Microsoft has launched a new legal challenge to an European Union competition ruling ordering it to make the code used for the Windows operating system more open to competitors.
In a 1 June decision, the EU ruled that Microsoft must make its workgroup server protocols available to competitors, to allow other software firms to more easily develop applications for the Windows environment.
The software giant has already been fined 497m euros (£340m), after the EU found last year that it had abused its dominant position in the market.
In a statement, Microsoft said it was seeking to have the June decision overturned. “Microsoft has filed an application for annulment with the Court of First Instance specifically concerning the issue of broad licences in source code form-of-communications protocols which are based upon Microsoft’s intellectual property,” it said.
“This filing is the result of the agreement we reached with the Commission in June to put this particular issue to the Court of First Instance for guidance and avoid any further delay in the process.
“We are taking this step so the Court can begin its review now of this issue given its far-reaching implications for the protection of our intellectual property rights around the world.”