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Amazon.com spokesman: April 10, 2019 (Reuters).

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A federal jury in Illinois ruled on Wednesday that Amazon Web Services (AWS), the largest cloud service provider in the world, is liable for $525 million to tech company Kove, because it violated its patents regarding data storage technology.

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AWS violated Kove’s patents, which Kove claimed were “essential” for Amazon to be able to “store massive amounts of information.”

Amazon representatives did not respond immediately to requests for comments on the ruling. Courtland Reichman, Kove’s principal attorney, called the ruling “a testimony to the power and importance of IP rights protecting start-ups against tech giants.”

In 2018, Chicago-based Kove filed a lawsuit against Amazon at the U.S. District Court of the Northern District of Illinois. In the lawsuit, the company claimed that they pioneered high-performance cloud computing “years prior to the dawn of cloud technology.”

Kove claimed that AWS products such as Amazon S3 cloud storage, DynamoDB databases and DynamoDB’s database services infringed on the patents for cloud storage. On Wednesday, the jury found that AWS had infringed on all three patents that Kove was suing for. However, it did not agree with Kove that AWS had done so willfully.

AWS denied all the claims and claimed that the patents are invalid.

Kove has also filed a lawsuit against Google

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Last year, the company was sued in Illinois for the same patent infringements. The case is still ongoing.

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Blake Brittain reports from Washington, Christopher Cushing edits

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Blake Brittain is a reporter for Reuters Legal. He covers intellectual property laws, such as patents, trademarks copyrights, and trade secrets. He was an attorney and has written previously for Thomson Reuters Practical Law, Bloomberg Law.