<PAGE>

                                                                    EXHIBIT 4.11

THIS TRADEMARK LICENCE AGREEMENT is made this 8th day of April 2004
BETWEEN:-

1)    NAM TAI ELECTRONICS, INC., an International Business Company incorporated
      and existing under the laws of the British Virgin Islands, having its
      registered office at McNamara Chambers, P.O. Box 3342, Road Town, Tortola,
      British Virgin Islands ("Licensor") of the one part; and

2)    NAM TAI ELECTRONIC & ELECTRICAL PRODUCTS LIMITED, a company incorporated
      and existing under the laws of the Cayman Islands, having its registered
      office at Century Yard, Cricket Square, Hutchins Drive, P.O. Box 2681 GT,
      George Town, Grand Cayman, British West Indies ("Licensee") of the other
      part

WHEREAS

1)    The Licensor currently holds the entire issued share capital of the
      Licensee which is arranging for the listing of its shares on The Stock
      Exchange of Hong Kong Limited.

2)    The Licensor, being the legal and beneficial owner of the Trademarks,
      particulars of which are set out in the Schedule hereto ("Trademarks") has
      agreed to grant a sole licence to the Licensee with a right to sub-license
      to the Licensee's subsidiaries (the Licensee and its subsidiaries shall
      collectively be referred to as the "NTEEP Group"), to use the Trademarks
      in connection with the trade, businesses and operations of the NTEEP Group
      upon the terms hereinafter appearing.

IT IS HEREBY AGREED AND DECLARED as follows:-

1.    The Licensor hereby grants to the Licensee a sole and royalty-free licence
      to use the Trademarks. Such licence shall include the right to sub-license
      to the Licensee's subsidiaries. For the avoidance of doubt, the sole
      licence shall not prohibit any use of the Trademarks by the Licensor for
      the purpose of conducting its investment holding business.

2.    The Licensor has the sole and absolute discretion to, from time to time,
      extend the registration of the Trademarks to other classes or
      jurisdictions. Any new trademarks so registered shall be added to the
      definition of the Trademarks in the Schedule of this Agreement. Where
      required by the law of the relevant jurisdiction, the Licensee shall be
      registered as a registered user of the Trademarks.

                                     - 1 -

<PAGE>

3.    The Licensee hereby agrees that it will only use the Trademarks upon and
      in relation to those goods and services in respect of which the Trademarks
      have been registered ("Goods and Services") under the provisions of this
      Agreement and subject to the conditions hereof governing the use of the
      Trademarks.

4.    The Licensee shall be permitted to use the Trademarks on the Goods and
      Services only so long as such Goods and Services conform to the standards
      of quality, specifications or directions as may, from time to time, be
      reasonably laid down by or on behalf of the Licensor.

5.    The Licensee hereby agrees that, at reasonable times and upon reasonable
      notice being given by the Licensor, it shall allow the Licensor's duly
      authorised representatives free access to inspect samples and test the
      Goods and Services in the possession of or under the control of the
      Licensee to ensure that the Goods and Services produced or offered by the
      Licensee conform to the standards of quality, specifications or directions
      as may, from time to time, be laid down by or on behalf of the Licensor.

6.    If the Licensee uses the Trademarks in a manner inconsistent with or
      otherwise than under the terms and conditions hereof and fails to remedy
      within two (2) weeks of written notice from the Licensor, this Agreement
      shall cease and terminate forthwith.

7.    On termination of this Agreement for whatever reason, the Licensee shall
      discontinue all use of the Trademarks. Notwithstanding the foregoing, the
      Licensee shall have the right to dispose of all Goods and Services bearing
      the Trademarks and to fulfil any orders of the Goods and Services
      confirmed prior to termination subject to such reasonable terms as the
      parties may agree.

8.    The Licensee undertakes to the Licensor that any sublicence granted
      pursuant to this Agreement shall be in the form as appearing in Appendix I
      and that the termination of this Agreement shall automatically terminate
      all sublicences. The Licensee further undertakes to duly, promptly and
      strictly enforce the terms of any sublicence as may be required by the
      Licensor.

9.    This Agreement shall run from the date hereof and shall continue
      thereafter in force from year to year unless terminated by either party
      giving to the other 3 months previous notice in writing. Notwithstanding
      the foregoing, this

                                     - 2 -

<PAGE>

      Agreement shall be deemed automatically terminated when the Licensor no
      longer holds more than 50% of the issued share capital of the Licensee.

10.   All provisions of this Agreement which in their nature shall survive
      termination to give effect to their meaning shall survive termination and
      remain in full force and effect notwithstanding termination.

11.   The governing law of this Agreement shall be the laws of the Hong Kong
      Special Administrative Region ("Hong Kong") and the parties agree to
      submit to the non-exclusive jurisdiction of the Hong Kong courts.

IN WITNESS WHEREOF this Agreement is duly executed by the authorised
representatives of the parties on the date and year first above written.

                                    SCHEDULE

A.    HONG KONG

<TABLE>
<CAPTION>
                                                 Goods and Services for respect of
Trademark          Registration No.    Class     which the Trademark is registered
---------------    ----------------    -----    ------------------------------------
<S>                <C>                 <C>      <C>
Namtai & Device    1990B1259           9        calculators, digital scales, digital
                                                thermometers, digital blood pressure
                                                meters

Namtai & Device    1990B1260           16       electronic typewriters

Device             19900269            9        calculators, digital scales, digital
                                                thermometers, digital blood pressure
                                                meters

Device             19900270            16       electronic typewriters
</TABLE>

B.    CANADA

<TABLE>
<CAPTION>
                                                Goods and Services for respect of
Trademark          Registration No.    Class    which the Trademark is registered
---------          ----------------    -----    ---------------------------------
<S>                <C>                 <C>      <C>
NAMTAI             381244                -      Wares: calculators, scales,
                                                thermometers, blood pressure
</TABLE>

                                     - 3 -

<PAGE>

<TABLE>
<S>                <C>                 <C>      <C>
                                                meters and typewriters Services: custom
                                                design and manufacturing of electronic
                                                products for others and the operation
                                                of a wholesale business of selling
                                                electronic products

Namtai & Device    381245              -        Wares: calculators, scales,
                                                thermometers, blood pressure meters
                                                and typewriters Services: custom
                                                design and manufacturing of electronic
                                                products for others and the operation
                                                of a wholesale business of selling
                                                electronic products
</TABLE>

                                     - 4 -

<PAGE>

Sealed with the Common Seal of     )
NAM TAI ELECTRONICS, INC.          )
in accordance with its constitution)
in the presence of:-               )               ________________________
                                                   Koo Ming Kown
                                                   director

Sealed with the Common Seal of     )
NAM TAI ELECTRONIC &               )
ELECTRICAL PRODUCTS                )
LIMITED in accordance with its     )
constitution in the presence of:-  )               _________________________
                                                   Wong Kuen Ling
                                                   director

                                                   _________________________
                                                   Guy Jean Francois Bindels
                                                   director

                                     - 5 -

<PAGE>

                        Appendix I - Pro Forma Sublicence

THIS TRADEMARK SUBLICENCE AGREEMENT is made this        day     of
BETWEEN:-

1)    NAM TAI ELECTRONIC & ELECTRICAL PRODUCTS LIMITED, a company incorporated
      and existing under the laws of the Cayman Islands, having its registered
      office at Century Yard, Cricket Square, Hutchins Drive, P.O. Box 2681 GT,
      George Town, Grand Cayman, British West Indies ("Sub-Licensor") of the one
      part; and

2)    [name of sub-licensee] [ description of company particulars]
      ("Sub-Licensee") of the other part

WHEREAS

1)    The Sub-Licensor is licensed by Nam Tai Electronics, Inc., the legal and
      beneficial owner ("Owner") of the Trademarks, particulars of which are set
      out in the Schedule hereto ("Trademarks"), to use the Trademarks with a
      right to sub-license such use to the Sub-Licensor's subsidiaries (the
      Licensee and its subsidiaries shall collectively be referred to as the
      "NTEEP Group") in connection with the trade, businesses and operations of
      the NTEEP Group upon the terms hereinafter appearing.

2)    The Sub-Licensee is a subsidiary of the Sub-Licensor and desires and
      agrees to use the Trademarks in accordance with the terms hereof.

IT IS HEREBY AGREED AND DECLARED as follows:-

1.    The Sub-Licensor hereby grants to the Sub-Licensee a non-exclusive,
      personal and royalty-free licence to use the Trademarks. The Sub-Licensee
      acknowledges that the Owner is the legal and beneficial owner of the
      Trademarks. The Sub-Licensee agrees that the Sub-Licensor has the sole and
      absolute discretion to add any new trademarks to the definition of the
      Trademarks in the Schedule of this Agreement as may be permitted by the
      Owner. Where required by the law of the relevant jurisdiction, the
      Sub-Licensee shall be registered as a registered user of the Trademarks.

2.    The Sub-Licensee hereby agrees that it will only use the Trademarks upon
      and in relation to those goods and services in respect of which the
      Trademarks have been registered ("Goods and Services") under the
      provisions of this Agreement and subject to the conditions hereof
      governing the use of the Trademarks.

                                     - 6 -

<PAGE>

3.    The Sub-Licensee shall be permitted to use the Trademarks on the Goods and
      Services only so long as such Goods and Services conform to the standards
      of quality, specifications or directions as may, from time to time, be
      reasonably laid down by or on behalf of the Owner.

4.    The Sub-Licensee hereby agrees that, at reasonable times and upon
      reasonable notice being given by the Sub-Licensor and/or the Owner, it
      shall allow the Sub-Licensor's and/or the Owner's duly authorised
      representatives free access to inspect samples and test the Goods and
      Services in the possession of or under the control of the Sub-Licensee to
      ensure that the Goods and Services produced or offered by the Sub-Licensee
      conform to the standards of quality, specifications or directions as may,
      from time to time, be laid down by or on behalf of the Owner.

5.    If the Sub-Licensee uses the Trademarks in a manner inconsistent with or
      otherwise than under the terms and conditions hereof and fails to remedy
      within two (2) weeks of written notice from the Sub-Licensor, this
      Agreement shall cease and terminate forthwith.

6.    On termination of this Agreement for whatever reason, the Sub-Licensee
      shall discontinue all use of the Trademarks. Notwithstanding the
      foregoing, the Sub-Licensee shall have the right to dispose of all Goods
      and Services bearing the Trademarks and to fulfil any orders of the Goods
      and Services confirmed prior to termination subject to such reasonable
      terms as the parties may agree.

7.    This Agreement shall run from the date hereof and shall continue
      thereafter unless terminated by either party giving to the other 3 months
      previous notice in writing. Notwithstanding the foregoing, this Agreement
      shall be deemed automatically terminated if the Licence Agreement relating
      to the Trademarks between the Sub-Licensor and the Owner is terminated for
      whatever reasons.

8.    All provisions of this Agreement which in their nature shall survive
      termination to give effect to their meaning shall survive termination and
      remain in full force and effect notwithstanding termination.

9.    The governing law of this Agreement shall be the laws of the Hong Kong
      Special Administrative Region ("Hong Kong") and the parties agree to
      submit to the non-exclusive jurisdiction of the Hong Kong courts.

                                     - 7 -

<PAGE>

IN WITNESS WHEREOF this Agreement is duly executed by the authorised
representatives of the parties on the date and year first above written.

                                    SCHEDULE

A.    HONG KONG

<TABLE>
<CAPTION>
                                                Goods and Services for respect of
Trademark          Registration No.    Class    which  the Trademark is registered
---------------    ----------------    -----    ------------------------------------
<S>                <C>                 <C>      <C>
Namtai & Device    1990B1259           9        calculators, digital scales, digital
                                                thermometers, digital blood pressure
                                                meters

Namtai & Device    1990B1260           16       electronic typewriters

Device             19900269            9        calculators, digital scales, digital
                                                thermometers, digital blood pressure
                                                meters

Device             19900270            16       electronic typewriters
</TABLE>

B.    CANADA

<TABLE>
<CAPTION>
                                                Goods and Services for respect of
Trademark          Registration No.    Class    which the Trademark is registered
---------------    ----------------    -----    --------------------------------------
<S>                <C>                 <C>      <C>
NAMTAI             381244              -        Wares: calculators, scales,
                                                thermometers, blood pressure meters
                                                and typewriters Services: custom
                                                design and manufacturing of electronic
                                                products for others and the operation
                                                of a wholesale business of selling
                                                electronic products

Namtai & Device    381245              -        Wares: calculators, scales,
                                                thermometers, blood pressure meters
                                                and typewriters Services: custom
                                                design and manufacturing of electronic

</TABLE>

                                     - 8 -

<PAGE>

<TABLE>
<S>                                             <C>
                                                products for others and the operation
                                                of a wholesale business of selling
                                                electronic products
</TABLE>

                                     - 9 -

<PAGE>

Sealed with the Common Seal of     )
NAM TAI ELECTRONIC &               )
ELECTRICAL PRODUCTS                )
LIMITED in accordance with its     )
constitution in the presence of:-  )

Sealed with the Common Seal of     )
the Sub-Licensee in accordance     )
with its constitution in the       )
presence of:-                      )

                                     - 10 -