Finance

Thomson Reuters wins AI copyright 'fair use' ruling against one-time competitor

Published by Global Banking & Finance Review

Posted on February 11, 2025

2 min read

· Last updated: January 26, 2026

Add as preferred source on Google
Thomson Reuters logo with AI and copyright symbols - Global Banking & Finance Review
This image features the Thomson Reuters logo alongside symbols representing AI and copyright. It relates to the recent court ruling affirming Thomson Reuters' copyright protections against unauthorized use in AI development.
Global Banking & Finance Awards 2026 — Call for Entries

Thomson Reuters Secures AI Copyright Victory in Court Ruling

By Blake Brittain

(Reuters) - A federal judge in Delaware on Tuesday said that a former competitor of Thomson Reuters was not permitted by U.S. copyright law to copy the information and technology company's content to build a competing artificial intelligence-based legal platform.

U.S. Circuit Judge Stephanos Bibas' decision against defunct legal-research firm Ross Intelligence marks the first U.S. ruling on the closely watched question of fair use in AI-related copyright litigation.

Fair use is a principle that allows the unauthorized use of copyright-protected works under certain circumstances. The legal theory represents a key defense for tech companies including OpenAI, Microsoft and Meta Platforms in a series of copyright cases brought by authors, record labels, visual artists and others over the use of their material to train AI systems.

Tech companies argue that generative AI systems make fair use of copyrighted material by studying it to learn to create new content, while copyright owners say the companies use their work to generate competing content that threatens their livelihoods.

A Thomson Reuters spokesperson welcomed the decision. "We are pleased that the court granted summary judgment in our favor and concluded that Westlaw's editorial content, created and maintained by our attorney editors, is protected by copyright and cannot be used without our consent. The copying of our content was not 'fair use,'" the company said in a statement.

Thomson Reuters is the parent company of Reuters News.

Attorneys and spokespeople for Ross did not immediately respond to requests for comment.

Bibas reconsidered his previous decision that determining fair use should be left to a jury at a trial on Thomson Reuters' copyright infringement claims against Ross.

"I studied the case materials more closely and realized that my prior summary-judgment ruling had not gone far enough," Bibas said on Tuesday.

The judge determined that a jury should still consider the underlying case.

(Reporting by Blake Brittain in Washington; Editing by David Bario and Rosalba O'Brien)

Key Takeaways

  • Thomson Reuters wins AI copyright case against Ross Intelligence.
  • Judge Bibas ruled against fair use defense in AI copyright.
  • First U.S. ruling on AI-related copyright fair use.
  • Thomson Reuters' content protected by copyright law.
  • Decision impacts tech companies' use of copyrighted material.

Frequently Asked Questions

What is the main topic?
The article discusses Thomson Reuters' legal victory in an AI copyright fair use case against Ross Intelligence.
What was the court's decision?
The court ruled that Ross Intelligence's use of Thomson Reuters' content was not fair use under U.S. copyright law.
Why is this ruling significant?
This is the first U.S. ruling on AI-related copyright fair use, impacting how tech companies use copyrighted material.

Related Articles

More from Finance

Explore more articles in the Finance category