Mosaid Seeks Clarification of Disclaimer Term in Markman Ruling

OTTAWA, Ontario, Canada - April 06, 2004 – MOSAID Technologies Incorporated (TSX:MSD) today announced that it has filed a Motion for Limited Reargument or Clarification of Claim Construction (Markman) Ruling. The Motion seeks a clarification and amendment of the Markman Order delivered on March 22, 2004 by Judge William J. Martini of the United States District Court for the District of New Jersey in the ongoing patent infringement litigation between MOSAID Technologies, and Samsung Electronics and Infineon Technologies.

The Markman Order construed the meaning of the patent claim terms in dispute between the parties. A copy of the Markman Order and Opinion, together with MOSAID’s Motion, is available at http://www.mosaid.com/licensing/samsung_litigation_update.htm

MOSAID’s Motion requests an amendment to the definition of "double bootstrapping circuit" which was not one of the 30 disputed claim terms but was introduced by the Court as part of a disclaimer associated with a number of the terms. The Motion seeks a discretionary remedy granted in limited circumstances where evidence or issues have been overlooked. Ultimately the issue of whether the Samsung and Infineon DRAM products infringe MOSAID’s patents will be determined by the Court in the scheduled summary judgment motions or at trial.

MOSAID filed a further motion yesterday for an order imposing sanctions against Samsung arising from its failure to deliver technical documentation related to its DRAM products.

About MOSAID

MOSAID Technologies Incorporated is an independent semiconductor company operating through two divisions:

• Intellectual Property - a developer and licensor of memory intellectual property.
• Systems - the leading supplier of engineering memory test and analysis systems to memory manufacturers, foundries and fabless chip companies around the world.

Founded in 1975, MOSAID is based in Ottawa, Ontario, Canada, with offices in Santa Clara, California; Newcastle upon Tyne, U.K; and Tokyo, Japan. For more information, visit the Company’s web site at  www.mosaid.com.

Forward Looking Information
This document may contain forward-looking statements relating to the Company’s operations or to the environment in which the Company operates. Such statements are based on current expectations that are subject to a variety of risks and uncertainties that are difficult to predict and/or beyond MOSAID’s control. Actual results may differ materially from those expressed in any forward-looking statements, due to factors such as customer demand and timing of purchasing decisions, product and business mix, competitive products, pricing pressures as well as general economic and industry conditions. MOSAID assumes no obligation to update these forward-looking statements, or to update the reasons why actual results could differ from those reflected in any forward-looking statements. Additional information identifying risks and uncertainties is contained in other public filings with the Ontario Securities Commission.