The jury agreed with Microsoft's claim that phone maker Motorola, owned by Google Inc, broke agreements with standard-setting bodies to license certain patents at a fair and reasonable rate, according to Microsoft.
The jury awarded Microsoft about $14 million in damages, Microsoft said, about half what the company had asked for. That consisted of $11 million for the costs of relocating a warehouse in Germany due to an injunction on certain Microsoft products brought by Motorola in that country, and about $3 million in legal fees for fighting that injunction.
"This is a landmark win for all who want products that are affordable and work well together," Microsoft said in a statement.
A Motorola spokesman indicated the company would appeal.
"We're disappointed in this outcome, but look forward to an appeal of the new legal issues raised in this case," said William Moss at Motorola. "In the meantime, we'll focus on building great products that people love."
The victory for Microsoft follows a decision in its favor in another, related Seattle trial last year in which the judge found that the appropriate rate for Motorola to license certain wireless and video technology used in the Xbox game console was only a fraction of what Motorola had asked for.
In that trial, U.S. District Judge James Robart said the appropriate rate was about $1.8 million, slightly above Microsoft's estimate, but well below Motorola's demand for as much as $4 billion a year.
In the latest trial, Microsoft argued that Motorola's initial demand was exorbitant and a clear breach of its agreement to charge reasonable and non-discriminatory terms - commonly referred to as 'RAND' - for technology that is an industry standard.
The long-running argument between Microsoft and Motorola - and by extension Google - is just one facet of a wide-ranging global patent war surrounding smartphone and internet technology that has drawn in Apple Inc, Samsung Electronics Co Ltd, Nokia and others.
At heart, the companies are arguing over who owns the technology and design features behind smartphones, which are now essentially small computers.
More particularly, Microsoft has been locked in a battle with Google to ensure that handset makers using Google's free Android phone operating system pay Microsoft a license fee. Most large handset makers, such as Samsung, LG and HTC, have agreed to pay Microsoft a royalty on Android handsets that Microsoft believes may infringe on its patents. Motorola, which was bought by Google last year for $12.5 billion, partly because of its trove of patents, is the last big holdout.
The case in U.S. District Court, Western District of Washington is Microsoft Corp. vs. Motorola Inc., 10-cv-1823.
© Thomson Reuters 2013