Status on patent disputes with Enercon GmbH, Aloys Wobben

Aarhus N, DENMARK


Copenhagen Stock Exchange                                                       
Nikolaj Plads 6                                                                 
1067 Copenhagen                                                                 



Randers, 12 April 2007
Stock exchange announcement No. 15/2007
                   
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

Attachments

070412-mfkuk-15.pdf