Status on patent disputes with Enercon GmbH, Aloys Wobben

In stock exchange announcements Nos. 27/2005 of 19 August 2005, 30/2005 of 16 September 2005, 39/2005 of 22 November 2005, 22/2006 of 5 April 2006 and 12/2007 of 2 April 2007, Vestas Wind Systems A/S has informed of various patent disputes with Mr Aloys Wobben/Enercon GmbH. Mr Aloys Wobben claims that Vestas Wind Systems A/S infringes various patents; primarily in the area of grid connection, but also in other technical areas.

In the area of grid connection, Mr Aloys Wobben has initiated court proceedings in England and Scotland, the Netherlands and latest in Canada. There are no court decisions yet in these cases and nothing to report in addition to previous announcements.
In other technical areas Mr Aloys Wobben has initiated court proceedings in Germany:

In a case trying validity of Aloys Wobben’s patent on lightning protection, Vestas Wind Systems A/S has prevailed in two instances (pending the Federal Supreme Court, Mr Aloys Wobben trying for procedural errors). Should Vestas Wind Systems A/S also prevail in the Federal Supreme Court, which is expected, the related infringement case in which Aloys Wobben claims infringement of said patent will also be won by Vestas Wind Systems A/S.

In a case trying validity of Aloys Wobben’s patent on oscillation, Vestas Wind Systems A/S has prevailed in all three instances.
Further, in Germany, in a case trying validity of one of Aloys Wobben’s patents in the area of grid connection (frequency), Vestas Wind Systems A/S has prevailed before the Federal Patent Court (pending the Federal Supreme Court, Mr Aloys Wobben again trying for procedural error).

For the time being there are no further comments on these matters.
Any questions may be addressed to the Executive Management at Vestas Wind Systems A/S, or to Peter Wenzel Kruse, Vice President of Communication & IR at Vestas Wind Systems A/S, telephone +45 9730 0000.

Yours sincerely,
Vestas Wind Systems A/S

Ditlev Engel
President and CEO