<p>Apple Inc and Epic Games have listed their chief executive officers as potential witnesses in a case between the iPhone maker and the video game developer over the App Store payment system, court documents showed.</p>.<p>Apple and Epic Games, creator of the popular game Fortnite, have been in a legal battle since last year, when Epic Games tried to avoid a 30 per cent App Store fee by launching its own in-app payment system. The move prompted Apple to ban Fortnite from its store.</p>.<p>In addition to CEO Tim Cook, Apple also named software chief Craig Federighi and App Store Vice President Matt Fischer on a tentative list of witnesses submitted to the US District Court Northern District of California Oakland Division, a copy of which was seen by Reuters.</p>.<p>Epic Games listed its founder and CEO Tim Sweeney, its game store manager Steve Allison, and Thomas Ko, head of online business strategy, among its own witnesses for the trial.</p>.<p>"The chorus of developers speaking out against Apple and their anticompetitive practices has become louder," Epic Games said in a statement.</p>.<p>Apple did not respond to a Reuters request for comment, but told <em>Bloomberg </em>in a statement that it felt "confident the case will prove that Epic purposefully breached its agreement solely to increase its revenues."</p>
<p>Apple Inc and Epic Games have listed their chief executive officers as potential witnesses in a case between the iPhone maker and the video game developer over the App Store payment system, court documents showed.</p>.<p>Apple and Epic Games, creator of the popular game Fortnite, have been in a legal battle since last year, when Epic Games tried to avoid a 30 per cent App Store fee by launching its own in-app payment system. The move prompted Apple to ban Fortnite from its store.</p>.<p>In addition to CEO Tim Cook, Apple also named software chief Craig Federighi and App Store Vice President Matt Fischer on a tentative list of witnesses submitted to the US District Court Northern District of California Oakland Division, a copy of which was seen by Reuters.</p>.<p>Epic Games listed its founder and CEO Tim Sweeney, its game store manager Steve Allison, and Thomas Ko, head of online business strategy, among its own witnesses for the trial.</p>.<p>"The chorus of developers speaking out against Apple and their anticompetitive practices has become louder," Epic Games said in a statement.</p>.<p>Apple did not respond to a Reuters request for comment, but told <em>Bloomberg </em>in a statement that it felt "confident the case will prove that Epic purposefully breached its agreement solely to increase its revenues."</p>