Supreme Court rules against Microsoft in patent lawsuit

The Supreme Court of the United States has ruled unanimously in favour of i4i in the long-running i4i versus Microsoft patent infringement lawsuit.

The Supreme Court did not accept Microsoft’s request to lower the standard of proof for challenges to the validity of a properly issued patent.

As a result of this decision, i4i has won its patent infringement case against Microsoft, which it brought in 2007, accusing Microsoft of wilfully infringing i4i’s patent covering a document system that relies on the XML custom formatting function.

At trial, the jury ruled in favour of i4i and awarded $200m (£122m) in damages (now upwards of $300m with enhancements and interest).

The Honorable Judge Leonard Davis entered judgement on the verdict and issued a permanent injunction against Microsoft.