i4i v. Microsoft


Current Case

  • Supreme Court of the United States issues unanimous ruling in favour of i4i in patent infringement case against Microsoft
  • Read the Official Supreme Court decision here: 6/09/11 – Microsoft Corp. v. i4i Ltd. Partnership

Brief Case Summary:

  • March 2007, i4i sues Microsoft for willful infringement.
  • May 20, 2009, jury finds i4i’s Patent ‘449 valid and infringed. i4i awarded damages.
  • August 11, 2009, The Honorable Leonard Davis issues a Final Judgment against Microsoft that included both damages in excess of $290 million to i4i, and a Permanent Injunction as of January 11, 2010.
  • Microsoft unsuccessfully appeals to the Federal Circuit Court of Appeals in late 2009, and also unsuccessfully sought a rehearing in early 2010.
  • The United States Patent and Trademark Office (PTO) reaffirms validity of the patent, and in late 2010, denied Microsoft’s second application for a re-examination.
  • November 2010, the Supreme Court of the United States agrees to hear i4i v Microsoft case in 2011.
  • January 14, 2011, Biotechnology Industry Organization, BIO, files a petition to the Attorney General in support of i4i’s position on behalf of 261 businesses, research institutions, technology startup companies and organizations representing American innovation from all states and spanning all sectors.
    • BIO’s signatories express concern that a reversal of the lower court’s decision in i4i v Microsoft could seriously weaken the US Patent System, if Microsoft’s Supreme Court appeal is successful.