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

                                    FORM 10-K

                        FOR ANNUAL AND TRANSITION REPORTS
                     PURSUANT TO SECTIONS 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934




     (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, 2006

                                       or

         / /  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURI-
              TIES EXCHANGE ACT OF 1934

     For the transition period from ________ to ________

                     Commission File Number:    001-31366


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

                   Delaware                                 13-3447441
------------------------------------------------ -------------------------------
       (State or other jurisdiction of                  (I.R.S. Employer
        incorporation 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 Class                                       Name of Registered Exchange
--------------                                       ---------------------------

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


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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 of this chapter) 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, or a non-accelerated filer. See definition of "accelerated
filer and large accelerated filer" in Rule 12b-2 of the Act.
Large Accelerated Filer / /   Accelerated Filer / /    Non-Accelerated Filer /X/

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 non-affiliates 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
non-affiliates.



                       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 includes the reports filed on Form
8-K listed in Item 15(a) hereto.

                                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.

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


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<PAGE>

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.
---------------------
         None

Item 9A. Controls and Procedures.
---------------------------------
         Not Applicable

Item 9B. Other Information.
---------------------------
         None



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<PAGE>

                                    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 Stock Matters.
----------------------
         Not Applicable

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

Item 14. Principal Accounting 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, 2006 through
               and including December 31, 2006 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,                 04/01/2006      04/10/2006
Motorola Debenture-Backed Series 2002-12 Trust       10/01/2006      10/13/2006
----------------------------------------------- ------------------- ------------


          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.

               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.

     (b)  See Item 15(a) above.

     (c)  Not Applicable.



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<PAGE>

                                   SIGNATURES

     Pursuant to the requirements 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 21, 2007                 By:     /s/ CHARLES M. WEAVER
                                           -------------------------------------
                                                Name:  Charles M. Weaver
                                                Title: Senior Vice President




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<PAGE>

                                  EXHIBIT INDEX

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






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