Two online gambling companies persuaded a federal judge to dismiss a rival betting platform’s patent infringement claims against the companies because the allegedly infringing technology isn’t patent-eligible.

The four patents at issue, owned by Game Play Network Inc., provide a system to show a user one form of gambling, such as a slot machine, while actually wagering a user’s bet on another form of gambling, such as horse racing. It’s often used to get around state rules that allow some types of betting but not others.

Game Play’s technology allows companies in the gaming industry to reach players across …