A favorable verdict for Metso in a patent infringement lawsuit in the United States

Metso Corporation's stock exchange release on December 7, 2010 at 11.00 a.m. local time

Metso has been successful in protecting its intellectual property rights against
a competitor. A jury of United States District Court for the Eastern District of
New York has given a verdict in a favor of Metso in a lawsuit Metso versus
Powerscreen International Distribution Ltd (today known as Terex GB Ltd), Terex
Corporation, Emerald Equipment Systems, Inc. et al., involving the protection of
Metso's lateral folding conveyor patent rights related to mobile crushing and
screening plants. According to the jury verdict, Metso's lateral folding
conveyor patent in question is valid and the defendants have infringed it since
year 2000.

Further the jury has found that the infringement is willful, therefore
potentially allowing Metso to collect multiple damages. The verdict awards
damages to Metso in the amount of about EUR 12 million (about USD 16 million).
Subject to post-trial motions, a court ruling is expected to be received in
spring 2011 at which point total compensation for damages payable to Metso will
be known. In the event the court ruling is appealed, the final outcome of the
lawsuit would be expected by 2012. Metso will book the compensation in its
financial results only when the final outcome of the lawsuit is clear, earliest
in 2011.

Metso will continue to be active in protecting its intellectual property rights
globally, acting with the objective to enhance fair competition.

Metso is a global supplier of sustainable technology and services for mining,
construction, power generation, automation, recycling and the pulp and paper
industries. We have about 27,000 employees in more than 50 countries.

For further information, please contact:
Erica Aminoff, Senior Vice President, Chief Legal Officer, Mining and
Construction Technology, Metso, tel. +358 20 484 3246

Further information for investors, please contact:
Johanna Henttonen, Vice President, Investor Relations, Metso Corporation,
tel. +358 20 484 3253

Metso Corporation

Olli Vaartimo

Johanna Henttonen
Vice President, Investor Relations

NASDAQ OMX Helsinki Ltd