A jury in a US District Court in Tyler, Texas, has ordered Microsoft to pay $200 million to Canadian software firm i4i LP for willfully infringing on i4i’s electronic document processing patent.

i4i LP claims that Microsoft knew about i4i’s patent and willfully infringed it in Word 2007 and 2003. Those products use XML technology to encode and customize documents, and Microsoft’s customization of XML, i4i says, violates its patent.

Microsoft said it will appeal the verdict.