Litigation summary

Litigation History of U.S. Patent 8,700,996

U.S. Patent 8,700,996, assigned to Corel Software LLC, has been involved in litigation and post-grant proceedings at the Patent Trial and Appeal Board (PTAB).

District Court Litigation

• Case: Corel Software, LLC v. Microsoft Corporation
  • Plaintiff: Corel Software, LLC
  • Defendant: Microsoft Corporation
  • Jurisdiction: U.S. District Court for the District of Utah
  • Case Number: 2:15-cv-00528
  • Filing Date: July 27, 2015
  • Status/Outcome: This case involved allegations that Microsoft's "Live Preview" feature in its Office suite infringed on several Corel patents, including the '996 patent. The litigation was complex and intertwined with several PTAB proceedings. In August 2016, the district court case was stayed pending the outcome of inter partes reviews (IPRs) initiated by Microsoft. After the initial IPRs, the stay was lifted in June 2018. However, the case was stayed again after Corel sought to add two new claims from the '996 patent to the lawsuit. A subsequent court order in September 2025 granted a motion for summary judgment in favor of Microsoft, rendering other pending motions moot.

Patent Trial and Appeal Board (PTAB) Proceedings

Microsoft challenged the validity of the '996 patent through inter partes review (IPR) at the PTAB.

• Case: Microsoft Corporation v. Corel Software, LLC
  • PTAB Case Numbers: IPR2016-01085, IPR2016-01086
  • Filing Date: May 2016
  • Status/Outcome: The PTAB instituted an inter partes review of the '996 patent. In response, Corel canceled all of the asserted claims of the patent that were under review at that time. The case docket also indicates that Microsoft initiated an ex parte reexamination for the '996 patent in February 2019 (Application 90014266), which was noted as "Pending - Appeal" at that time. On June 28, 2019, a PTO examiner issued a first office action rejecting the two claims of the '996 patent that were in reexamination.