The court?s decision to not hear Novell's appeal means that the 10th U.S. Circuit Court of Appeals ruling passed in September 2013 in favor of Microsoft will remain in place.
The court of appeals unanimously dismissed Novell Inc's appeal in which the company had claimed that Microsoft violated the Sherman Antitrust Act when it decided to keep its intellectual property secret while developing its Windows 95 operating system. Novell had sought more than $3 billion as compensation from Redmond-based firm.
Microsoft has faced several antitrust violations cases filed by government prosecutors, consumers and competitors since it emerged as a software giant in the early 1990s.
The Novell case was first filed in 2004 and in this case Novell claimed that Microsoft's suite of applications, including WordPerfect, suffered because the company decided not to share the information.
Novell accused Microsoft of using its market power in operating systems to promote its own applications.
In a 2011 trial, a jury failed to pass a verdict in this case but U.S. District Judge J. Frederick Motz in Baltimore, who later oversaw consolidated proceedings against Microsoft, passed the verdict in favor of Microsoft.