A Nevada court has ruled in favour of Aristocrat Technologies, granting the company access to mathematical models from Light & Wonder's hold-and-spin slot games released since 2021.
The decision forms part of an ongoing intellectual property dispute between the two gaming suppliers.
The ruling allows Aristocrat to obtain discovery of game mathematics models created after former Aristocrat executive Emma Charles joined Light & Wonder in 2021. A previous motion to secure the same information had been denied earlier in the case.
In a statement following the hearing, Light & Wonder said it was "disappointed with the court's ruling" but reaffirmed confidence in its internal review.
The company stated: "We remain confident, based on the expert review we previously disclosed, that there is no evidence of Aristocrat math being used in any commercially released games other than Dragon Train and Jewel of the Dragon."
The ongoing lawsuit centres on claims that Light & Wonder used Aristocrat's mathematical frameworks in its slot designs, a form of intellectual property often protected as trade secrets within the gaming industry.
Fact discovery in the case is scheduled to conclude on 15 December 2025, followed by expert discovery, which will close on 16 March 2026. Both phases form part of the pre-trial evidence process in US litigation.
Earlier this month, Evolution was granted arbitration in its separate infringement case against Light & Wonder, concerning the alleged unauthorised use of game mechanics from Lightning Roulette.
Light & Wonder, which operates across both land-based and online gaming markets, continues to face scrutiny over its product development practices as regulatory and legal oversight of gaming IP intensifies.
The US discovery process allows parties in litigation to obtain relevant documents or data before trial, including proprietary materials such as software models or source code
