that events affecting the issuer of the underlying securities or the
underlying securities have not occurred or have not yet been publicly disclosed
which would affect the accuracy or completeness of the publicly available
documents described above.

                                     PART I

Item 1.   Business.
          Not Applicable

Item 1A.  Risk Factors.
          Not Applicable

Item 1B.  Unresolved Staff Comments.
          Not Applicable

Item 2.   Properties.
          Not Applicable

Item 3.   Legal Proceedings.
          None

Item 4.   Submission of Matters to a Vote of Security Holders.
          None

                                     PART II

Item 5.  Market for Registrant's Common Equity, Related Stockholder Matters and
Issuer Purchases of Equity Securities.
         The publicly offered Certificates representing investors' interest in
the Trust are represented by one or more physical Certificates registered in the
name of "Cede & Co.", the nominee of The Depository Trust Company. Those
publicly offered Certificates are listed on the NYSE.

Item 6.  Selected Financial Data.
         Not Applicable

Item 7.  Management's Discussion and Analysis of Financial Condition and
Results of Operation.
         Not Applicable

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.
         Not Applicable

Item 8.  Financial Statements and Supplementary Data.
         Not Applicable

Item 9.  Changes in and Disagreements With Accountants on Accounting and
Financial Disclosure.



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<PAGE>

         None

Item 9A. Controls and Procedures.
         Not Applicable

Item 9A(T). Controls and Procedures.
         Not Applicable

Item 9B. Other Information.
         None

                                    PART III

Item 10. Directors, Executive Officers and Corporate Governance.
         Not Applicable

Item 11. Executive Compensation.
         Not Applicable

Item 12. Security Ownership of Certain Beneficial Owners and Management and
Related Stockholder Matters.
         Not Applicable

Item 13. Certain Relationships and Related Transactions, and Director
Independence.
         None

Item 14. Principal Accountant Fees and Services.
         Not Applicable

                                     PART IV

Item 15. Exhibits, Financial Statement Schedules.

         (a)   The following documents have been filed as part of this report.

               1.    Trustee's Distribution Statements documented on Form
                     8-K regarding the distributions from the Trust to the
                     certificateholders for the period from January 1,
                     2007 through and including December 31, 2007 have
                     been filed with the Securities and Exchange
                     Commission and are hereby incorporated by reference.
                     Filing dates are listed below:

         ----------------------------------------------------------------------
                  Trust Description            Distribution Date       Filed on
         ----------------------------------------------------------------------
         Corporate Backed Trust Certificates,    04/01/2007         04/04/2007
         Motorola Debenture-Backed Series        10/01/2007         10/05/2007*
         2002-12 Trust
         ----------------------------------------------------------------------


               *     The form 8-K for the October 1, 2007 distribution report
                     was filed on October 5, 2007 under C1K 0001174923.

               2.    None.

               3.    Exhibits:

                     31.1 - Certification by Senior Vice President of the
                     Registrant pursuant to 15 U.S.C. Section 7241, as
                     adopted pursuant to Section 302 of the Sarbanes-Oxley
                     Act of 2002.


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<PAGE>


                     31.2 - Annual Compliance Report by Trustee pursuant
                     to 15 U.S.C. Section 7241, as adopted pursuant to
                     Section 302 of the Sarbanes-Oxley Act of 2002.

                     The trust covered by this Annual Report was formed
                     prior to June 30, 2003 and there is no requirement in
                     the trust agreement for the preparation of a report
                     by an independent public accountant regarding the
                     Trustee's compliance with its obligations.

         (b)   See Item 15(a) above.

         (c)   Not Applicable.



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<PAGE>


                                   SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.

                                  Lehman ABS Corporation, as Depositor for the
                                  Trust (the "Registrant")



Dated:  March 26, 2008            By: /s/ Scott Barek
                                     -----------------------------------------
                                     Name:    Scott Barek
                                     Title:   Senior Vice President



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<PAGE>



                                  EXHIBIT INDEX

       ------------------------------------------------------------------------
         Reference            Description of Exhibits           Exhibit Number
        Number per                                            in this Form 10-K
        Item 601 of
        Regulation SK
       ------------------------------------------------------------------------
         (31.1)       Certification by Senior Vice President
                      of the Registrant pursuant to 15 U.S.C.         31.1
                      Section 7241, as adopted pursuant to
                      Section 302 of the Sarbanes-Oxley Act
                      of 2002.
       ------------------------------------------------------------------------
         (31.2)       Annual Compliance Report by Trustee
                      pursuant to 15 U.S.C. Section 7241, as          31.2
                      adopted pursuant to Section 302 of the
                      Sarbanes-Oxley Act of 2002.
       ------------------------------------------------------------------------




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