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<CONFORMED-NAME>RESEARCH IN MOTION LTD
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<FISCAL-YEAR-END>0228
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<FILM-NUMBER>05842747
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<BUSINESS-ADDRESS>
<STREET1>295 PHILLIP ST
<STREET2>WATERLOO
<CITY>ONTARIO CANADA
<STATE>A6
<ZIP>00000
<PHONE>5198887465
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>295 PHILLIP STREET
<STREET2>WATERLOO, ONTARIO N2L 3W8
<CITY>ONTARIO
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<ZIP>N2L 3W8
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<TYPE>6-K
<SEQUENCE>1
<FILENAME>pr051805tdc.htm
<DESCRIPTION>PR051805 - TDC MOBILE LAUNCHES BLACKBERRY
<TEXT>
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     <!-- Control Number: pr051805                                                         -->
     <!-- Rev Number:     001                                                              -->
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     <!-- Project Name:   PR051805 - TDC Mobile                                            -->
     <!-- Firm Name:      Research In Motion                                               -->
     <TITLE>pr051805 - TDC Mobile Launches BlackBerry</TITLE>
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<TR VALIGN=TOP>
<TD><div align="center"><font face="Times New Roman, Times, Serif" size=2><u><b>FORM
  6-K</b></u></font><BR><A NAME=A003></A></div><P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SECURITIES
AND EXCHANGE COMMISSION </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Washington, D.C. 20549 </FONT></P>

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<A NAME=A005></A>
<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Report of Foreign
Private Issuer </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Pursuant to Rule 13a-16
or 15d-16 of </FONT></P>

<P ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>the Securities Exchange Act
of 1934 </FONT></P>
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</TD>
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<BR>
<p>&nbsp;</p>
<table width="600" border="0">
  <tr>
    <td width="230">For the month of</td>
    <td width="236"><b>May</b>
      <hr>
    </td>
    <td width="112"><b>2005</b>
      <hr>
    </td>
  </tr>
  <tr>
    <td width="230"><font face="Times New Roman, Times, Serif" size=2>Commission
      File Number</font></td>
    <td width="236"><b><font face="Times New Roman, Times, Serif" size=2>000-29898
      </font></b>
      <hr>
      <b><font face="Times New Roman, Times, Serif" size=2> </font></b></td>
    <td width="112">
      &nbsp;<hr>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center"> <font face="Times New Roman, Times, Serif" size=3><b>Research
        In Motion Limited</b> </font>
        <hr>
        (Translation of registrant&#146;s name into English)</div>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center">295 Phillip Street, <br>
        Waterloo, Ontario, Canada <br>
        N2L 3W8 </div>
    </td>
  </tr>
  <tr>
    <td colspan="3">
      <div align="center"><font face="Times New Roman, Times, Serif" size=2>(Address
        of principal executive offices) </font></div>
    </td>
  </tr>
</table>

<P>&nbsp;</P>

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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark whether the registrant files or will file annual reports under cover Form
20-F or Form 40F.  </FONT></TD></TR>
</TABLE>
<div align="center"><BR>
  <table width="427" border="0">
    <tr>
      <td width="200"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 20-F
        ___________</font></td>
      <td width="217"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Form 40-F_____<u>X</u>_______</font></td>
    </tr>
  </table>
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<br>
<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark         if the registrant is submitting the Form&nbsp;6-K in paper as
permitted         by Regulation&nbsp;S-T Rule&nbsp;101(b)(1):________________  </FONT></TD></TR>
</TABLE>
<BR>

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<TABLE WIDTH=600 CELLSPACING=0 CELLPADDING=0 BORDER=0>
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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark if   the registrant is submitting the Form&nbsp;6-K in paper as permitted
by Regulation&nbsp;S-T   Rule&nbsp;101(b)(7):________________  </FONT></TD></TR>
</TABLE>
<BR>

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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate
by check mark whether by furnishing the information contained in this Form, the
registrant is also thereby furnishing the information to the Commission pursuant to Rule
12g3-2(b) under the Securities Exchange Act of 1934.  </FONT></TD></TR>
</TABLE>
<div align="center"><BR>
  <table width="441" border="0">
    <tr>
      <td> <FONT FACE="Times New Roman, Times, Serif" SIZE=2>Yes__________________</font></td>
      <td><FONT FACE="Times New Roman, Times, Serif" SIZE=2>No________<u>X</u>__________</font></td>
    </tr>
  </table>
  <br>
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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If
"Yes" is marked, indicate below the file number assigned to the registrant   in
connection with Rule 12g3-2(b) : 82-_______________  </FONT></TD></TR>
</TABLE>
<BR>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>DOCUMENT INDEX </FONT></H1>
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<BR>
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<A NAME=A011></A>
<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2><I>&nbsp;&nbsp;&nbsp;
  .</I> </FONT></P>

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    <TD ALIGN=RIGHT WIDTH=8%>
      <div align="center">
        <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Document</FONT></p>
        <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>1. </FONT></p><BR><BR>
        </div>
    </TD>

    <TD ALIGN=LEFT WIDTH=81%>
      <p>&nbsp;</p>
      <p><FONT FACE="Times New Roman, Times, Serif" SIZE=2>News Release dated May 18, 2005
 (&#147;TDC Mobile Launches BlackBerry&quot;)</FONT></p>
    </TD>

    <TD WIDTH=11%>
      <P ALIGN=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2> Page
        No</FONT></P>
      <P ALIGN=center><FONT FACE="Times New Roman, Times, Serif" SIZE=2>3 </FONT></P><BR>
    </TD>
                    </TR>
                    </TABLE>
                    <BR>


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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Document 1 </FONT></P>
<HR SIZE=5 COLOR=GRAY NOSHADE>




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<P ALIGN=RIGHT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>May 18, 2005 </FONT></P>

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<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>FOR IMMEDIATE RELEASE </FONT></H1>

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<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>TDC Mobile Launches
BlackBerry </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2><I>Taastrup, Denmark and Waterloo,
ON</I> &#150; TDC Mobile and Research In Motion (RIM) (Nasdaq: RIMM: TSX: RIM) today
announced the introduction of BlackBerry&reg; to Danish mobile professionals for the first
time. TDC Mobile is launching the new service with the BlackBerry 7290 Wireless
Handheld&#153;. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>The BlackBerry 7290&#153; combines
e-mail, phone, text messaging, organizer, web and corporate data applications in a single
handheld.&nbsp;The BlackBerry 7290 delivers an exceptional voice experience with quad-band
support (operating on the GSM/GPRS 850/900/1800/1900 MHz frequencies) enabling domestic
and international roaming, and also features Bluetooth&reg; support for use with wireless
headsets and car kits. In addition, the BlackBerry 7290 features 32 MB flash memory and 4
SRAM, a bright LED backlight, as well as an optimized QWERTY keyboard for easy dialing and
typing. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#147;TDC Mobile is committed to
providing its customers with the best mobile solutions on the market and BlackBerry is the
leading wireless solution for mobile customers who want to stay connected and productive
while on the go. We are pleased to bring the BlackBerry 7290 to our customers, providing
them with an advanced wireless solution for their communication and information
needs,&#148; said Peter Ibsen, Senior Vice President, TDC Mobile. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>BlackBerry enables always-on
synchronization with email and other corporate data applications. This means that the user
is not required to do anything in order to pick up new email &#150; BlackBerry
&#147;pushes&#148; information to the device automatically. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&#147;BlackBerry is already an
international success story with over three million subscribers around the world. We are
very pleased to be working with TDC Mobile to extend the reach of BlackBerry into the
Danish market and help mobile professionals enhance their communications and
productivity,&#148; said Mark Guibert, Vice President, Corporate Marketing, Research In
Motion. </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Customers traveling abroad will also
benefit greatly from BlackBerry as TDC Mobile has concluded more roaming agreements with
international operators than any other company in Denmark. At the moment, TDC
Mobile&#146;s customers will be able to use BlackBerry with 86 operators in 44 countries.* </FONT></P>

<!-- MARKER FORMAT-SHEET="Para Flush" FSL="Default" -->
<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>For corporate customers, BlackBerry
Enterprise Server&#153; software tightly integrates with Microsoft&reg; Exchange, IBM
Lotus&reg; Domino&#153; and Novell GroupWise&reg; and works with existing enterprise
systems to enable secure, push-based wireless access to email and other corporate data. </FONT></P>

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     <P ALIGN=CENTER>_________________ </P>

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<A NAME=A004></A>
<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>About TDC </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>TDC is a Danish-based provider of
communications solutions with significant presence in selected markets in Northern and
Central Europe. TDC has six main business lines; TDC Solutions, TDC Mobile International,
TDC Switzerland, TDC Cable TV, TDC Directories and TDC Services. TDC was partly privatized
in 1994 and fully privatized in 1998. The shares are primarily held by institutional
investors and private individuals in Europe and the USA. Read more about BlackBerry from
TDC Mobile here (in Danish): <U>www.tdcmobil.dk/blackberry</U> </FONT></P>

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<H1 ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=3>About Research In Motion
(RIM) </FONT></H1>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Research In Motion is a leading
designer, manufacturer and marketer of innovative wireless solutions for the worldwide
mobile communications market. Through the development of integrated hardware, software and
services that support multiple wireless network standards, RIM provides platforms and
solutions for seamless access to time-sensitive information including email, phone, SMS
messaging, Internet and Intranet-based applications. RIM technology also enables a broad
array of third-party developers and manufacturers to enhance their products and services
with wireless connectivity to data. RIM&#146;s portfolio of award-winning products,
services and embedded technologies is used by thousands of organizations around the world
and include the BlackBerry&reg; wireless platform, the RIM Wireless Handheld&#153; product
line, software development tools, radio modems and software/hardware licensing agreements.
Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America,
Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the
Toronto Stock Exchange (TSX: RIM). For more information, visit <U>www.rim.com </U>or
<U>www.blackberry.com</U>. </FONT></P>

<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
For further information, please contact:</FONT></P>

<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>
<B>Media Contacts:</B><BR>
TDC's Press Office, tel. +45 70 20 35 10<BR>
www.tdc.com<BR><BR>

Hotwire PR for RIM<BR>
+44 207 608 2500<BR>

Courtney Flaherty<BR>
Brodeur Worldwide for RIM<BR>
+1 212.771.3637<BR>
cflaherty@brodeur.com<BR><BR>

<B>Investor Contact:</B><BR>
RIM Investor Relations<BR>
(519) 888-7465<BR>
investor_relations@rim.com<BR>
</FONT></P>


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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>* Please check with tdcmobil.dk for
roaming agreements. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Forward-looking statements in this
news release are made pursuant to the &#147;safe harbor&#148; provisions of the United
States Private Securities Litigation Reform Act of 1995. When used herein, words such as
&#147;intend&#148; and similar expressions are intended to identify forward-looking
statements. Forward-looking statements are based on assumptions made by and information
available to Research In Motion Limited. Investors are cautioned that such forward-looking
statements involve risks and uncertainties. Important factors that could cause actual
results to differ materially from those expressed or implied by such forward looking
statements include, without limitation, possible product defects and product liability,
risks related to international sales and potential foreign currency exchange fluctuations,
the initiation or outcome of litigation, acts or potential acts of terrorism,
international conflicts, significant fluctuations of quarterly operating results, changes
in Canadian and foreign laws and regulations, continued acceptance of RIM&#146;s products,
increased levels of competition, technological changes and the successful development of
new products, dependence on third-party networks to provide services, dependence on
intellectual property rights and other risks and factors detailed from time to time in
RIM&#146;s periodic reports filed with the United States Securities and Exchange
Commission, and other regulatory authorities. The Company has no intention or obligation
to update or revise any forward-looking statements, whether as a result of new
information, future events or otherwise. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>The BlackBerry and RIM families of
related marks, images and symbols are the exclusive properties and trademarks of Research
In Motion Limited. RIM, Research In Motion and BlackBerry are registered with the U.S.
Patent and Trademark Office and may be pending or registered in other countries. All other
brands, product names, company names, trademarks and service marks are the properties of
their respective owners. </FONT></P>







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<TD><H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>SIGNATURES
</FONT></H1>
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<BR>
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<TD><P><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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. </FONT></P><P>&nbsp;
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<BR>

<P></P><table width="600" border="0"><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td colspan="2"><div align="center"><b><font face="Times New Roman, Times, Serif" size=3>Research
        In Motion Limited </font></b></div><hr><div align="center">(Registrant) </div></td></tr><tr><td width="33">Date:</td><td width="209"><div align="center"><u>May 18, 2005</u></div></td><td width="59">By:</td><td width="271">/s/ Rob Duncan <hr><div align="center">(Signature)
</div></td></tr><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td width="59">&nbsp;</td><td width="271">Rob Duncan</td></tr><tr><td width="33">&nbsp;</td><td width="209">&nbsp;</td><td width="59">&nbsp;</td><td width="271">Vice President, Corporate Controller</td></tr></table>


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