Epic Games Inc. has asserted that Apple Inc. is “overreaching” in its attempt to issue pretrial sanctions against the game developer for allegedly failing to disclose third-party witnesses from Microsoft, Facebook and a yoga app developer ahead of next month’s antitrust trial against the tech giant.

Apple claims that it is not able to conduct a fair cross examination of three third-party witnesses, because Epic did not disclose names of the witnesses until fact discovery had already ended, according to the motion for pretrial sanctions filed Friday.